CVE-2026-23126 - Vulnerability Details

Vendors	Products
Linux Subscribe	Linux Kernel Subscribe

Link	Providers
https://git.kernel.org/stable/c/3f560cfc7706029294132482fff5d1bc7884b70d
https://git.kernel.org/stable/c/68462ecc40ea8f780fb3c74ebfddd05506bb731b
https://git.kernel.org/stable/c/b97d5eedf4976cc94321243be83b39efe81a0e15
https://git.kernel.org/stable/c/d77379ca82efcb2fe563359cc795027d680410db
https://git.kernel.org/stable/c/f1f9cfd2f46a73b7de2982d01be822eac3a0efaa

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: netdevsim: fix a race issue related to the operation on bpf_bound_progs list The netdevsim driver lacks a protection mechanism for operations on the bpf_bound_progs list. When the nsim_bpf_create_prog() performs list_add_tail, it is possible that nsim_bpf_destroy_prog() is simultaneously performs list_del. Concurrent operations on the list may lead to list corruption and trigger a kernel crash as follows: [ 417.290971] kernel BUG at lib/list_debug.c:62! [ 417.290983] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 417.290992] CPU: 10 PID: 168 Comm: kworker/10:1 Kdump: loaded Not tainted 6.19.0-rc5 #1 [ 417.291003] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 417.291007] Workqueue: events bpf_prog_free_deferred [ 417.291021] RIP: 0010:__list_del_entry_valid_or_report+0xa7/0xc0 [ 417.291034] Code: a8 ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 48 a1 eb ae e8 ed fb a8 ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 80 a1 eb ae e8 d9 fb a8 ff <0f> 0b 48 89 d1 48 c7 c7 d0 a1 eb ae 48 89 f2 48 89 c6 e8 c2 fb a8 [ 417.291040] RSP: 0018:ffffb16a40807df8 EFLAGS: 00010246 [ 417.291046] RAX: 000000000000006d RBX: ffff8e589866f500 RCX: 0000000000000000 [ 417.291051] RDX: 0000000000000000 RSI: ffff8e59f7b23180 RDI: ffff8e59f7b23180 [ 417.291055] RBP: ffffb16a412c9000 R08: 0000000000000000 R09: 0000000000000003 [ 417.291059] R10: ffffb16a40807c80 R11: ffffffffaf9edce8 R12: ffff8e594427ac20 [ 417.291063] R13: ffff8e59f7b44780 R14: ffff8e58800b7a05 R15: 0000000000000000 [ 417.291074] FS: 0000000000000000(0000) GS:ffff8e59f7b00000(0000) knlGS:0000000000000000 [ 417.291079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 417.291083] CR2: 00007fc4083efe08 CR3: 00000001c3626006 CR4: 0000000000770ee0 [ 417.291088] PKRU: 55555554 [ 417.291091] Call Trace: [ 417.291096] <TASK> [ 417.291103] nsim_bpf_destroy_prog+0x31/0x80 [netdevsim] [ 417.291154] __bpf_prog_offload_destroy+0x2a/0x80 [ 417.291163] bpf_prog_dev_bound_destroy+0x6f/0xb0 [ 417.291171] bpf_prog_free_deferred+0x18e/0x1a0 [ 417.291178] process_one_work+0x18a/0x3a0 [ 417.291188] worker_thread+0x27b/0x3a0 [ 417.291197] ? __pfx_worker_thread+0x10/0x10 [ 417.291207] kthread+0xe5/0x120 [ 417.291214] ? __pfx_kthread+0x10/0x10 [ 417.291221] ret_from_fork+0x31/0x50 [ 417.291230] ? __pfx_kthread+0x10/0x10 [ 417.291236] ret_from_fork_asm+0x1a/0x30 [ 417.291246] </TASK> Add a mutex lock, to prevent simultaneous addition and deletion operations on the list.
Title		netdevsim: fix a race issue related to the operation on bpf_bound_progs list
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/3f560cfc7706029294132482fff5d1bc7884b70d https://git.kernel.org/stable/c/68462ecc40ea8f780fb3c74ebfddd05506bb731b https://git.kernel.org/stable/c/b97d5eedf4976cc94321243be83b39efe81a0e15 https://git.kernel.org/stable/c/d77379ca82efcb2fe563359cc795027d680410db https://git.kernel.org/stable/c/f1f9cfd2f46a73b7de2982d01be822eac3a0efaa

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23126", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.970Z", "datePublished": "2026-02-14T15:09:55.552Z", "dateUpdated": "2026-02-14T15:09:55.552Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-14T15:09:55.552Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: fix a race issue related to the operation on bpf_bound_progs list\n\nThe netdevsim driver lacks a protection mechanism for operations on the\nbpf_bound_progs list. When the nsim_bpf_create_prog() performs\nlist_add_tail, it is possible that nsim_bpf_destroy_prog() is\nsimultaneously performs list_del. Concurrent operations on the list may\nlead to list corruption and trigger a kernel crash as follows:\n\n[ 417.290971] kernel BUG at lib/list_debug.c:62!\n[ 417.290983] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n[ 417.290992] CPU: 10 PID: 168 Comm: kworker/10:1 Kdump: loaded Not tainted 6.19.0-rc5 #1\n[ 417.291003] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 417.291007] Workqueue: events bpf_prog_free_deferred\n[ 417.291021] RIP: 0010:__list_del_entry_valid_or_report+0xa7/0xc0\n[ 417.291034] Code: a8 ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 48 a1 eb ae e8 ed fb a8 ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 80 a1 eb ae e8 d9 fb a8 ff <0f> 0b 48 89 d1 48 c7 c7 d0 a1 eb ae 48 89 f2 48 89 c6 e8 c2 fb a8\n[ 417.291040] RSP: 0018:ffffb16a40807df8 EFLAGS: 00010246\n[ 417.291046] RAX: 000000000000006d RBX: ffff8e589866f500 RCX: 0000000000000000\n[ 417.291051] RDX: 0000000000000000 RSI: ffff8e59f7b23180 RDI: ffff8e59f7b23180\n[ 417.291055] RBP: ffffb16a412c9000 R08: 0000000000000000 R09: 0000000000000003\n[ 417.291059] R10: ffffb16a40807c80 R11: ffffffffaf9edce8 R12: ffff8e594427ac20\n[ 417.291063] R13: ffff8e59f7b44780 R14: ffff8e58800b7a05 R15: 0000000000000000\n[ 417.291074] FS: 0000000000000000(0000) GS:ffff8e59f7b00000(0000) knlGS:0000000000000000\n[ 417.291079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 417.291083] CR2: 00007fc4083efe08 CR3: 00000001c3626006 CR4: 0000000000770ee0\n[ 417.291088] PKRU: 55555554\n[ 417.291091] Call Trace:\n[ 417.291096] <TASK>\n[ 417.291103] nsim_bpf_destroy_prog+0x31/0x80 [netdevsim]\n[ 417.291154] __bpf_prog_offload_destroy+0x2a/0x80\n[ 417.291163] bpf_prog_dev_bound_destroy+0x6f/0xb0\n[ 417.291171] bpf_prog_free_deferred+0x18e/0x1a0\n[ 417.291178] process_one_work+0x18a/0x3a0\n[ 417.291188] worker_thread+0x27b/0x3a0\n[ 417.291197] ? __pfx_worker_thread+0x10/0x10\n[ 417.291207] kthread+0xe5/0x120\n[ 417.291214] ? __pfx_kthread+0x10/0x10\n[ 417.291221] ret_from_fork+0x31/0x50\n[ 417.291230] ? __pfx_kthread+0x10/0x10\n[ 417.291236] ret_from_fork_asm+0x1a/0x30\n[ 417.291246] </TASK>\n\nAdd a mutex lock, to prevent simultaneous addition and deletion operations\non the list."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/netdevsim/bpf.c", "drivers/net/netdevsim/dev.c", "drivers/net/netdevsim/netdevsim.h"], "versions": [{"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5", "lessThan": "3f560cfc7706029294132482fff5d1bc7884b70d", "status": "affected", "versionType": "git"}, {"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5", "lessThan": "f1f9cfd2f46a73b7de2982d01be822eac3a0efaa", "status": "affected", "versionType": "git"}, {"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5", "lessThan": "d77379ca82efcb2fe563359cc795027d680410db", "status": "affected", "versionType": "git"}, {"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5", "lessThan": "68462ecc40ea8f780fb3c74ebfddd05506bb731b", "status": "affected", "versionType": "git"}, {"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5", "lessThan": "b97d5eedf4976cc94321243be83b39efe81a0e15", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/netdevsim/bpf.c", "drivers/net/netdevsim/dev.c", "drivers/net/netdevsim/netdevsim.h"], "versions": [{"version": "4.16", "status": "affected"}, {"version": "0", "lessThan": "4.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.162", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.122", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.68", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.8", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.1.162"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.6.122"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.12.68"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.18.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3f560cfc7706029294132482fff5d1bc7884b70d"}, {"url": "https://git.kernel.org/stable/c/f1f9cfd2f46a73b7de2982d01be822eac3a0efaa"}, {"url": "https://git.kernel.org/stable/c/d77379ca82efcb2fe563359cc795027d680410db"}, {"url": "https://git.kernel.org/stable/c/68462ecc40ea8f780fb3c74ebfddd05506bb731b"}, {"url": "https://git.kernel.org/stable/c/b97d5eedf4976cc94321243be83b39efe81a0e15"}], "title": "netdevsim: fix a race issue related to the operation on bpf_bound_progs list", "x_generator": {"engine": "bippy-1.2.0"}}}}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: fix a race issue related to the operation on bpf_bound_progs list\n\nThe netdevsim driver lacks a protection mechanism for operations on the\nbpf_bound_progs list. When the nsim_bpf_create_prog() performs\nlist_add_tail, it is possible that nsim_bpf_destroy_prog() is\nsimultaneously performs list_del. Concurrent operations on the list may\nlead to list corruption and trigger a kernel crash as follows:\n\n[ 417.290971] kernel BUG at lib/list_debug.c:62!\n[ 417.290983] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n[ 417.290992] CPU: 10 PID: 168 Comm: kworker/10:1 Kdump: loaded Not tainted 6.19.0-rc5 #1\n[ 417.291003] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 417.291007] Workqueue: events bpf_prog_free_deferred\n[ 417.291021] RIP: 0010:__list_del_entry_valid_or_report+0xa7/0xc0\n[ 417.291034] Code: a8 ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 48 a1 eb ae e8 ed fb a8 ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 80 a1 eb ae e8 d9 fb a8 ff <0f> 0b 48 89 d1 48 c7 c7 d0 a1 eb ae 48 89 f2 48 89 c6 e8 c2 fb a8\n[ 417.291040] RSP: 0018:ffffb16a40807df8 EFLAGS: 00010246\n[ 417.291046] RAX: 000000000000006d RBX: ffff8e589866f500 RCX: 0000000000000000\n[ 417.291051] RDX: 0000000000000000 RSI: ffff8e59f7b23180 RDI: ffff8e59f7b23180\n[ 417.291055] RBP: ffffb16a412c9000 R08: 0000000000000000 R09: 0000000000000003\n[ 417.291059] R10: ffffb16a40807c80 R11: ffffffffaf9edce8 R12: ffff8e594427ac20\n[ 417.291063] R13: ffff8e59f7b44780 R14: ffff8e58800b7a05 R15: 0000000000000000\n[ 417.291074] FS: 0000000000000000(0000) GS:ffff8e59f7b00000(0000) knlGS:0000000000000000\n[ 417.291079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 417.291083] CR2: 00007fc4083efe08 CR3: 00000001c3626006 CR4: 0000000000770ee0\n[ 417.291088] PKRU: 55555554\n[ 417.291091] Call Trace:\n[ 417.291096] <TASK>\n[ 417.291103] nsim_bpf_destroy_prog+0x31/0x80 [netdevsim]\n[ 417.291154] __bpf_prog_offload_destroy+0x2a/0x80\n[ 417.291163] bpf_prog_dev_bound_destroy+0x6f/0xb0\n[ 417.291171] bpf_prog_free_deferred+0x18e/0x1a0\n[ 417.291178] process_one_work+0x18a/0x3a0\n[ 417.291188] worker_thread+0x27b/0x3a0\n[ 417.291197] ? __pfx_worker_thread+0x10/0x10\n[ 417.291207] kthread+0xe5/0x120\n[ 417.291214] ? __pfx_kthread+0x10/0x10\n[ 417.291221] ret_from_fork+0x31/0x50\n[ 417.291230] ? __pfx_kthread+0x10/0x10\n[ 417.291236] ret_from_fork_asm+0x1a/0x30\n[ 417.291246] </TASK>\n\nAdd a mutex lock, to prevent simultaneous addition and deletion operations\non the list."}], "id": "CVE-2026-23126", "lastModified": "2026-02-14T15:16:07.853", "metrics": {}, "published": "2026-02-14T15:16:07.853", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3f560cfc7706029294132482fff5d1bc7884b70d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/68462ecc40ea8f780fb3c74ebfddd05506bb731b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b97d5eedf4976cc94321243be83b39efe81a0e15"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d77379ca82efcb2fe563359cc795027d680410db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f1f9cfd2f46a73b7de2982d01be822eac3a0efaa"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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