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CVE-2024-42270 (GCVE-0-2024-42270)

Vulnerability from cvelistv5 – Published: 2024-08-17 08:54 – Updated: 2026-05-11 20:29
VLAI
Title
netfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init(). We had a report that iptables-restore sometimes triggered null-ptr-deref at boot time. [0] The problem is that iptable_nat_table_init() is exposed to user space before the kernel fully initialises netns. In the small race window, a user could call iptable_nat_table_init() that accesses net_generic(net, iptable_nat_net_id), which is available only after registering iptable_nat_net_ops. Let's call register_pernet_subsys() before xt_register_template(). [0]: bpfilter: Loaded bpfilter_umh pid 11702 Started bpfilter BUG: kernel NULL pointer dereference, address: 0000000000000013 PF: supervisor write access in kernel mode PF: error_code(0x0002) - not-present page PGD 0 P4D 0 PREEMPT SMP NOPTI CPU: 2 PID: 11879 Comm: iptables-restor Not tainted 6.1.92-99.174.amzn2023.x86_64 #1 Hardware name: Amazon EC2 c6i.4xlarge/, BIOS 1.0 10/16/2017 RIP: 0010:iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat Code: 10 4c 89 f6 48 89 ef e8 0b 19 bb ff 41 89 c4 85 c0 75 38 41 83 c7 01 49 83 c6 28 41 83 ff 04 75 dc 48 8b 44 24 08 48 8b 0c 24 <48> 89 08 4c 89 ef e8 a2 3b a2 cf 48 83 c4 10 44 89 e0 5b 5d 41 5c RSP: 0018:ffffbef902843cd0 EFLAGS: 00010246 RAX: 0000000000000013 RBX: ffff9f4b052caa20 RCX: ffff9f4b20988d80 RDX: 0000000000000000 RSI: 0000000000000064 RDI: ffffffffc04201c0 RBP: ffff9f4b29394000 R08: ffff9f4b07f77258 R09: ffff9f4b07f77240 R10: 0000000000000000 R11: ffff9f4b09635388 R12: 0000000000000000 R13: ffff9f4b1a3c6c00 R14: ffff9f4b20988e20 R15: 0000000000000004 FS: 00007f6284340000(0000) GS:ffff9f51fe280000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000013 CR3: 00000001d10a6005 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <TASK> ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259) ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259) ? xt_find_table_lock (net/netfilter/x_tables.c:1259) ? __die_body.cold (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420) ? page_fault_oops (arch/x86/mm/fault.c:727) ? exc_page_fault (./arch/x86/include/asm/irqflags.h:40 ./arch/x86/include/asm/irqflags.h:75 arch/x86/mm/fault.c:1470 arch/x86/mm/fault.c:1518) ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:570) ? iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat xt_find_table_lock (net/netfilter/x_tables.c:1259) xt_request_find_table_lock (net/netfilter/x_tables.c:1287) get_info (net/ipv4/netfilter/ip_tables.c:965) ? security_capable (security/security.c:809 (discriminator 13)) ? ns_capable (kernel/capability.c:376 kernel/capability.c:397) ? do_ipt_get_ctl (net/ipv4/netfilter/ip_tables.c:1656) ? bpfilter_send_req (net/bpfilter/bpfilter_kern.c:52) bpfilter nf_getsockopt (net/netfilter/nf_sockopt.c:116) ip_getsockopt (net/ipv4/ip_sockglue.c:1827) __sys_getsockopt (net/socket.c:2327) __x64_sys_getsockopt (net/socket.c:2342 net/socket.c:2339 net/socket.c:2339) do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:81) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) RIP: 0033:0x7f62844685ee Code: 48 8b 0d 45 28 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 09 RSP: 002b:00007ffd1f83d638 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffd1f83d680 RCX: 00007f62844685ee RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000004 R08: 00007ffd1f83d670 R09: 0000558798ffa2a0 R10: 00007ffd1f83d680 R11: 0000000000000246 R12: 00007ffd1f83e3b2 R13: 00007f6284 ---truncated---
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:12 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < b98ddb65fa1674b0e6b52de8af9103b63f51b643 (git)
Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < 95590a4929027769af35b153645c0ab6fd22b29b (git)
Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < 70014b73d7539fcbb6b4ff5f37368d7241d8e626 (git)
Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < 08ed888b69a22647153fe2bec55b7cd0a46102cc (git)
Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < 5830aa863981d43560748aa93589c0695191d95d (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.165 , ≤ 5.15.* (semver)
Unaffected: 6.1.104 , ≤ 6.1.* (semver)
Unaffected: 6.6.45 , ≤ 6.6.* (semver)
Unaffected: 6.10.4 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().\n\nWe had a report that iptables-restore sometimes triggered null-ptr-deref\nat boot time. [0]\n\nThe problem is that iptable_nat_table_init() is exposed to user space\nbefore the kernel fully initialises netns.\n\nIn the small race window, a user could call iptable_nat_table_init()\nthat accesses net_generic(net, iptable_nat_net_id), which is available\nonly after registering iptable_nat_net_ops.\n\nLet\u0027s call register_pernet_subsys() before xt_register_template().\n\n[0]:\nbpfilter: Loaded bpfilter_umh pid 11702\nStarted bpfilter\nBUG: kernel NULL pointer dereference, address: 0000000000000013\n PF: supervisor write access in kernel mode\n PF: error_code(0x0002) - not-present page\nPGD 0 P4D 0\nPREEMPT SMP NOPTI\nCPU: 2 PID: 11879 Comm: iptables-restor Not tainted 6.1.92-99.174.amzn2023.x86_64 #1\nHardware name: Amazon EC2 c6i.4xlarge/, BIOS 1.0 10/16/2017\nRIP: 0010:iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat\nCode: 10 4c 89 f6 48 89 ef e8 0b 19 bb ff 41 89 c4 85 c0 75 38 41 83 c7 01 49 83 c6 28 41 83 ff 04 75 dc 48 8b 44 24 08 48 8b 0c 24 \u003c48\u003e 89 08 4c 89 ef e8 a2 3b a2 cf 48 83 c4 10 44 89 e0 5b 5d 41 5c\nRSP: 0018:ffffbef902843cd0 EFLAGS: 00010246\nRAX: 0000000000000013 RBX: ffff9f4b052caa20 RCX: ffff9f4b20988d80\nRDX: 0000000000000000 RSI: 0000000000000064 RDI: ffffffffc04201c0\nRBP: ffff9f4b29394000 R08: ffff9f4b07f77258 R09: ffff9f4b07f77240\nR10: 0000000000000000 R11: ffff9f4b09635388 R12: 0000000000000000\nR13: ffff9f4b1a3c6c00 R14: ffff9f4b20988e20 R15: 0000000000000004\nFS:  00007f6284340000(0000) GS:ffff9f51fe280000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000013 CR3: 00000001d10a6005 CR4: 00000000007706e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n \u003cTASK\u003e\n ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)\n ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)\n ? xt_find_table_lock (net/netfilter/x_tables.c:1259)\n ? __die_body.cold (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420)\n ? page_fault_oops (arch/x86/mm/fault.c:727)\n ? exc_page_fault (./arch/x86/include/asm/irqflags.h:40 ./arch/x86/include/asm/irqflags.h:75 arch/x86/mm/fault.c:1470 arch/x86/mm/fault.c:1518)\n ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:570)\n ? iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat\n xt_find_table_lock (net/netfilter/x_tables.c:1259)\n xt_request_find_table_lock (net/netfilter/x_tables.c:1287)\n get_info (net/ipv4/netfilter/ip_tables.c:965)\n ? security_capable (security/security.c:809 (discriminator 13))\n ? ns_capable (kernel/capability.c:376 kernel/capability.c:397)\n ? do_ipt_get_ctl (net/ipv4/netfilter/ip_tables.c:1656)\n ? bpfilter_send_req (net/bpfilter/bpfilter_kern.c:52) bpfilter\n nf_getsockopt (net/netfilter/nf_sockopt.c:116)\n ip_getsockopt (net/ipv4/ip_sockglue.c:1827)\n __sys_getsockopt (net/socket.c:2327)\n __x64_sys_getsockopt (net/socket.c:2342 net/socket.c:2339 net/socket.c:2339)\n do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:81)\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\nRIP: 0033:0x7f62844685ee\nCode: 48 8b 0d 45 28 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 09\nRSP: 002b:00007ffd1f83d638 EFLAGS: 00000246 ORIG_RAX: 0000000000000037\nRAX: ffffffffffffffda RBX: 00007ffd1f83d680 RCX: 00007f62844685ee\nRDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004\nRBP: 0000000000000004 R08: 00007ffd1f83d670 R09: 0000558798ffa2a0\nR10: 00007ffd1f83d680 R11: 0000000000000246 R12: 00007ffd1f83e3b2\nR13: 00007f6284\n---truncated---"
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    "datePublished": "2024-08-17T08:54:25.178Z",
    "dateReserved": "2024-07-30T07:40:12.260Z",
    "dateUpdated": "2026-05-11T20:29:06.306Z",
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      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.15\", \"versionEndExcluding\": \"6.1.104\", \"matchCriteriaId\": \"47935D4A-35BC-4583-8B6B-49D49E8D999C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.45\", \"matchCriteriaId\": \"6ED8FBDF-48EE-4FEB-8B1A-CFF4FBCB27BF\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.10.4\", \"matchCriteriaId\": \"1F9FECDC-6CB8-41E5-B32A-E46776100D9C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"8B3CE743-2126-47A3-8B7C-822B502CF119\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().\\n\\nWe had a report that iptables-restore sometimes triggered null-ptr-deref\\nat boot time. [0]\\n\\nThe problem is that iptable_nat_table_init() is exposed to user space\\nbefore the kernel fully initialises netns.\\n\\nIn the small race window, a user could call iptable_nat_table_init()\\nthat accesses net_generic(net, iptable_nat_net_id), which is available\\nonly after registering iptable_nat_net_ops.\\n\\nLet\u0027s call register_pernet_subsys() before xt_register_template().\\n\\n[0]:\\nbpfilter: Loaded bpfilter_umh pid 11702\\nStarted bpfilter\\nBUG: kernel NULL pointer dereference, address: 0000000000000013\\n PF: supervisor write access in kernel mode\\n PF: error_code(0x0002) - not-present page\\nPGD 0 P4D 0\\nPREEMPT SMP NOPTI\\nCPU: 2 PID: 11879 Comm: iptables-restor Not tainted 6.1.92-99.174.amzn2023.x86_64 #1\\nHardware name: Amazon EC2 c6i.4xlarge/, BIOS 1.0 10/16/2017\\nRIP: 0010:iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat\\nCode: 10 4c 89 f6 48 89 ef e8 0b 19 bb ff 41 89 c4 85 c0 75 38 41 83 c7 01 49 83 c6 28 41 83 ff 04 75 dc 48 8b 44 24 08 48 8b 0c 24 \u003c48\u003e 89 08 4c 89 ef e8 a2 3b a2 cf 48 83 c4 10 44 89 e0 5b 5d 41 5c\\nRSP: 0018:ffffbef902843cd0 EFLAGS: 00010246\\nRAX: 0000000000000013 RBX: ffff9f4b052caa20 RCX: ffff9f4b20988d80\\nRDX: 0000000000000000 RSI: 0000000000000064 RDI: ffffffffc04201c0\\nRBP: ffff9f4b29394000 R08: ffff9f4b07f77258 R09: ffff9f4b07f77240\\nR10: 0000000000000000 R11: ffff9f4b09635388 R12: 0000000000000000\\nR13: ffff9f4b1a3c6c00 R14: ffff9f4b20988e20 R15: 0000000000000004\\nFS:  00007f6284340000(0000) GS:ffff9f51fe280000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000000000013 CR3: 00000001d10a6005 CR4: 00000000007706e0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n \u003cTASK\u003e\\n ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)\\n ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)\\n ? xt_find_table_lock (net/netfilter/x_tables.c:1259)\\n ? __die_body.cold (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420)\\n ? page_fault_oops (arch/x86/mm/fault.c:727)\\n ? exc_page_fault (./arch/x86/include/asm/irqflags.h:40 ./arch/x86/include/asm/irqflags.h:75 arch/x86/mm/fault.c:1470 arch/x86/mm/fault.c:1518)\\n ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:570)\\n ? iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat\\n xt_find_table_lock (net/netfilter/x_tables.c:1259)\\n xt_request_find_table_lock (net/netfilter/x_tables.c:1287)\\n get_info (net/ipv4/netfilter/ip_tables.c:965)\\n ? security_capable (security/security.c:809 (discriminator 13))\\n ? ns_capable (kernel/capability.c:376 kernel/capability.c:397)\\n ? do_ipt_get_ctl (net/ipv4/netfilter/ip_tables.c:1656)\\n ? bpfilter_send_req (net/bpfilter/bpfilter_kern.c:52) bpfilter\\n nf_getsockopt (net/netfilter/nf_sockopt.c:116)\\n ip_getsockopt (net/ipv4/ip_sockglue.c:1827)\\n __sys_getsockopt (net/socket.c:2327)\\n __x64_sys_getsockopt (net/socket.c:2342 net/socket.c:2339 net/socket.c:2339)\\n do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:81)\\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\\nRIP: 0033:0x7f62844685ee\\nCode: 48 8b 0d 45 28 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 09\\nRSP: 002b:00007ffd1f83d638 EFLAGS: 00000246 ORIG_RAX: 0000000000000037\\nRAX: ffffffffffffffda RBX: 00007ffd1f83d680 RCX: 00007f62844685ee\\nRDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004\\nRBP: 0000000000000004 R08: 00007ffd1f83d670 R09: 0000558798ffa2a0\\nR10: 00007ffd1f83d680 R11: 0000000000000246 R12: 00007ffd1f83e3b2\\nR13: 00007f6284\\n---truncated---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: netfilter: iptables: corrige null-ptr-deref en iptable_nat_table_init(). Recibimos un informe de que iptables-restore a veces activaba null-ptr-deref en el momento del arranque. [0] El problema es que iptable_nat_table_init() est\\u00e1 expuesto al espacio del usuario antes de que el kernel inicialice completamente netns. En la ventana de ejecuci\\u00f3n peque\\u00f1a, un usuario podr\\u00eda llamar a iptable_nat_table_init() que accede a net_generic(net, iptable_nat_net_id), que est\\u00e1 disponible solo despu\\u00e9s de registrar iptable_nat_net_ops. Llamemos a Register_pernet_subsys() antes de xt_register_template(). [0]: bpfilter: Bpfilter_umh pid 11702 iniciado bpfilter ERROR: desreferencia del puntero NULL del kernel, direcci\\u00f3n: 0000000000000013 PF: acceso de escritura del supervisor en modo kernel PF: error_code(0x0002) - p\\u00e1gina no presente PGD 0 P4D 0 PREEMPT SMP NOPTI CPU: 2 PID: 11879 Comm: iptables-restor No contaminado 6.1.92-99.174.amzn2023.x86_64 #1 Nombre del hardware: Amazon EC2 c6i.4xlarge/, BIOS 1.0 16/10/2017 RIP: 0010:iptable_nat_table_init (net/ipv4/netfilter /iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat C\\u00f3digo: 10 4c 89 f6 48 89 ef e8 0b 19 bb ff 41 89 c4 85 c0 75 38 41 83 c7 01 49 83 c6 28 41 83 ff 04 75 pa 48 8b 44 24 08 48 8b 0c 24 \u0026lt;48\u0026gt; 89 08 4c 89 ef e8 a2 3b a2 cf 48 83 c4 10 44 89 e0 5b 5d 41 5c RSP: 0018:ffffbef902843cd0 EFLAGS: 00010246 RAX: 0000000000000013RBX: ffff9f4b052caa20 RCX: ffff9f4b20988d80 RDX: 0000000000000000 RSI: 0000000000000064 RDI: ffffffffc04201c0 RBP: ffff9f4b29394000 R08: ffff9f4b07f77 258 R09: ffff9f4b07f77240 R10: 00000000000000000 R11: ffff9f4b09635388 R12: 0000000000000000 R13: ffff9f4b1a3c6c00 R14: ffff9f4b20988e20 : 0000000000000004 FS: 00007f6284340000(0000) GS:ffff9f51fe280000( 0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000013 CR3: 00000001d10a6005 CR4: 00000000007 706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000000000 DR6: 00000000ffe0ff0 DR7: 0000000000000400 PK RU: 55555554 Seguimiento de llamadas:  ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)? xt_find_table_lock (net/netfilter/x_tables.c:1259)? __die_body.cold (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420)? page_fault_oops (arch/x86/mm/fault.c:727)? exc_page_fault (./arch/x86/include/asm/irqflags.h:40 ./arch/x86/include/asm/irqflags.h:75 arch/x86/mm/fault.c:1470 arch/x86/mm/fault .c:1518)? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:570)? iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat xt_find_table_lock (net/netfilter/x_tables.c:1259) xt_request_find_table_lock (net/netfilter/x_tables.c:1287) get_info (net/ipv4/netfilter/ip_tables.c:965)? security_capable (seguridad/seguridad.c:809 (discriminador 13))? ns_capable (kernel/capability.c:376 kernel/capability.c:397)? do_ipt_get_ctl (net/ipv4/netfilter/ip_tables.c:1656)? bpfilter_send_req (net/bpfilter/bpfilter_kern.c:52) bpfilter nf_getsockopt (net/netfilter/nf_sockopt.c:116) ip_getsockopt (net/ipv4/ip_sockglue.c:1827) __sys_getsockopt (net/socket.c:2327) _sys_getsockopt (neto /socket.c:2342 net/socket.c:2339 net/socket.c:2339) do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:81) Entry_SYSCALL_64_after_hwframe (arch/ x86/entry/entry_64.S:121) RIP: 0033:0x7f62844685ee C\\u00f3digo: 48 8b 0d 45 28 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f 3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 09 RSP: 002b:00007ffd1f83d638 EFLAGS: 46 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffd1f83d680 RCX: 00007f62844685ee RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000000000004 R08: 00007ffd1f83d670 : 0000558798ffa2a0 R10: 00007ffd1f83d680 R11: 0000000000000246 R12: 00007ffd1f83e3b2 R13: 00007f6284 ---truncado---\"}]",
      "id": "CVE-2024-42270",
      "lastModified": "2024-08-19T20:01:09.520",
      "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": "2024-08-17T09:15:08.240",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/08ed888b69a22647153fe2bec55b7cd0a46102cc\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5830aa863981d43560748aa93589c0695191d95d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/70014b73d7539fcbb6b4ff5f37368d7241d8e626\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/95590a4929027769af35b153645c0ab6fd22b29b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b98ddb65fa1674b0e6b52de8af9103b63f51b643\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-476\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T14:43:29.000Z",
      "cve": "CVE-2024-42270",
      "id": "msrc_CVE-2024-42270",
      "initial_release_date": "2024-08-02T00:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "netfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-42270.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-42270\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-17T09:15:08.240\",\"lastModified\":\"2026-06-17T07:49:08.673\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().\\n\\nWe had a report that iptables-restore sometimes triggered null-ptr-deref\\nat boot time. [0]\\n\\nThe problem is that iptable_nat_table_init() is exposed to user space\\nbefore the kernel fully initialises netns.\\n\\nIn the small race window, a user could call iptable_nat_table_init()\\nthat accesses net_generic(net, iptable_nat_net_id), which is available\\nonly after registering iptable_nat_net_ops.\\n\\nLet\u0027s call register_pernet_subsys() before xt_register_template().\\n\\n[0]:\\nbpfilter: Loaded bpfilter_umh pid 11702\\nStarted bpfilter\\nBUG: kernel NULL pointer dereference, address: 0000000000000013\\n PF: supervisor write access in kernel mode\\n PF: error_code(0x0002) - not-present page\\nPGD 0 P4D 0\\nPREEMPT SMP NOPTI\\nCPU: 2 PID: 11879 Comm: iptables-restor Not tainted 6.1.92-99.174.amzn2023.x86_64 #1\\nHardware name: Amazon EC2 c6i.4xlarge/, BIOS 1.0 10/16/2017\\nRIP: 0010:iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat\\nCode: 10 4c 89 f6 48 89 ef e8 0b 19 bb ff 41 89 c4 85 c0 75 38 41 83 c7 01 49 83 c6 28 41 83 ff 04 75 dc 48 8b 44 24 08 48 8b 0c 24 \u003c48\u003e 89 08 4c 89 ef e8 a2 3b a2 cf 48 83 c4 10 44 89 e0 5b 5d 41 5c\\nRSP: 0018:ffffbef902843cd0 EFLAGS: 00010246\\nRAX: 0000000000000013 RBX: ffff9f4b052caa20 RCX: ffff9f4b20988d80\\nRDX: 0000000000000000 RSI: 0000000000000064 RDI: ffffffffc04201c0\\nRBP: ffff9f4b29394000 R08: ffff9f4b07f77258 R09: ffff9f4b07f77240\\nR10: 0000000000000000 R11: ffff9f4b09635388 R12: 0000000000000000\\nR13: ffff9f4b1a3c6c00 R14: ffff9f4b20988e20 R15: 0000000000000004\\nFS:  00007f6284340000(0000) GS:ffff9f51fe280000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000000000013 CR3: 00000001d10a6005 CR4: 00000000007706e0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n \u003cTASK\u003e\\n ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)\\n ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)\\n ? xt_find_table_lock (net/netfilter/x_tables.c:1259)\\n ? __die_body.cold (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420)\\n ? page_fault_oops (arch/x86/mm/fault.c:727)\\n ? exc_page_fault (./arch/x86/include/asm/irqflags.h:40 ./arch/x86/include/asm/irqflags.h:75 arch/x86/mm/fault.c:1470 arch/x86/mm/fault.c:1518)\\n ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:570)\\n ? iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat\\n xt_find_table_lock (net/netfilter/x_tables.c:1259)\\n xt_request_find_table_lock (net/netfilter/x_tables.c:1287)\\n get_info (net/ipv4/netfilter/ip_tables.c:965)\\n ? security_capable (security/security.c:809 (discriminator 13))\\n ? ns_capable (kernel/capability.c:376 kernel/capability.c:397)\\n ? do_ipt_get_ctl (net/ipv4/netfilter/ip_tables.c:1656)\\n ? bpfilter_send_req (net/bpfilter/bpfilter_kern.c:52) bpfilter\\n nf_getsockopt (net/netfilter/nf_sockopt.c:116)\\n ip_getsockopt (net/ipv4/ip_sockglue.c:1827)\\n __sys_getsockopt (net/socket.c:2327)\\n __x64_sys_getsockopt (net/socket.c:2342 net/socket.c:2339 net/socket.c:2339)\\n do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:81)\\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\\nRIP: 0033:0x7f62844685ee\\nCode: 48 8b 0d 45 28 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 09\\nRSP: 002b:00007ffd1f83d638 EFLAGS: 00000246 ORIG_RAX: 0000000000000037\\nRAX: ffffffffffffffda RBX: 00007ffd1f83d680 RCX: 00007f62844685ee\\nRDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004\\nRBP: 0000000000000004 R08: 00007ffd1f83d670 R09: 0000558798ffa2a0\\nR10: 00007ffd1f83d680 R11: 0000000000000246 R12: 00007ffd1f83e3b2\\nR13: 00007f6284\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: netfilter: iptables: corrige null-ptr-deref en iptable_nat_table_init(). Recibimos un informe de que iptables-restore a veces activaba null-ptr-deref en el momento del arranque. [0] El problema es que iptable_nat_table_init() est\u00e1 expuesto al espacio del usuario antes de que el kernel inicialice completamente netns. En la ventana de ejecuci\u00f3n peque\u00f1a, un usuario podr\u00eda llamar a iptable_nat_table_init() que accede a net_generic(net, iptable_nat_net_id), que est\u00e1 disponible solo despu\u00e9s de registrar iptable_nat_net_ops. Llamemos a Register_pernet_subsys() antes de xt_register_template(). [0]: bpfilter: Bpfilter_umh pid 11702 iniciado bpfilter ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000013 PF: acceso de escritura del supervisor en modo kernel PF: error_code(0x0002) - p\u00e1gina no presente PGD 0 P4D 0 PREEMPT SMP NOPTI CPU: 2 PID: 11879 Comm: iptables-restor No contaminado 6.1.92-99.174.amzn2023.x86_64 #1 Nombre del hardware: Amazon EC2 c6i.4xlarge/, BIOS 1.0 16/10/2017 RIP: 0010:iptable_nat_table_init (net/ipv4/netfilter /iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat C\u00f3digo: 10 4c 89 f6 48 89 ef e8 0b 19 bb ff 41 89 c4 85 c0 75 38 41 83 c7 01 49 83 c6 28 41 83 ff 04 75 pa 48 8b 44 24 08 48 8b 0c 24 \u0026lt;48\u0026gt; 89 08 4c 89 ef e8 a2 3b a2 cf 48 83 c4 10 44 89 e0 5b 5d 41 5c RSP: 0018:ffffbef902843cd0 EFLAGS: 00010246 RAX: 0000000000000013RBX: ffff9f4b052caa20 RCX: ffff9f4b20988d80 RDX: 0000000000000000 RSI: 0000000000000064 RDI: ffffffffc04201c0 RBP: ffff9f4b29394000 R08: ffff9f4b07f77 258 R09: ffff9f4b07f77240 R10: 00000000000000000 R11: ffff9f4b09635388 R12: 0000000000000000 R13: ffff9f4b1a3c6c00 R14: ffff9f4b20988e20 : 0000000000000004 FS: 00007f6284340000(0000) GS:ffff9f51fe280000( 0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000013 CR3: 00000001d10a6005 CR4: 00000000007 706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000000000 DR6: 00000000ffe0ff0 DR7: 0000000000000400 PK RU: 55555554 Seguimiento de llamadas:  ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)? xt_find_table_lock (net/netfilter/x_tables.c:1259)? __die_body.cold (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420)? page_fault_oops (arch/x86/mm/fault.c:727)? exc_page_fault (./arch/x86/include/asm/irqflags.h:40 ./arch/x86/include/asm/irqflags.h:75 arch/x86/mm/fault.c:1470 arch/x86/mm/fault .c:1518)? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:570)? iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat xt_find_table_lock (net/netfilter/x_tables.c:1259) xt_request_find_table_lock (net/netfilter/x_tables.c:1287) get_info (net/ipv4/netfilter/ip_tables.c:965)? security_capable (seguridad/seguridad.c:809 (discriminador 13))? ns_capable (kernel/capability.c:376 kernel/capability.c:397)? do_ipt_get_ctl (net/ipv4/netfilter/ip_tables.c:1656)? bpfilter_send_req (net/bpfilter/bpfilter_kern.c:52) bpfilter nf_getsockopt (net/netfilter/nf_sockopt.c:116) ip_getsockopt (net/ipv4/ip_sockglue.c:1827) __sys_getsockopt (net/socket.c:2327) _sys_getsockopt (neto /socket.c:2342 net/socket.c:2339 net/socket.c:2339) do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:81) Entry_SYSCALL_64_after_hwframe (arch/ x86/entry/entry_64.S:121) RIP: 0033:0x7f62844685ee C\u00f3digo: 48 8b 0d 45 28 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f 3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 09 RSP: 002b:00007ffd1f83d638 EFLAGS: 46 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffd1f83d680 RCX: 00007f62844685ee RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000000000004 R08: 00007ffd1f83d670 : 0000558798ffa2a0 R10: 00007ffd1f83d680 R11: 0000000000000246 R12: 00007ffd1f83e3b2 R13: 00007f6284 ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ipv4/netfilter/iptable_nat.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\",\"lessThan\":\"b98ddb65fa1674b0e6b52de8af9103b63f51b643\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\",\"lessThan\":\"95590a4929027769af35b153645c0ab6fd22b29b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\",\"lessThan\":\"70014b73d7539fcbb6b4ff5f37368d7241d8e626\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\",\"lessThan\":\"08ed888b69a22647153fe2bec55b7cd0a46102cc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\",\"lessThan\":\"5830aa863981d43560748aa93589c0695191d95d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ipv4/netfilter/iptable_nat.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.165\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.104\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.45\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10.4\",\"lessThanOrEqual\":\"6.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-10T16:12:14.793502Z\",\"id\":\"CVE-2024-42270\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15\",\"versionEndExcluding\":\"6.1.104\",\"matchCriteriaId\":\"47935D4A-35BC-4583-8B6B-49D49E8D999C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.45\",\"matchCriteriaId\":\"6ED8FBDF-48EE-4FEB-8B1A-CFF4FBCB27BF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.4\",\"matchCriteriaId\":\"1F9FECDC-6CB8-41E5-B32A-E46776100D9C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/08ed888b69a22647153fe2bec55b7cd0a46102cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5830aa863981d43560748aa93589c0695191d95d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/70014b73d7539fcbb6b4ff5f37368d7241d8e626\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/95590a4929027769af35b153645c0ab6fd22b29b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b98ddb65fa1674b0e6b52de8af9103b63f51b643\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:37:54+00:00",
      "cve": "CVE-2024-42270",
      "id": "CVE-2024-42270",
      "initial_release_date": "2024-08-17T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "156",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-42270.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-30T02:28:15Z",
      "cve": "CVE-2024-42270",
      "id": "CVE-2024-42270",
      "initial_release_date": "2024-08-18T02:02:51Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "348",
      "product_status:recommended": "355",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-42270",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-42270.json",
      "version": "62"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:03:05.637Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-42270\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T16:12:14.793502Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:23.907Z\"}}], \"cna\": {\"title\": \"netfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\", \"lessThan\": \"b98ddb65fa1674b0e6b52de8af9103b63f51b643\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\", \"lessThan\": \"95590a4929027769af35b153645c0ab6fd22b29b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\", \"lessThan\": \"70014b73d7539fcbb6b4ff5f37368d7241d8e626\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\", \"lessThan\": \"08ed888b69a22647153fe2bec55b7cd0a46102cc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdacd57c79b79a03c7ca88f706ad9fb7b46831c1\", \"lessThan\": \"5830aa863981d43560748aa93589c0695191d95d\", \"versionType\": \"git\"}], \"programFiles\": [\"net/ipv4/netfilter/iptable_nat.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.165\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.104\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.45\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ipv4/netfilter/iptable_nat.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b98ddb65fa1674b0e6b52de8af9103b63f51b643\"}, {\"url\": \"https://git.kernel.org/stable/c/95590a4929027769af35b153645c0ab6fd22b29b\"}, {\"url\": \"https://git.kernel.org/stable/c/70014b73d7539fcbb6b4ff5f37368d7241d8e626\"}, {\"url\": \"https://git.kernel.org/stable/c/08ed888b69a22647153fe2bec55b7cd0a46102cc\"}, {\"url\": \"https://git.kernel.org/stable/c/5830aa863981d43560748aa93589c0695191d95d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().\\n\\nWe had a report that iptables-restore sometimes triggered null-ptr-deref\\nat boot time. [0]\\n\\nThe problem is that iptable_nat_table_init() is exposed to user space\\nbefore the kernel fully initialises netns.\\n\\nIn the small race window, a user could call iptable_nat_table_init()\\nthat accesses net_generic(net, iptable_nat_net_id), which is available\\nonly after registering iptable_nat_net_ops.\\n\\nLet\u0027s call register_pernet_subsys() before xt_register_template().\\n\\n[0]:\\nbpfilter: Loaded bpfilter_umh pid 11702\\nStarted bpfilter\\nBUG: kernel NULL pointer dereference, address: 0000000000000013\\n PF: supervisor write access in kernel mode\\n PF: error_code(0x0002) - not-present page\\nPGD 0 P4D 0\\nPREEMPT SMP NOPTI\\nCPU: 2 PID: 11879 Comm: iptables-restor Not tainted 6.1.92-99.174.amzn2023.x86_64 #1\\nHardware name: Amazon EC2 c6i.4xlarge/, BIOS 1.0 10/16/2017\\nRIP: 0010:iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat\\nCode: 10 4c 89 f6 48 89 ef e8 0b 19 bb ff 41 89 c4 85 c0 75 38 41 83 c7 01 49 83 c6 28 41 83 ff 04 75 dc 48 8b 44 24 08 48 8b 0c 24 \u003c48\u003e 89 08 4c 89 ef e8 a2 3b a2 cf 48 83 c4 10 44 89 e0 5b 5d 41 5c\\nRSP: 0018:ffffbef902843cd0 EFLAGS: 00010246\\nRAX: 0000000000000013 RBX: ffff9f4b052caa20 RCX: ffff9f4b20988d80\\nRDX: 0000000000000000 RSI: 0000000000000064 RDI: ffffffffc04201c0\\nRBP: ffff9f4b29394000 R08: ffff9f4b07f77258 R09: ffff9f4b07f77240\\nR10: 0000000000000000 R11: ffff9f4b09635388 R12: 0000000000000000\\nR13: ffff9f4b1a3c6c00 R14: ffff9f4b20988e20 R15: 0000000000000004\\nFS:  00007f6284340000(0000) GS:ffff9f51fe280000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000000000013 CR3: 00000001d10a6005 CR4: 00000000007706e0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n \u003cTASK\u003e\\n ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)\\n ? show_trace_log_lvl (arch/x86/kernel/dumpstack.c:259)\\n ? xt_find_table_lock (net/netfilter/x_tables.c:1259)\\n ? __die_body.cold (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420)\\n ? page_fault_oops (arch/x86/mm/fault.c:727)\\n ? exc_page_fault (./arch/x86/include/asm/irqflags.h:40 ./arch/x86/include/asm/irqflags.h:75 arch/x86/mm/fault.c:1470 arch/x86/mm/fault.c:1518)\\n ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:570)\\n ? iptable_nat_table_init (net/ipv4/netfilter/iptable_nat.c:87 net/ipv4/netfilter/iptable_nat.c:121) iptable_nat\\n xt_find_table_lock (net/netfilter/x_tables.c:1259)\\n xt_request_find_table_lock (net/netfilter/x_tables.c:1287)\\n get_info (net/ipv4/netfilter/ip_tables.c:965)\\n ? security_capable (security/security.c:809 (discriminator 13))\\n ? ns_capable (kernel/capability.c:376 kernel/capability.c:397)\\n ? do_ipt_get_ctl (net/ipv4/netfilter/ip_tables.c:1656)\\n ? bpfilter_send_req (net/bpfilter/bpfilter_kern.c:52) bpfilter\\n nf_getsockopt (net/netfilter/nf_sockopt.c:116)\\n ip_getsockopt (net/ipv4/ip_sockglue.c:1827)\\n __sys_getsockopt (net/socket.c:2327)\\n __x64_sys_getsockopt (net/socket.c:2342 net/socket.c:2339 net/socket.c:2339)\\n do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:81)\\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\\nRIP: 0033:0x7f62844685ee\\nCode: 48 8b 0d 45 28 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 09\\nRSP: 002b:00007ffd1f83d638 EFLAGS: 00000246 ORIG_RAX: 0000000000000037\\nRAX: ffffffffffffffda RBX: 00007ffd1f83d680 RCX: 00007f62844685ee\\nRDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004\\nRBP: 0000000000000004 R08: 00007ffd1f83d670 R09: 0000558798ffa2a0\\nR10: 00007ffd1f83d680 R11: 0000000000000246 R12: 00007ffd1f83e3b2\\nR13: 00007f6284\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.165\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.104\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.45\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.4\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"5.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:25:36.552Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-42270\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T22:03:05.637Z\", \"dateReserved\": \"2024-07-30T07:40:12.260Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-17T08:54:25.178Z\", \"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

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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.


Detection rules are retrieved from Rulezet.


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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.