CVE-2026-23126 (GCVE-0-2026-23126)
Vulnerability from cvelistv5 – Published: 2026-02-14 15:09 – Updated: 2026-02-14 15:09
VLAI?
Title
netdevsim: fix a race issue related to the operation on bpf_bound_progs list
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
31d3ad832948c75139b0e5b653912f7898a1d5d5 , < 3f560cfc7706029294132482fff5d1bc7884b70d
(git)
Affected: 31d3ad832948c75139b0e5b653912f7898a1d5d5 , < f1f9cfd2f46a73b7de2982d01be822eac3a0efaa (git) Affected: 31d3ad832948c75139b0e5b653912f7898a1d5d5 , < d77379ca82efcb2fe563359cc795027d680410db (git) Affected: 31d3ad832948c75139b0e5b653912f7898a1d5d5 , < 68462ecc40ea8f780fb3c74ebfddd05506bb731b (git) Affected: 31d3ad832948c75139b0e5b653912f7898a1d5d5 , < b97d5eedf4976cc94321243be83b39efe81a0e15 (git) |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/netdevsim/bpf.c",
"drivers/net/netdevsim/dev.c",
"drivers/net/netdevsim/netdevsim.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3f560cfc7706029294132482fff5d1bc7884b70d",
"status": "affected",
"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5",
"versionType": "git"
},
{
"lessThan": "f1f9cfd2f46a73b7de2982d01be822eac3a0efaa",
"status": "affected",
"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5",
"versionType": "git"
},
{
"lessThan": "d77379ca82efcb2fe563359cc795027d680410db",
"status": "affected",
"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5",
"versionType": "git"
},
{
"lessThan": "68462ecc40ea8f780fb3c74ebfddd05506bb731b",
"status": "affected",
"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5",
"versionType": "git"
},
{
"lessThan": "b97d5eedf4976cc94321243be83b39efe81a0e15",
"status": "affected",
"version": "31d3ad832948c75139b0e5b653912f7898a1d5d5",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/netdevsim/bpf.c",
"drivers/net/netdevsim/dev.c",
"drivers/net/netdevsim/netdevsim.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.16"
},
{
"lessThan": "4.16",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.162",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.122",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.68",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.162",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.122",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.68",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.8",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
"versionStartIncluding": "4.16",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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 \u003c0f\u003e 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] \u003cTASK\u003e\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] \u003c/TASK\u003e\n\nAdd a mutex lock, to prevent simultaneous addition and deletion operations\non the list."
}
],
"providerMetadata": {
"dateUpdated": "2026-02-14T15:09:55.552Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"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"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23126",
"datePublished": "2026-02-14T15:09:55.552Z",
"dateReserved": "2026-01-13T15:37:45.970Z",
"dateUpdated": "2026-02-14T15:09:55.552Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-23126\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-14T15:16:07.853\",\"lastModified\":\"2026-02-14T15:16:07.853\",\"vulnStatus\":\"Received\",\"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 \u003c0f\u003e 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] \u003cTASK\u003e\\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] \u003c/TASK\u003e\\n\\nAdd a mutex lock, to prevent simultaneous addition and deletion operations\\non the list.\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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