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CVE-2024-36286 (GCVE-0-2024-36286)

Vulnerability from cvelistv5 – Published: 2024-06-21 10:18 – Updated: 2026-08-05 11:31
VLAI
Title
netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu() syzbot reported that nf_reinject() could be called without rcu_read_lock() : WARNING: suspicious RCU usage 6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0 Not tainted net/netfilter/nfnetlink_queue.c:263 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor.4/13427: #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2190 [inline] #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_core+0xa86/0x1830 kernel/rcu/tree.c:2471 #1: ffff88801ca92958 (&inst->lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline] #1: ffff88801ca92958 (&inst->lock){+.-.}-{2:2}, at: nfqnl_flush net/netfilter/nfnetlink_queue.c:405 [inline] #1: ffff88801ca92958 (&inst->lock){+.-.}-{2:2}, at: instance_destroy_rcu+0x30/0x220 net/netfilter/nfnetlink_queue.c:172 stack backtrace: CPU: 0 PID: 13427 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 lockdep_rcu_suspicious+0x221/0x340 kernel/locking/lockdep.c:6712 nf_reinject net/netfilter/nfnetlink_queue.c:323 [inline] nfqnl_reinject+0x6ec/0x1120 net/netfilter/nfnetlink_queue.c:397 nfqnl_flush net/netfilter/nfnetlink_queue.c:410 [inline] instance_destroy_rcu+0x1ae/0x220 net/netfilter/nfnetlink_queue.c:172 rcu_do_batch kernel/rcu/tree.c:2196 [inline] rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2471 handle_softirqs+0x2d6/0x990 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 </IRQ> <TASK>
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 17:09 UTC
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9872bec773c2e8503fec480c1e8a0c732517e257 , < 8658bd777cbfcb0c13df23d0ea120e70517761b9 (git)
Affected: 9872bec773c2e8503fec480c1e8a0c732517e257 , < 3989b817857f4890fab9379221a9d3f52bf5c256 (git)
Affected: 9872bec773c2e8503fec480c1e8a0c732517e257 , < e01065b339e323b3dfa1be217fd89e9b3208b0ab (git)
Affected: 9872bec773c2e8503fec480c1e8a0c732517e257 , < 25ea5377e3d2921a0f96ae2551f5ab1b36825dd4 (git)
Affected: 9872bec773c2e8503fec480c1e8a0c732517e257 , < 68f40354a3851df46c27be96b84f11ae193e36c5 (git)
Affected: 9872bec773c2e8503fec480c1e8a0c732517e257 , < 8f365564af898819a523f1a8cf5c6ce053e9f718 (git)
Affected: 9872bec773c2e8503fec480c1e8a0c732517e257 , < 215df6490e208bfdd5b3012f5075e7f8736f3e7a (git)
Affected: 9872bec773c2e8503fec480c1e8a0c732517e257 , < dc21c6cc3d6986d938efbf95de62473982c98dec (git)
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Linux Linux Affected: 2.6.25
Unaffected: 0 , < 2.6.25 (semver)
Unaffected: 4.19.316 , ≤ 4.19.* (semver)
Unaffected: 5.4.278 , ≤ 5.4.* (semver)
Unaffected: 5.10.219 , ≤ 5.10.* (semver)
Unaffected: 5.15.161 , ≤ 5.15.* (semver)
Unaffected: 6.1.93 , ≤ 6.1.* (semver)
Unaffected: 6.6.33 , ≤ 6.6.* (semver)
Unaffected: 6.9.4 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.1 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.1 (custom)
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()\n\nsyzbot reported that nf_reinject() could be called without rcu_read_lock() :\n\nWARNING: suspicious RCU usage\n6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0 Not tainted\n\nnet/netfilter/nfnetlink_queue.c:263 suspicious rcu_dereference_check() usage!\n\nother info that might help us debug this:\n\nrcu_scheduler_active = 2, debug_locks = 1\n2 locks held by syz-executor.4/13427:\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2190 [inline]\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_core+0xa86/0x1830 kernel/rcu/tree.c:2471\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: nfqnl_flush net/netfilter/nfnetlink_queue.c:405 [inline]\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: instance_destroy_rcu+0x30/0x220 net/netfilter/nfnetlink_queue.c:172\n\nstack backtrace:\nCPU: 0 PID: 13427 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\nCall Trace:\n \u003cIRQ\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\n  lockdep_rcu_suspicious+0x221/0x340 kernel/locking/lockdep.c:6712\n  nf_reinject net/netfilter/nfnetlink_queue.c:323 [inline]\n  nfqnl_reinject+0x6ec/0x1120 net/netfilter/nfnetlink_queue.c:397\n  nfqnl_flush net/netfilter/nfnetlink_queue.c:410 [inline]\n  instance_destroy_rcu+0x1ae/0x220 net/netfilter/nfnetlink_queue.c:172\n  rcu_do_batch kernel/rcu/tree.c:2196 [inline]\n  rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2471\n  handle_softirqs+0x2d6/0x990 kernel/softirq.c:554\n  __do_softirq kernel/softirq.c:588 [inline]\n  invoke_softirq kernel/softirq.c:428 [inline]\n  __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637\n  irq_exit_rcu+0x9/0x30 kernel/softirq.c:649\n  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]\n  sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043\n \u003c/IRQ\u003e\n \u003cTASK\u003e"
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            {
              "lang": "en",
              "value": "AV:L - The trigger is a local `NETLINK_NETFILTER` socket operation \u2014 an `NFQNL_CFG_CMD_UNBIND` message or simply closing the nfnetlink socket (`NETLINK_URELEASE` notifier) \u2014 which schedules the `instance_destroy_rcu()` callback. Although the queued entries originate from network packets, the vulnerable code path is entered only through a local netlink syscall.\nAC:L - The attacker deterministically controls both preconditions: they populate `queue_list` by binding an NFQUEUE and never issuing verdicts on their own self-generated traffic, then trigger the flush by closing the socket or sending UNBIND. No race must be won and no uncontrollable state is required \u2014 the RCU callback always executes `nfqnl_flush()` on a non-empty queue.\nPR:L - `nfnetlink_rcv()` gates on `netlink_net_capable(skb, CAP_NET_ADMIN)`, which resolves to `ns_capable()` against the netns\u0027s user_ns, so an unprivileged user obtains it via `unshare -Urn`; nftables/iptables NFQUEUE targets and loopback traffic are fully functional inside that namespace. No real root in the initial namespace is needed.\nUI:N - The attacker performs every step themselves \u2014 creating the namespace, binding the queue, generating the packets, and destroying the instance. No victim action or cooperation is involved.\nS:U - The unprotected dereference and its consequences are confined to the kernel\u0027s own security authority; there is no crossing of a VM, hypervisor, or IOMMU boundary. This is a standard in-kernel memory-safety issue.\nC:H - `nf_reinject()` performs `rcu_dereference()` on `net-\u003enf.hooks_*[hooknum]` with no RCU read-side protection, and `nf_hook_entries` objects are reclaimed via `call_rcu(\u0026head-\u003ehead, __nf_hook_entries_free)` \u2014 so the read can land on freed memory that an attacker can groom via heap spraying, disclosing kernel data and pointers through the subsequently read `num_hook_entries` and `hooks[]` array.\nI:H - A use-after-free of `struct nf_hook_entries` exposes an array of hook function pointers that `nf_reinject()` indexes as `\u0026hooks-\u003ehooks[i]` and invokes via `nf_hook_entry_hookfn()`/`nf_iterate()` on the REPEAT/ACCEPT paths, giving a realloc-and-control primitive suitable for control-flow hijack and privilege escalation.\nA:H - The reproducible syzbot outcome is a `WARNING: suspicious RCU usage` lockdep splat from softirq context, which panics outright on the many production and hardened deployments booted with `panic_on_warn=1`; a real hook-table use-after-free additionally causes oops or panic. Either way the result is a full kernel-level denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:31:43.632Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8658bd777cbfcb0c13df23d0ea120e70517761b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/3989b817857f4890fab9379221a9d3f52bf5c256"
        },
        {
          "url": "https://git.kernel.org/stable/c/e01065b339e323b3dfa1be217fd89e9b3208b0ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/25ea5377e3d2921a0f96ae2551f5ab1b36825dd4"
        },
        {
          "url": "https://git.kernel.org/stable/c/68f40354a3851df46c27be96b84f11ae193e36c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/8f365564af898819a523f1a8cf5c6ce053e9f718"
        },
        {
          "url": "https://git.kernel.org/stable/c/215df6490e208bfdd5b3012f5075e7f8736f3e7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc21c6cc3d6986d938efbf95de62473982c98dec"
        }
      ],
      "title": "netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-36286",
    "datePublished": "2024-06-21T10:18:08.364Z",
    "dateReserved": "2024-06-21T10:13:16.315Z",
    "dateUpdated": "2026-08-05T11:31:43.632Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-36286",
      "date": "2026-09-15",
      "epss": "0.00277",
      "percentile": "0.20137"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.25\", \"versionEndExcluding\": \"4.19.316\", \"matchCriteriaId\": \"AD24684C-C664-4564-A2BD-039A20739DC2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.278\", \"matchCriteriaId\": \"7FDBF235-DA18-49A1-8690-6C7272FD0701\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.219\", \"matchCriteriaId\": \"E9063AF3-D593-43B7-810D-58B87F82F9F9\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.161\", \"matchCriteriaId\": \"31130639-53FE-4726-8986-434EE2528CB2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.93\", \"matchCriteriaId\": \"EEFB78EE-F990-4197-BF1C-156760A55667\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.33\", \"matchCriteriaId\": \"FCE796DF-3B50-4DC6-BAE5-95271068FC9E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.9.4\", \"matchCriteriaId\": \"991B9791-966A-4D18-9E8D-A8AB128E5627\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()\\n\\nsyzbot reported that nf_reinject() could be called without rcu_read_lock() :\\n\\nWARNING: suspicious RCU usage\\n6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0 Not tainted\\n\\nnet/netfilter/nfnetlink_queue.c:263 suspicious rcu_dereference_check() usage!\\n\\nother info that might help us debug this:\\n\\nrcu_scheduler_active = 2, debug_locks = 1\\n2 locks held by syz-executor.4/13427:\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2190 [inline]\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_core+0xa86/0x1830 kernel/rcu/tree.c:2471\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: nfqnl_flush net/netfilter/nfnetlink_queue.c:405 [inline]\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: instance_destroy_rcu+0x30/0x220 net/netfilter/nfnetlink_queue.c:172\\n\\nstack backtrace:\\nCPU: 0 PID: 13427 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\\nCall Trace:\\n \u003cIRQ\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\\n  lockdep_rcu_suspicious+0x221/0x340 kernel/locking/lockdep.c:6712\\n  nf_reinject net/netfilter/nfnetlink_queue.c:323 [inline]\\n  nfqnl_reinject+0x6ec/0x1120 net/netfilter/nfnetlink_queue.c:397\\n  nfqnl_flush net/netfilter/nfnetlink_queue.c:410 [inline]\\n  instance_destroy_rcu+0x1ae/0x220 net/netfilter/nfnetlink_queue.c:172\\n  rcu_do_batch kernel/rcu/tree.c:2196 [inline]\\n  rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2471\\n  handle_softirqs+0x2d6/0x990 kernel/softirq.c:554\\n  __do_softirq kernel/softirq.c:588 [inline]\\n  invoke_softirq kernel/softirq.c:428 [inline]\\n  __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637\\n  irq_exit_rcu+0x9/0x30 kernel/softirq.c:649\\n  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]\\n  sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043\\n \u003c/IRQ\u003e\\n \u003cTASK\u003e\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: netfilter: nfnetlink_queue: adquirir rcu_read_lock() en instancia_destroy_rcu() syzbot inform\\u00f3 que se pod\\u00eda llamar a nf_reinject() sin rcu_read_lock() : ADVERTENCIA: uso sospechoso de RCU 6.9.0-rc7-syzkaller -02060-g5c1672705a1a #0 \\u00a1No est\\u00e1 contaminado net/netfilter/nfnetlink_queue.c:263 uso sospechoso de rcu_dereference_check()! otra informaci\\u00f3n que podr\\u00eda ayudarnos a depurar esto: rcu_scheduler_active = 2, debug_locks = 1 2 bloqueos mantenidos por syz-executor.4/13427: #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, en: rcu_lock_acquire include/linux/rcupdate.h:329 [en l\\u00ednea] #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, en: rcu_do_batch kernel/rcu/tree.c:2190 [en l\\u00ednea] #0 : ffffffff8e334f60 (rcu_callback){....}-{0:0}, en: rcu_core+0xa86/0x1830 kernel/rcu/tree.c:2471 #1: ffff88801ca92958 (\u0026amp;inst-\u0026gt;lock){+.-.} -{2:2}, en: spin_lock_bh include/linux/spinlock.h:356 [en l\\u00ednea] #1: ffff88801ca92958 (\u0026amp;inst-\u0026gt;lock){+.-.}-{2:2}, en: nfqnl_flush net/ netfilter/nfnetlink_queue.c:405 [en l\\u00ednea] #1: ffff88801ca92958 (\u0026amp;inst-\u0026gt;lock){+.-.}-{2:2}, en: instancia_destroy_rcu+0x30/0x220 net/netfilter/nfnetlink_queue.c:172 pila backtrace: CPU: 0 PID: 13427 Comm: syz-executor.4 No contaminado 6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Llamada de Google 02/04/2024 Trace:  __dump_stack lib/dump_stack.c: 88 [en l\\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c: 114 Lockdep_rcu_suspicious+0x221/0x340 kernel/locking/lockdep.c: 6712 nf_filt. C :323 [en l\\u00ednea] nfqnl_reinject+0x6ec/0x1120 net/netfilter/nfnetlink_queue.c:397 nfqnl_flush net/netfilter/nfnetlink_queue.c:410 [en l\\u00ednea] instancia_destroy_rcu+0x1ae/0x220 net/netfilter/nfnetlink_queue.c:172 do_batch kernel/rcu /tree.c:2196 [en l\\u00ednea] rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2471 handle_softirqs+0x2d6/0x990 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [en l\\u00ednea] invoke_softirq kernel/softirq .c:428 [en l\\u00ednea] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [en l\\u00ednea] r_interrupci\\u00f3n+ 0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043  \"}]",
      "id": "CVE-2024-36286",
      "lastModified": "2025-01-07T17:08:25.580",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-06-21T11:15:10.277",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/215df6490e208bfdd5b3012f5075e7f8736f3e7a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/25ea5377e3d2921a0f96ae2551f5ab1b36825dd4\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/3989b817857f4890fab9379221a9d3f52bf5c256\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/68f40354a3851df46c27be96b84f11ae193e36c5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8658bd777cbfcb0c13df23d0ea120e70517761b9\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8f365564af898819a523f1a8cf5c6ce053e9f718\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dc21c6cc3d6986d938efbf95de62473982c98dec\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/e01065b339e323b3dfa1be217fd89e9b3208b0ab\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/215df6490e208bfdd5b3012f5075e7f8736f3e7a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/25ea5377e3d2921a0f96ae2551f5ab1b36825dd4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/3989b817857f4890fab9379221a9d3f52bf5c256\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/68f40354a3851df46c27be96b84f11ae193e36c5\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8658bd777cbfcb0c13df23d0ea120e70517761b9\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8f365564af898819a523f1a8cf5c6ce053e9f718\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dc21c6cc3d6986d938efbf95de62473982c98dec\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/e01065b339e323b3dfa1be217fd89e9b3208b0ab\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-36286\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-21T11:15:10.277\",\"lastModified\":\"2026-08-04T11:18:24.780\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()\\n\\nsyzbot reported that nf_reinject() could be called without rcu_read_lock() :\\n\\nWARNING: suspicious RCU usage\\n6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0 Not tainted\\n\\nnet/netfilter/nfnetlink_queue.c:263 suspicious rcu_dereference_check() usage!\\n\\nother info that might help us debug this:\\n\\nrcu_scheduler_active = 2, debug_locks = 1\\n2 locks held by syz-executor.4/13427:\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2190 [inline]\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_core+0xa86/0x1830 kernel/rcu/tree.c:2471\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: nfqnl_flush net/netfilter/nfnetlink_queue.c:405 [inline]\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: instance_destroy_rcu+0x30/0x220 net/netfilter/nfnetlink_queue.c:172\\n\\nstack backtrace:\\nCPU: 0 PID: 13427 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\\nCall Trace:\\n \u003cIRQ\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\\n  lockdep_rcu_suspicious+0x221/0x340 kernel/locking/lockdep.c:6712\\n  nf_reinject net/netfilter/nfnetlink_queue.c:323 [inline]\\n  nfqnl_reinject+0x6ec/0x1120 net/netfilter/nfnetlink_queue.c:397\\n  nfqnl_flush net/netfilter/nfnetlink_queue.c:410 [inline]\\n  instance_destroy_rcu+0x1ae/0x220 net/netfilter/nfnetlink_queue.c:172\\n  rcu_do_batch kernel/rcu/tree.c:2196 [inline]\\n  rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2471\\n  handle_softirqs+0x2d6/0x990 kernel/softirq.c:554\\n  __do_softirq kernel/softirq.c:588 [inline]\\n  invoke_softirq kernel/softirq.c:428 [inline]\\n  __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637\\n  irq_exit_rcu+0x9/0x30 kernel/softirq.c:649\\n  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]\\n  sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043\\n \u003c/IRQ\u003e\\n \u003cTASK\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: nfnetlink_queue: adquirir rcu_read_lock() en instancia_destroy_rcu() syzbot inform\u00f3 que se pod\u00eda llamar a nf_reinject() sin rcu_read_lock() : ADVERTENCIA: uso sospechoso de RCU 6.9.0-rc7-syzkaller -02060-g5c1672705a1a #0 \u00a1No est\u00e1 contaminado net/netfilter/nfnetlink_queue.c:263 uso sospechoso de rcu_dereference_check()! otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto: rcu_scheduler_active = 2, debug_locks = 1 2 bloqueos mantenidos por syz-executor.4/13427: #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, en: rcu_lock_acquire include/linux/rcupdate.h:329 [en l\u00ednea] #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, en: rcu_do_batch kernel/rcu/tree.c:2190 [en l\u00ednea] #0 : ffffffff8e334f60 (rcu_callback){....}-{0:0}, en: rcu_core+0xa86/0x1830 kernel/rcu/tree.c:2471 #1: ffff88801ca92958 (\u0026amp;inst-\u0026gt;lock){+.-.} -{2:2}, en: spin_lock_bh include/linux/spinlock.h:356 [en l\u00ednea] #1: ffff88801ca92958 (\u0026amp;inst-\u0026gt;lock){+.-.}-{2:2}, en: nfqnl_flush net/ netfilter/nfnetlink_queue.c:405 [en l\u00ednea] #1: ffff88801ca92958 (\u0026amp;inst-\u0026gt;lock){+.-.}-{2:2}, en: instancia_destroy_rcu+0x30/0x220 net/netfilter/nfnetlink_queue.c:172 pila backtrace: CPU: 0 PID: 13427 Comm: syz-executor.4 No contaminado 6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Llamada de Google 02/04/2024 Trace:  __dump_stack lib/dump_stack.c: 88 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c: 114 Lockdep_rcu_suspicious+0x221/0x340 kernel/locking/lockdep.c: 6712 nf_filt. C :323 [en l\u00ednea] nfqnl_reinject+0x6ec/0x1120 net/netfilter/nfnetlink_queue.c:397 nfqnl_flush net/netfilter/nfnetlink_queue.c:410 [en l\u00ednea] instancia_destroy_rcu+0x1ae/0x220 net/netfilter/nfnetlink_queue.c:172 do_batch kernel/rcu /tree.c:2196 [en l\u00ednea] rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2471 handle_softirqs+0x2d6/0x990 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [en l\u00ednea] invoke_softirq kernel/softirq .c:428 [en l\u00ednea] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [en l\u00ednea] r_interrupci\u00f3n+ 0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043  \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/netfilter/nfnetlink_queue.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"9872bec773c2e8503fec480c1e8a0c732517e257\",\"lessThan\":\"8658bd777cbfcb0c13df23d0ea120e70517761b9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9872bec773c2e8503fec480c1e8a0c732517e257\",\"lessThan\":\"3989b817857f4890fab9379221a9d3f52bf5c256\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9872bec773c2e8503fec480c1e8a0c732517e257\",\"lessThan\":\"e01065b339e323b3dfa1be217fd89e9b3208b0ab\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9872bec773c2e8503fec480c1e8a0c732517e257\",\"lessThan\":\"25ea5377e3d2921a0f96ae2551f5ab1b36825dd4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9872bec773c2e8503fec480c1e8a0c732517e257\",\"lessThan\":\"68f40354a3851df46c27be96b84f11ae193e36c5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9872bec773c2e8503fec480c1e8a0c732517e257\",\"lessThan\":\"8f365564af898819a523f1a8cf5c6ce053e9f718\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9872bec773c2e8503fec480c1e8a0c732517e257\",\"lessThan\":\"215df6490e208bfdd5b3012f5075e7f8736f3e7a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9872bec773c2e8503fec480c1e8a0c732517e257\",\"lessThan\":\"dc21c6cc3d6986d938efbf95de62473982c98dec\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/netfilter/nfnetlink_queue.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.25\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.25\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.316\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.278\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.219\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.161\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.93\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.33\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9.4\",\"lessThanOrEqual\":\"6.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-13T08:27:35+00:00",
      "cve": "CVE-2024-36286",
      "id": "CVE-2024-36286",
      "initial_release_date": "2024-06-21T00:00:00+00:00",
      "product_status:fixed": "150",
      "product_status:known_affected": "122",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-36286.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-30T02:36:03Z",
      "cve": "CVE-2024-36286",
      "id": "CVE-2024-36286",
      "initial_release_date": "2024-06-22T03:36:53Z",
      "product_status:known_affected": "596",
      "product_status:recommended": "747",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-36286",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-36286.json",
      "version": "97"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8658bd777cbfcb0c13df23d0ea120e70517761b9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/3989b817857f4890fab9379221a9d3f52bf5c256\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/e01065b339e323b3dfa1be217fd89e9b3208b0ab\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/25ea5377e3d2921a0f96ae2551f5ab1b36825dd4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/68f40354a3851df46c27be96b84f11ae193e36c5\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/8f365564af898819a523f1a8cf5c6ce053e9f718\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/215df6490e208bfdd5b3012f5075e7f8736f3e7a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/dc21c6cc3d6986d938efbf95de62473982c98dec\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-04T17:21:08.764Z\"}}, {\"affected\": [{\"vendor\": \"Siemens\", \"product\": \"RUGGEDCOM RST2428P\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"V3.1\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"V3.1\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-398330.html\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-613116.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-05-12T11:53:47.639Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-36286\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:09:34.720987Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:25.716Z\"}}], \"cna\": {\"title\": \"netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The trigger is a local `NETLINK_NETFILTER` socket operation \\u2014 an `NFQNL_CFG_CMD_UNBIND` message or simply closing the nfnetlink socket (`NETLINK_URELEASE` notifier) \\u2014 which schedules the `instance_destroy_rcu()` callback. Although the queued entries originate from network packets, the vulnerable code path is entered only through a local netlink syscall.\\nAC:L - The attacker deterministically controls both preconditions: they populate `queue_list` by binding an NFQUEUE and never issuing verdicts on their own self-generated traffic, then trigger the flush by closing the socket or sending UNBIND. No race must be won and no uncontrollable state is required \\u2014 the RCU callback always executes `nfqnl_flush()` on a non-empty queue.\\nPR:L - `nfnetlink_rcv()` gates on `netlink_net_capable(skb, CAP_NET_ADMIN)`, which resolves to `ns_capable()` against the netns\u0027s user_ns, so an unprivileged user obtains it via `unshare -Urn`; nftables/iptables NFQUEUE targets and loopback traffic are fully functional inside that namespace. No real root in the initial namespace is needed.\\nUI:N - The attacker performs every step themselves \\u2014 creating the namespace, binding the queue, generating the packets, and destroying the instance. No victim action or cooperation is involved.\\nS:U - The unprotected dereference and its consequences are confined to the kernel\u0027s own security authority; there is no crossing of a VM, hypervisor, or IOMMU boundary. This is a standard in-kernel memory-safety issue.\\nC:H - `nf_reinject()` performs `rcu_dereference()` on `net-\u003enf.hooks_*[hooknum]` with no RCU read-side protection, and `nf_hook_entries` objects are reclaimed via `call_rcu(\u0026head-\u003ehead, __nf_hook_entries_free)` \\u2014 so the read can land on freed memory that an attacker can groom via heap spraying, disclosing kernel data and pointers through the subsequently read `num_hook_entries` and `hooks[]` array.\\nI:H - A use-after-free of `struct nf_hook_entries` exposes an array of hook function pointers that `nf_reinject()` indexes as `\u0026hooks-\u003ehooks[i]` and invokes via `nf_hook_entry_hookfn()`/`nf_iterate()` on the REPEAT/ACCEPT paths, giving a realloc-and-control primitive suitable for control-flow hijack and privilege escalation.\\nA:H - The reproducible syzbot outcome is a `WARNING: suspicious RCU usage` lockdep splat from softirq context, which panics outright on the many production and hardened deployments booted with `panic_on_warn=1`; a real hook-table use-after-free additionally causes oops or panic. Either way the result is a full kernel-level denial of service.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"9872bec773c2e8503fec480c1e8a0c732517e257\", \"lessThan\": \"8658bd777cbfcb0c13df23d0ea120e70517761b9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9872bec773c2e8503fec480c1e8a0c732517e257\", \"lessThan\": \"3989b817857f4890fab9379221a9d3f52bf5c256\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9872bec773c2e8503fec480c1e8a0c732517e257\", \"lessThan\": \"e01065b339e323b3dfa1be217fd89e9b3208b0ab\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9872bec773c2e8503fec480c1e8a0c732517e257\", \"lessThan\": \"25ea5377e3d2921a0f96ae2551f5ab1b36825dd4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9872bec773c2e8503fec480c1e8a0c732517e257\", \"lessThan\": \"68f40354a3851df46c27be96b84f11ae193e36c5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9872bec773c2e8503fec480c1e8a0c732517e257\", \"lessThan\": \"8f365564af898819a523f1a8cf5c6ce053e9f718\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9872bec773c2e8503fec480c1e8a0c732517e257\", \"lessThan\": \"215df6490e208bfdd5b3012f5075e7f8736f3e7a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9872bec773c2e8503fec480c1e8a0c732517e257\", \"lessThan\": \"dc21c6cc3d6986d938efbf95de62473982c98dec\", \"versionType\": \"git\"}], \"programFiles\": [\"net/netfilter/nfnetlink_queue.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.25\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.25\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.316\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.278\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.219\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.161\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.93\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/netfilter/nfnetlink_queue.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8658bd777cbfcb0c13df23d0ea120e70517761b9\"}, {\"url\": \"https://git.kernel.org/stable/c/3989b817857f4890fab9379221a9d3f52bf5c256\"}, {\"url\": \"https://git.kernel.org/stable/c/e01065b339e323b3dfa1be217fd89e9b3208b0ab\"}, {\"url\": \"https://git.kernel.org/stable/c/25ea5377e3d2921a0f96ae2551f5ab1b36825dd4\"}, {\"url\": \"https://git.kernel.org/stable/c/68f40354a3851df46c27be96b84f11ae193e36c5\"}, {\"url\": \"https://git.kernel.org/stable/c/8f365564af898819a523f1a8cf5c6ce053e9f718\"}, {\"url\": \"https://git.kernel.org/stable/c/215df6490e208bfdd5b3012f5075e7f8736f3e7a\"}, {\"url\": \"https://git.kernel.org/stable/c/dc21c6cc3d6986d938efbf95de62473982c98dec\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()\\n\\nsyzbot reported that nf_reinject() could be called without rcu_read_lock() :\\n\\nWARNING: suspicious RCU usage\\n6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0 Not tainted\\n\\nnet/netfilter/nfnetlink_queue.c:263 suspicious rcu_dereference_check() usage!\\n\\nother info that might help us debug this:\\n\\nrcu_scheduler_active = 2, debug_locks = 1\\n2 locks held by syz-executor.4/13427:\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2190 [inline]\\n  #0: ffffffff8e334f60 (rcu_callback){....}-{0:0}, at: rcu_core+0xa86/0x1830 kernel/rcu/tree.c:2471\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: nfqnl_flush net/netfilter/nfnetlink_queue.c:405 [inline]\\n  #1: ffff88801ca92958 (\u0026inst-\u003elock){+.-.}-{2:2}, at: instance_destroy_rcu+0x30/0x220 net/netfilter/nfnetlink_queue.c:172\\n\\nstack backtrace:\\nCPU: 0 PID: 13427 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-02060-g5c1672705a1a #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\\nCall Trace:\\n \u003cIRQ\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\\n  lockdep_rcu_suspicious+0x221/0x340 kernel/locking/lockdep.c:6712\\n  nf_reinject net/netfilter/nfnetlink_queue.c:323 [inline]\\n  nfqnl_reinject+0x6ec/0x1120 net/netfilter/nfnetlink_queue.c:397\\n  nfqnl_flush net/netfilter/nfnetlink_queue.c:410 [inline]\\n  instance_destroy_rcu+0x1ae/0x220 net/netfilter/nfnetlink_queue.c:172\\n  rcu_do_batch kernel/rcu/tree.c:2196 [inline]\\n  rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2471\\n  handle_softirqs+0x2d6/0x990 kernel/softirq.c:554\\n  __do_softirq kernel/softirq.c:588 [inline]\\n  invoke_softirq kernel/softirq.c:428 [inline]\\n  __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637\\n  irq_exit_rcu+0x9/0x30 kernel/softirq.c:649\\n  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]\\n  sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043\\n \u003c/IRQ\u003e\\n \u003cTASK\u003e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.316\", \"versionStartIncluding\": \"2.6.25\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.278\", \"versionStartIncluding\": \"2.6.25\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.219\", \"versionStartIncluding\": \"2.6.25\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.161\", \"versionStartIncluding\": \"2.6.25\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.93\", \"versionStartIncluding\": \"2.6.25\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.33\", \"versionStartIncluding\": \"2.6.25\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.4\", \"versionStartIncluding\": \"2.6.25\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"2.6.25\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:31:43.632Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-36286\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:31:43.632Z\", \"dateReserved\": \"2024-06-21T10:13:16.315Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-21T10:18:08.364Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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