CVE-2024-50126 (GCVE-0-2024-50126)
Vulnerability from cvelistv5 – Published: 2024-11-05 17:10 – Updated: 2026-08-05 11:41
VLAI
EPSS
VEX
Title
net: sched: use RCU read-side critical section in taprio_dump()
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: sched: use RCU read-side critical section in taprio_dump()
Fix possible use-after-free in 'taprio_dump()' by adding RCU
read-side critical section there. Never seen on x86 but
found on a KASAN-enabled arm64 system when investigating
https://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa:
[T15862] BUG: KASAN: slab-use-after-free in taprio_dump+0xa0c/0xbb0
[T15862] Read of size 4 at addr ffff0000d4bb88f8 by task repro/15862
[T15862]
[T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro Not tainted 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2
[T15862] Hardware name: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 05/24/2024
[T15862] Call trace:
[T15862] dump_backtrace+0x20c/0x220
[T15862] show_stack+0x2c/0x40
[T15862] dump_stack_lvl+0xf8/0x174
[T15862] print_report+0x170/0x4d8
[T15862] kasan_report+0xb8/0x1d4
[T15862] __asan_report_load4_noabort+0x20/0x2c
[T15862] taprio_dump+0xa0c/0xbb0
[T15862] tc_fill_qdisc+0x540/0x1020
[T15862] qdisc_notify.isra.0+0x330/0x3a0
[T15862] tc_modify_qdisc+0x7b8/0x1838
[T15862] rtnetlink_rcv_msg+0x3c8/0xc20
[T15862] netlink_rcv_skb+0x1f8/0x3d4
[T15862] rtnetlink_rcv+0x28/0x40
[T15862] netlink_unicast+0x51c/0x790
[T15862] netlink_sendmsg+0x79c/0xc20
[T15862] __sock_sendmsg+0xe0/0x1a0
[T15862] ____sys_sendmsg+0x6c0/0x840
[T15862] ___sys_sendmsg+0x1ac/0x1f0
[T15862] __sys_sendmsg+0x110/0x1d0
[T15862] __arm64_sys_sendmsg+0x74/0xb0
[T15862] invoke_syscall+0x88/0x2e0
[T15862] el0_svc_common.constprop.0+0xe4/0x2a0
[T15862] do_el0_svc+0x44/0x60
[T15862] el0_svc+0x50/0x184
[T15862] el0t_64_sync_handler+0x120/0x12c
[T15862] el0t_64_sync+0x190/0x194
[T15862]
[T15862] Allocated by task 15857:
[T15862] kasan_save_stack+0x3c/0x70
[T15862] kasan_save_track+0x20/0x3c
[T15862] kasan_save_alloc_info+0x40/0x60
[T15862] __kasan_kmalloc+0xd4/0xe0
[T15862] __kmalloc_cache_noprof+0x194/0x334
[T15862] taprio_change+0x45c/0x2fe0
[T15862] tc_modify_qdisc+0x6a8/0x1838
[T15862] rtnetlink_rcv_msg+0x3c8/0xc20
[T15862] netlink_rcv_skb+0x1f8/0x3d4
[T15862] rtnetlink_rcv+0x28/0x40
[T15862] netlink_unicast+0x51c/0x790
[T15862] netlink_sendmsg+0x79c/0xc20
[T15862] __sock_sendmsg+0xe0/0x1a0
[T15862] ____sys_sendmsg+0x6c0/0x840
[T15862] ___sys_sendmsg+0x1ac/0x1f0
[T15862] __sys_sendmsg+0x110/0x1d0
[T15862] __arm64_sys_sendmsg+0x74/0xb0
[T15862] invoke_syscall+0x88/0x2e0
[T15862] el0_svc_common.constprop.0+0xe4/0x2a0
[T15862] do_el0_svc+0x44/0x60
[T15862] el0_svc+0x50/0x184
[T15862] el0t_64_sync_handler+0x120/0x12c
[T15862] el0t_64_sync+0x190/0x194
[T15862]
[T15862] Freed by task 6192:
[T15862] kasan_save_stack+0x3c/0x70
[T15862] kasan_save_track+0x20/0x3c
[T15862] kasan_save_free_info+0x4c/0x80
[T15862] poison_slab_object+0x110/0x160
[T15862] __kasan_slab_free+0x3c/0x74
[T15862] kfree+0x134/0x3c0
[T15862] taprio_free_sched_cb+0x18c/0x220
[T15862] rcu_core+0x920/0x1b7c
[T15862] rcu_core_si+0x10/0x1c
[T15862] handle_softirqs+0x2e8/0xd64
[T15862] __do_softirq+0x14/0x20
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:28 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
18cdd2f0998a4967b1fff4c43ed9aef049e42c39 , < b911fa9e92ee586e36479ad57b88f20471acaca1
(git)
Affected: 18cdd2f0998a4967b1fff4c43ed9aef049e42c39 , < 5d282467245f267c0b9ada3f7f309ff838521536 (git) Affected: 18cdd2f0998a4967b1fff4c43ed9aef049e42c39 , < e4369cb6acf6b895ac2453cc1cdf2f4326122c6d (git) Affected: 18cdd2f0998a4967b1fff4c43ed9aef049e42c39 , < b22db8b8befe90b61c98626ca1a2fbb0505e9fe3 (git) |
guessed | |
| Linux | Linux |
Affected:
6.1
Unaffected: 0 , < 6.1 (semver) Unaffected: 6.1.117 , ≤ 6.1.* (semver) Unaffected: 6.6.59 , ≤ 6.6.* (semver) Unaffected: 6.11.6 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
guessed |
{
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"status": "unaffected",
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: use RCU read-side critical section in taprio_dump()\n\nFix possible use-after-free in \u0027taprio_dump()\u0027 by adding RCU\nread-side critical section there. Never seen on x86 but\nfound on a KASAN-enabled arm64 system when investigating\nhttps://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa:\n\n[T15862] BUG: KASAN: slab-use-after-free in taprio_dump+0xa0c/0xbb0\n[T15862] Read of size 4 at addr ffff0000d4bb88f8 by task repro/15862\n[T15862]\n[T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro Not tainted 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2\n[T15862] Hardware name: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 05/24/2024\n[T15862] Call trace:\n[T15862] dump_backtrace+0x20c/0x220\n[T15862] show_stack+0x2c/0x40\n[T15862] dump_stack_lvl+0xf8/0x174\n[T15862] print_report+0x170/0x4d8\n[T15862] kasan_report+0xb8/0x1d4\n[T15862] __asan_report_load4_noabort+0x20/0x2c\n[T15862] taprio_dump+0xa0c/0xbb0\n[T15862] tc_fill_qdisc+0x540/0x1020\n[T15862] qdisc_notify.isra.0+0x330/0x3a0\n[T15862] tc_modify_qdisc+0x7b8/0x1838\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\n[T15862] rtnetlink_rcv+0x28/0x40\n[T15862] netlink_unicast+0x51c/0x790\n[T15862] netlink_sendmsg+0x79c/0xc20\n[T15862] __sock_sendmsg+0xe0/0x1a0\n[T15862] ____sys_sendmsg+0x6c0/0x840\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\n[T15862] __sys_sendmsg+0x110/0x1d0\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\n[T15862] invoke_syscall+0x88/0x2e0\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\n[T15862] do_el0_svc+0x44/0x60\n[T15862] el0_svc+0x50/0x184\n[T15862] el0t_64_sync_handler+0x120/0x12c\n[T15862] el0t_64_sync+0x190/0x194\n[T15862]\n[T15862] Allocated by task 15857:\n[T15862] kasan_save_stack+0x3c/0x70\n[T15862] kasan_save_track+0x20/0x3c\n[T15862] kasan_save_alloc_info+0x40/0x60\n[T15862] __kasan_kmalloc+0xd4/0xe0\n[T15862] __kmalloc_cache_noprof+0x194/0x334\n[T15862] taprio_change+0x45c/0x2fe0\n[T15862] tc_modify_qdisc+0x6a8/0x1838\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\n[T15862] rtnetlink_rcv+0x28/0x40\n[T15862] netlink_unicast+0x51c/0x790\n[T15862] netlink_sendmsg+0x79c/0xc20\n[T15862] __sock_sendmsg+0xe0/0x1a0\n[T15862] ____sys_sendmsg+0x6c0/0x840\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\n[T15862] __sys_sendmsg+0x110/0x1d0\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\n[T15862] invoke_syscall+0x88/0x2e0\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\n[T15862] do_el0_svc+0x44/0x60\n[T15862] el0_svc+0x50/0x184\n[T15862] el0t_64_sync_handler+0x120/0x12c\n[T15862] el0t_64_sync+0x190/0x194\n[T15862]\n[T15862] Freed by task 6192:\n[T15862] kasan_save_stack+0x3c/0x70\n[T15862] kasan_save_track+0x20/0x3c\n[T15862] kasan_save_free_info+0x4c/0x80\n[T15862] poison_slab_object+0x110/0x160\n[T15862] __kasan_slab_free+0x3c/0x74\n[T15862] kfree+0x134/0x3c0\n[T15862] taprio_free_sched_cb+0x18c/0x220\n[T15862] rcu_core+0x920/0x1b7c\n[T15862] rcu_core_si+0x10/0x1c\n[T15862] handle_softirqs+0x2e8/0xd64\n[T15862] __do_softirq+0x14/0x20"
}
],
"metrics": [
{
"cvssV3_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",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerable `taprio_dump()` is reached only through rtnetlink socket messages (RTM_GETQDISC/RTM_NEWQDISC) issued via sendmsg() by a local process, matching the tc/netlink qdisc = Local classification.\nAC:L - The attacker drives both sides of the race \u2014 one thread loops `tc qdisc show` while another loops taprio_change() (which call_rcu()s the replaced schedule), and the attacker picks a huge entry list plus a microsecond cycle_time to widen the dump window and make advance_sched() fire continuously.\nPR:L - The dump side (RTM_GETQDISC) requires no capability at all since rtnetlink_rcv_msg() skips the CAP_NET_ADMIN check for RTNL_KIND_GET, and installing the taprio qdisc needs only CAP_NET_ADMIN in a namespace obtainable by any unprivileged user via `unshare -Urn`.\nUI:N - The attacker triggers the entire sequence \u2014 qdisc creation, schedule replacement, and dump \u2014 from their own processes with no victim action required.\nS:U - The use-after-free occurs in kernel slab memory and its impact stays within the kernel\u0027s own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - Freed `sched_gate_list`/`sched_entry` bytes (base_time, cycle_time, max_sdu[], and per-entry index/command/gate_mask/interval) are copied verbatim into the netlink reply, so after heap reallocation the attacker reads back arbitrary kernel heap contents, and a controlled `entries` list head turns the traversal into a targeted read primitive.\nI:H - This is a slab use-after-free on an object the attacker can reclaim and control via heap spraying, and the resulting corrupted list traversal is the classic building block for escalating to control-flow hijack rather than a bounded read.\nA:H - Walking a freed and recycled entry list dereferences poisoned or attacker-influenced pointers, producing the KASAN slab-use-after-free/oops seen in the report and a reliably repeatable kernel crash."
}
]
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"title": "net: sched: use RCU read-side critical section in taprio_dump()",
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"cveId": "CVE-2024-50126",
"datePublished": "2024-11-05T17:10:53.741Z",
"dateReserved": "2024-10-21T19:36:19.954Z",
"dateUpdated": "2026-08-05T11:41:52.047Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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"vulnerability-lookup:meta": {
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"date": "2026-09-16",
"epss": "0.0023",
"percentile": "0.14023"
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"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.1\", \"versionEndExcluding\": \"6.6.59\", \"matchCriteriaId\": \"73E6DF5B-2C48-44A0-904B-A1EC3684F9D1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.11.6\", \"matchCriteriaId\": \"E4486B12-007B-4794-9857-F07145637AA1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"7F361E1D-580F-4A2D-A509-7615F73167A1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"E0F717D8-3014-4F84-8086-0124B2111379\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: sched: use RCU read-side critical section in taprio_dump()\\n\\nFix possible use-after-free in \u0027taprio_dump()\u0027 by adding RCU\\nread-side critical section there. Never seen on x86 but\\nfound on a KASAN-enabled arm64 system when investigating\\nhttps://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa:\\n\\n[T15862] BUG: KASAN: slab-use-after-free in taprio_dump+0xa0c/0xbb0\\n[T15862] Read of size 4 at addr ffff0000d4bb88f8 by task repro/15862\\n[T15862]\\n[T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro Not tainted 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2\\n[T15862] Hardware name: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 05/24/2024\\n[T15862] Call trace:\\n[T15862] dump_backtrace+0x20c/0x220\\n[T15862] show_stack+0x2c/0x40\\n[T15862] dump_stack_lvl+0xf8/0x174\\n[T15862] print_report+0x170/0x4d8\\n[T15862] kasan_report+0xb8/0x1d4\\n[T15862] __asan_report_load4_noabort+0x20/0x2c\\n[T15862] taprio_dump+0xa0c/0xbb0\\n[T15862] tc_fill_qdisc+0x540/0x1020\\n[T15862] qdisc_notify.isra.0+0x330/0x3a0\\n[T15862] tc_modify_qdisc+0x7b8/0x1838\\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\\n[T15862] rtnetlink_rcv+0x28/0x40\\n[T15862] netlink_unicast+0x51c/0x790\\n[T15862] netlink_sendmsg+0x79c/0xc20\\n[T15862] __sock_sendmsg+0xe0/0x1a0\\n[T15862] ____sys_sendmsg+0x6c0/0x840\\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\\n[T15862] __sys_sendmsg+0x110/0x1d0\\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\\n[T15862] invoke_syscall+0x88/0x2e0\\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\\n[T15862] do_el0_svc+0x44/0x60\\n[T15862] el0_svc+0x50/0x184\\n[T15862] el0t_64_sync_handler+0x120/0x12c\\n[T15862] el0t_64_sync+0x190/0x194\\n[T15862]\\n[T15862] Allocated by task 15857:\\n[T15862] kasan_save_stack+0x3c/0x70\\n[T15862] kasan_save_track+0x20/0x3c\\n[T15862] kasan_save_alloc_info+0x40/0x60\\n[T15862] __kasan_kmalloc+0xd4/0xe0\\n[T15862] __kmalloc_cache_noprof+0x194/0x334\\n[T15862] taprio_change+0x45c/0x2fe0\\n[T15862] tc_modify_qdisc+0x6a8/0x1838\\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\\n[T15862] rtnetlink_rcv+0x28/0x40\\n[T15862] netlink_unicast+0x51c/0x790\\n[T15862] netlink_sendmsg+0x79c/0xc20\\n[T15862] __sock_sendmsg+0xe0/0x1a0\\n[T15862] ____sys_sendmsg+0x6c0/0x840\\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\\n[T15862] __sys_sendmsg+0x110/0x1d0\\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\\n[T15862] invoke_syscall+0x88/0x2e0\\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\\n[T15862] do_el0_svc+0x44/0x60\\n[T15862] el0_svc+0x50/0x184\\n[T15862] el0t_64_sync_handler+0x120/0x12c\\n[T15862] el0t_64_sync+0x190/0x194\\n[T15862]\\n[T15862] Freed by task 6192:\\n[T15862] kasan_save_stack+0x3c/0x70\\n[T15862] kasan_save_track+0x20/0x3c\\n[T15862] kasan_save_free_info+0x4c/0x80\\n[T15862] poison_slab_object+0x110/0x160\\n[T15862] __kasan_slab_free+0x3c/0x74\\n[T15862] kfree+0x134/0x3c0\\n[T15862] taprio_free_sched_cb+0x18c/0x220\\n[T15862] rcu_core+0x920/0x1b7c\\n[T15862] rcu_core_si+0x10/0x1c\\n[T15862] handle_softirqs+0x2e8/0xd64\\n[T15862] __do_softirq+0x14/0x20\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: sched: usar la secci\\u00f3n cr\\u00edtica del lado de lectura de RCU en taprio_dump(). Corrija el posible use-after-free en \u0027taprio_dump()\u0027 agregando all\\u00ed la secci\\u00f3n cr\\u00edtica del lado de lectura de RCU. Nunca visto en x86 pero encontrado en un sistema arm64 habilitado para KASAN al investigar https://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa: [T15862] ERROR: KASAN: slab-use-after-free en taprio_dump+0xa0c/0xbb0 [T15862] Lectura de tama\\u00f1o 4 en la direcci\\u00f3n ffff0000d4bb88f8 por la tarea repro/15862 [T15862] [T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro No contaminado 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2 [T15862] Nombre del hardware: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 24/05/2024 [T15862] Seguimiento de llamadas: [T15862] dump_backtrace+0x20c/0x220 [T15862] show_stack+0x2c/0x40 [T15862] dump_stack_lvl+0xf8/0x174 [T15862] print_report+0x170/0x4d8 [T15862] kasan_report+0xb8/0x1d4 [T15862] __asan_report_load4_noabort+0x20/0x2c [T15862] taprio_dump+0xa0c/0xbb0 [T15862] El comando tc_fill_qdisc_notify.isra.0_0x330_0x3a0_tc_modify_qdisc_0x7b8_0x1838_rtnetlink_rcv_msg_0x3c8_0xc20_netlink_rcv_skb_0x1f8_0x3d4_rtnetlink_rcv_0x28_0x40_netlink_unicast_0x51c_0x790_netlink_sendmsg_0x79c_0xc20_tc_sendmsg_0x1a ... [T15862] ____sys_sendmsg+0x6c0/0x840 [T15862] ___sys_sendmsg+0x1ac/0x1f0 [T15862] __sys_sendmsg+0x110/0x1d0 [T15862] __arm64_sys_sendmsg+0x74/0xb0 [T15862] invoke_syscall+0x88/0x2e0 [T15862] el0_svc_common.constprop.0+0xe4/0x2a0 [T15862] do_el0_svc+0x44/0x60 [T15862] el0_svc+0x50/0x184 [T15862] el0t_64_sync_handler+0x120/0x12c [T15862] el0t_64_sync+0x190/0x194 [T15862] [T15862] Asignado por la tarea 15857: [T15862] kasan_save_stack+0x3c/0x70 [T15862] kasan_save_track+0x20/0x3c [T15862] kasan_save_alloc_info+0x40/0x60 [T15862] __kasan_kmalloc+0xd4/0xe0 [T15862] __kmalloc_cache_noprof+0x194/0x334 [T15862] taprio_change+0x45c/0x2fe0 [T15862] tc_modify_qdisc+0x6a8/0x1838 [T15862] rtnetlink_rcv_msg+0x3c8/0xc20 [T15862] netlink_rcv_skb+0x1f8/0x3d4 [T15862] rtnetlink_rcv+0x28/0x40 [T15862] netlink_unicast+0x51c/0x790 [T15862] netlink_sendmsg+0x79c/0xc20 [T15862] __sock_sendmsg+0xe0/0x1a0 [T15862] ____sys_sendmsg+0x6c0/0x840 [T15862] ___sys_sendmsg+0x1ac/0x1f0 [T15862] __sys_sendmsg+0x110/0x1d0 [T15862] __arm64_sys_sendmsg+0x74/0xb0 [T15862] invoke_syscall+0x88/0x2e0 [T15862] el0_svc_common.constprop.0+0xe4/0x2a0 [T15862] do_el0_svc+0x44/0x60 [T15862] el0_svc+0x50/0x184 [T15862] el0t_64_sync_handler+0x120/0x12c [T15862] el0t_64_sync+0x190/0x194 [T15862] [T15862] Liberado por la tarea 6192: [T15862] kasan_save_stack+0x3c/0x70 [T15862] kasan_save_track+0x20/0x3c [T15862] kasan_save_free_info+0x4c/0x80 [T15862] poison_slab_object+0x110/0x160 [T15862] __kasan_slab_free+0x3c/0x74 [T15862] kfree+0x134/0x3c0 [T15862] taprio_free_sched_cb+0x18c/0x220 [T15862] rcu_core+0x920/0x1b7c [T15862] rcu_core_si+0x10/0x1c [T15862] handle_softirqs+0x2e8/0xd64 [T15862] __do_softirq+0x14/0x20\"}]",
"id": "CVE-2024-50126",
"lastModified": "2024-12-11T15:15:12.797",
"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:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}, {\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
"published": "2024-11-05T18:15:15.607",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/5d282467245f267c0b9ada3f7f309ff838521536\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b22db8b8befe90b61c98626ca1a2fbb0505e9fe3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b911fa9e92ee586e36479ad57b88f20471acaca1\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/e4369cb6acf6b895ac2453cc1cdf2f4326122c6d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}, {\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
},
"microsoft_vex": {
"current_release_date": "2026-02-21T01:48:49.000Z",
"cve": "CVE-2024-50126",
"id": "msrc_CVE-2024-50126",
"initial_release_date": "2024-11-02T00:00:00.000Z",
"product_status:fixed": "2",
"product_status:known_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "net: sched: use RCU read-side critical section in taprio_dump()",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50126.json",
"version": "2"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2024-50126\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-05T18:15:15.607\",\"lastModified\":\"2026-06-17T08:03:39.380\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: sched: use RCU read-side critical section in taprio_dump()\\n\\nFix possible use-after-free in \u0027taprio_dump()\u0027 by adding RCU\\nread-side critical section there. Never seen on x86 but\\nfound on a KASAN-enabled arm64 system when investigating\\nhttps://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa:\\n\\n[T15862] BUG: KASAN: slab-use-after-free in taprio_dump+0xa0c/0xbb0\\n[T15862] Read of size 4 at addr ffff0000d4bb88f8 by task repro/15862\\n[T15862]\\n[T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro Not tainted 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2\\n[T15862] Hardware name: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 05/24/2024\\n[T15862] Call trace:\\n[T15862] dump_backtrace+0x20c/0x220\\n[T15862] show_stack+0x2c/0x40\\n[T15862] dump_stack_lvl+0xf8/0x174\\n[T15862] print_report+0x170/0x4d8\\n[T15862] kasan_report+0xb8/0x1d4\\n[T15862] __asan_report_load4_noabort+0x20/0x2c\\n[T15862] taprio_dump+0xa0c/0xbb0\\n[T15862] tc_fill_qdisc+0x540/0x1020\\n[T15862] qdisc_notify.isra.0+0x330/0x3a0\\n[T15862] tc_modify_qdisc+0x7b8/0x1838\\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\\n[T15862] rtnetlink_rcv+0x28/0x40\\n[T15862] netlink_unicast+0x51c/0x790\\n[T15862] netlink_sendmsg+0x79c/0xc20\\n[T15862] __sock_sendmsg+0xe0/0x1a0\\n[T15862] ____sys_sendmsg+0x6c0/0x840\\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\\n[T15862] __sys_sendmsg+0x110/0x1d0\\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\\n[T15862] invoke_syscall+0x88/0x2e0\\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\\n[T15862] do_el0_svc+0x44/0x60\\n[T15862] el0_svc+0x50/0x184\\n[T15862] el0t_64_sync_handler+0x120/0x12c\\n[T15862] el0t_64_sync+0x190/0x194\\n[T15862]\\n[T15862] Allocated by task 15857:\\n[T15862] kasan_save_stack+0x3c/0x70\\n[T15862] kasan_save_track+0x20/0x3c\\n[T15862] kasan_save_alloc_info+0x40/0x60\\n[T15862] __kasan_kmalloc+0xd4/0xe0\\n[T15862] __kmalloc_cache_noprof+0x194/0x334\\n[T15862] taprio_change+0x45c/0x2fe0\\n[T15862] tc_modify_qdisc+0x6a8/0x1838\\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\\n[T15862] rtnetlink_rcv+0x28/0x40\\n[T15862] netlink_unicast+0x51c/0x790\\n[T15862] netlink_sendmsg+0x79c/0xc20\\n[T15862] __sock_sendmsg+0xe0/0x1a0\\n[T15862] ____sys_sendmsg+0x6c0/0x840\\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\\n[T15862] __sys_sendmsg+0x110/0x1d0\\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\\n[T15862] invoke_syscall+0x88/0x2e0\\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\\n[T15862] do_el0_svc+0x44/0x60\\n[T15862] el0_svc+0x50/0x184\\n[T15862] el0t_64_sync_handler+0x120/0x12c\\n[T15862] el0t_64_sync+0x190/0x194\\n[T15862]\\n[T15862] Freed by task 6192:\\n[T15862] kasan_save_stack+0x3c/0x70\\n[T15862] kasan_save_track+0x20/0x3c\\n[T15862] kasan_save_free_info+0x4c/0x80\\n[T15862] poison_slab_object+0x110/0x160\\n[T15862] __kasan_slab_free+0x3c/0x74\\n[T15862] kfree+0x134/0x3c0\\n[T15862] taprio_free_sched_cb+0x18c/0x220\\n[T15862] rcu_core+0x920/0x1b7c\\n[T15862] rcu_core_si+0x10/0x1c\\n[T15862] handle_softirqs+0x2e8/0xd64\\n[T15862] __do_softirq+0x14/0x20\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: sched: usar la secci\u00f3n cr\u00edtica del lado de lectura de RCU en taprio_dump(). Corrija el posible use-after-free en \u0027taprio_dump()\u0027 agregando all\u00ed la secci\u00f3n cr\u00edtica del lado de lectura de RCU. Nunca visto en x86 pero encontrado en un sistema arm64 habilitado para KASAN al investigar https://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa: [T15862] ERROR: KASAN: slab-use-after-free en taprio_dump+0xa0c/0xbb0 [T15862] Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff0000d4bb88f8 por la tarea repro/15862 [T15862] [T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro No contaminado 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2 [T15862] Nombre del hardware: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 24/05/2024 [T15862] Seguimiento de llamadas: [T15862] dump_backtrace+0x20c/0x220 [T15862] show_stack+0x2c/0x40 [T15862] dump_stack_lvl+0xf8/0x174 [T15862] print_report+0x170/0x4d8 [T15862] kasan_report+0xb8/0x1d4 [T15862] __asan_report_load4_noabort+0x20/0x2c [T15862] taprio_dump+0xa0c/0xbb0 [T15862] El comando tc_fill_qdisc_notify.isra.0_0x330_0x3a0_tc_modify_qdisc_0x7b8_0x1838_rtnetlink_rcv_msg_0x3c8_0xc20_netlink_rcv_skb_0x1f8_0x3d4_rtnetlink_rcv_0x28_0x40_netlink_unicast_0x51c_0x790_netlink_sendmsg_0x79c_0xc20_tc_sendmsg_0x1a ... [T15862] ____sys_sendmsg+0x6c0/0x840 [T15862] ___sys_sendmsg+0x1ac/0x1f0 [T15862] __sys_sendmsg+0x110/0x1d0 [T15862] __arm64_sys_sendmsg+0x74/0xb0 [T15862] invoke_syscall+0x88/0x2e0 [T15862] el0_svc_common.constprop.0+0xe4/0x2a0 [T15862] do_el0_svc+0x44/0x60 [T15862] el0_svc+0x50/0x184 [T15862] el0t_64_sync_handler+0x120/0x12c [T15862] el0t_64_sync+0x190/0x194 [T15862] [T15862] Asignado por la tarea 15857: [T15862] kasan_save_stack+0x3c/0x70 [T15862] kasan_save_track+0x20/0x3c [T15862] kasan_save_alloc_info+0x40/0x60 [T15862] __kasan_kmalloc+0xd4/0xe0 [T15862] __kmalloc_cache_noprof+0x194/0x334 [T15862] taprio_change+0x45c/0x2fe0 [T15862] tc_modify_qdisc+0x6a8/0x1838 [T15862] rtnetlink_rcv_msg+0x3c8/0xc20 [T15862] netlink_rcv_skb+0x1f8/0x3d4 [T15862] rtnetlink_rcv+0x28/0x40 [T15862] netlink_unicast+0x51c/0x790 [T15862] netlink_sendmsg+0x79c/0xc20 [T15862] __sock_sendmsg+0xe0/0x1a0 [T15862] ____sys_sendmsg+0x6c0/0x840 [T15862] ___sys_sendmsg+0x1ac/0x1f0 [T15862] __sys_sendmsg+0x110/0x1d0 [T15862] __arm64_sys_sendmsg+0x74/0xb0 [T15862] invoke_syscall+0x88/0x2e0 [T15862] el0_svc_common.constprop.0+0xe4/0x2a0 [T15862] do_el0_svc+0x44/0x60 [T15862] el0_svc+0x50/0x184 [T15862] el0t_64_sync_handler+0x120/0x12c [T15862] el0t_64_sync+0x190/0x194 [T15862] [T15862] Liberado por la tarea 6192: [T15862] kasan_save_stack+0x3c/0x70 [T15862] kasan_save_track+0x20/0x3c [T15862] kasan_save_free_info+0x4c/0x80 [T15862] poison_slab_object+0x110/0x160 [T15862] __kasan_slab_free+0x3c/0x74 [T15862] kfree+0x134/0x3c0 [T15862] taprio_free_sched_cb+0x18c/0x220 [T15862] rcu_core+0x920/0x1b7c [T15862] rcu_core_si+0x10/0x1c [T15862] handle_softirqs+0x2e8/0xd64 [T15862] __do_softirq+0x14/0x20\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/sched/sch_taprio.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"18cdd2f0998a4967b1fff4c43ed9aef049e42c39\",\"lessThan\":\"b911fa9e92ee586e36479ad57b88f20471acaca1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18cdd2f0998a4967b1fff4c43ed9aef049e42c39\",\"lessThan\":\"5d282467245f267c0b9ada3f7f309ff838521536\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18cdd2f0998a4967b1fff4c43ed9aef049e42c39\",\"lessThan\":\"e4369cb6acf6b895ac2453cc1cdf2f4326122c6d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"18cdd2f0998a4967b1fff4c43ed9aef049e42c39\",\"lessThan\":\"b22db8b8befe90b61c98626ca1a2fbb0505e9fe3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/sched/sch_taprio.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.1\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.1\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.117\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.59\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.6\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-12-11T14:28:25.069183Z\",\"id\":\"CVE-2024-50126\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1\",\"versionEndExcluding\":\"6.6.59\",\"matchCriteriaId\":\"73E6DF5B-2C48-44A0-904B-A1EC3684F9D1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.6\",\"matchCriteriaId\":\"E4486B12-007B-4794-9857-F07145637AA1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0F717D8-3014-4F84-8086-0124B2111379\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5d282467245f267c0b9ada3f7f309ff838521536\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b22db8b8befe90b61c98626ca1a2fbb0505e9fe3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b911fa9e92ee586e36479ad57b88f20471acaca1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4369cb6acf6b895ac2453cc1cdf2f4326122c6d\",\"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": "2026-06-28T08:08:43+00:00",
"cve": "CVE-2024-50126",
"id": "CVE-2024-50126",
"initial_release_date": "2024-11-05T00:00:00+00:00",
"product_status:fixed": "305",
"product_status:known_affected": "22",
"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: net: sched: use RCU read-side critical section in taprio_dump()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50126.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T02:11:44Z",
"cve": "CVE-2024-50126",
"id": "CVE-2024-50126",
"initial_release_date": "2024-11-06T03:48:46Z",
"product_status:known_affected": "419",
"product_status:known_not_affected": "452",
"product_status:recommended": "355",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2024-50126",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50126.json",
"version": "66"
},
"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\": \"2025-11-03T22:25:47.069Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-50126\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-12-11T14:28:25.069183Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-12-11T14:28:26.361Z\"}}], \"cna\": {\"title\": \"net: sched: use RCU read-side critical section in taprio_dump()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"18cdd2f0998a4967b1fff4c43ed9aef049e42c39\", \"lessThan\": \"b911fa9e92ee586e36479ad57b88f20471acaca1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18cdd2f0998a4967b1fff4c43ed9aef049e42c39\", \"lessThan\": \"5d282467245f267c0b9ada3f7f309ff838521536\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18cdd2f0998a4967b1fff4c43ed9aef049e42c39\", \"lessThan\": \"e4369cb6acf6b895ac2453cc1cdf2f4326122c6d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"18cdd2f0998a4967b1fff4c43ed9aef049e42c39\", \"lessThan\": \"b22db8b8befe90b61c98626ca1a2fbb0505e9fe3\", \"versionType\": \"git\"}], \"programFiles\": [\"net/sched/sch_taprio.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.1\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.1\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.117\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.59\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/sched/sch_taprio.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b911fa9e92ee586e36479ad57b88f20471acaca1\"}, {\"url\": \"https://git.kernel.org/stable/c/5d282467245f267c0b9ada3f7f309ff838521536\"}, {\"url\": \"https://git.kernel.org/stable/c/e4369cb6acf6b895ac2453cc1cdf2f4326122c6d\"}, {\"url\": \"https://git.kernel.org/stable/c/b22db8b8befe90b61c98626ca1a2fbb0505e9fe3\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: sched: use RCU read-side critical section in taprio_dump()\\n\\nFix possible use-after-free in \u0027taprio_dump()\u0027 by adding RCU\\nread-side critical section there. Never seen on x86 but\\nfound on a KASAN-enabled arm64 system when investigating\\nhttps://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa:\\n\\n[T15862] BUG: KASAN: slab-use-after-free in taprio_dump+0xa0c/0xbb0\\n[T15862] Read of size 4 at addr ffff0000d4bb88f8 by task repro/15862\\n[T15862]\\n[T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro Not tainted 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2\\n[T15862] Hardware name: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 05/24/2024\\n[T15862] Call trace:\\n[T15862] dump_backtrace+0x20c/0x220\\n[T15862] show_stack+0x2c/0x40\\n[T15862] dump_stack_lvl+0xf8/0x174\\n[T15862] print_report+0x170/0x4d8\\n[T15862] kasan_report+0xb8/0x1d4\\n[T15862] __asan_report_load4_noabort+0x20/0x2c\\n[T15862] taprio_dump+0xa0c/0xbb0\\n[T15862] tc_fill_qdisc+0x540/0x1020\\n[T15862] qdisc_notify.isra.0+0x330/0x3a0\\n[T15862] tc_modify_qdisc+0x7b8/0x1838\\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\\n[T15862] rtnetlink_rcv+0x28/0x40\\n[T15862] netlink_unicast+0x51c/0x790\\n[T15862] netlink_sendmsg+0x79c/0xc20\\n[T15862] __sock_sendmsg+0xe0/0x1a0\\n[T15862] ____sys_sendmsg+0x6c0/0x840\\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\\n[T15862] __sys_sendmsg+0x110/0x1d0\\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\\n[T15862] invoke_syscall+0x88/0x2e0\\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\\n[T15862] do_el0_svc+0x44/0x60\\n[T15862] el0_svc+0x50/0x184\\n[T15862] el0t_64_sync_handler+0x120/0x12c\\n[T15862] el0t_64_sync+0x190/0x194\\n[T15862]\\n[T15862] Allocated by task 15857:\\n[T15862] kasan_save_stack+0x3c/0x70\\n[T15862] kasan_save_track+0x20/0x3c\\n[T15862] kasan_save_alloc_info+0x40/0x60\\n[T15862] __kasan_kmalloc+0xd4/0xe0\\n[T15862] __kmalloc_cache_noprof+0x194/0x334\\n[T15862] taprio_change+0x45c/0x2fe0\\n[T15862] tc_modify_qdisc+0x6a8/0x1838\\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\\n[T15862] rtnetlink_rcv+0x28/0x40\\n[T15862] netlink_unicast+0x51c/0x790\\n[T15862] netlink_sendmsg+0x79c/0xc20\\n[T15862] __sock_sendmsg+0xe0/0x1a0\\n[T15862] ____sys_sendmsg+0x6c0/0x840\\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\\n[T15862] __sys_sendmsg+0x110/0x1d0\\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\\n[T15862] invoke_syscall+0x88/0x2e0\\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\\n[T15862] do_el0_svc+0x44/0x60\\n[T15862] el0_svc+0x50/0x184\\n[T15862] el0t_64_sync_handler+0x120/0x12c\\n[T15862] el0t_64_sync+0x190/0x194\\n[T15862]\\n[T15862] Freed by task 6192:\\n[T15862] kasan_save_stack+0x3c/0x70\\n[T15862] kasan_save_track+0x20/0x3c\\n[T15862] kasan_save_free_info+0x4c/0x80\\n[T15862] poison_slab_object+0x110/0x160\\n[T15862] __kasan_slab_free+0x3c/0x74\\n[T15862] kfree+0x134/0x3c0\\n[T15862] taprio_free_sched_cb+0x18c/0x220\\n[T15862] rcu_core+0x920/0x1b7c\\n[T15862] rcu_core_si+0x10/0x1c\\n[T15862] handle_softirqs+0x2e8/0xd64\\n[T15862] __do_softirq+0x14/0x20\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.117\", \"versionStartIncluding\": \"6.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.59\", \"versionStartIncluding\": \"6.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.6\", \"versionStartIncluding\": \"6.1\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"6.1\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:46:38.705Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-50126\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T22:25:47.069Z\", \"dateReserved\": \"2024-10-21T19:36:19.954Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-05T17:10:53.741Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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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