CVE-2026-23336 (GCVE-0-2026-23336)
Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-10-19 18:35
VLAI
EPSS
VEX
Title
wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()
There is a use-after-free error in cfg80211_shutdown_all_interfaces found
by syzkaller:
BUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x213/0x220
Read of size 8 at addr ffff888112a78d98 by task kworker/0:5/5326
CPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 Not tainted 6.19.0-rc2 #2 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
Workqueue: events cfg80211_rfkill_block_work
Call Trace:
<TASK>
dump_stack_lvl+0x116/0x1f0
print_report+0xcd/0x630
kasan_report+0xe0/0x110
cfg80211_shutdown_all_interfaces+0x213/0x220
cfg80211_rfkill_block_work+0x1e/0x30
process_one_work+0x9cf/0x1b70
worker_thread+0x6c8/0xf10
kthread+0x3c5/0x780
ret_from_fork+0x56d/0x700
ret_from_fork_asm+0x1a/0x30
</TASK>
The problem arises due to the rfkill_block work is not cancelled when wiphy
is being unregistered. In order to fix the issue cancel the corresponding
work in wiphy_unregister().
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:07 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
9 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 , < 82a35356b5c1f75fe6a8a561db44e8d0e49da8f9
(git)
Affected: 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 , < b2e9626a9d16b9bbbd06498c9e73c93be354dc7a (git) Affected: 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 , < eeea8da43ab86ac0a6b9cec225eec91564346940 (git) Affected: 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 , < fa18639deab4a3662d543200c5bfc29bf4e23173 (git) Affected: 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 , < 57e39fe8da573435fa35975f414f4dc17d9f8449 (git) Affected: 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 , < 584279ad9ff1e8e7c5494b9fce286201f7d1f9e2 (git) Affected: 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 , < cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5 (git) Affected: 1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3 , < 767d23ade706d5fa51c36168e92a9c5533c351a1 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.31
Unaffected: 0 , < 2.6.31 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.77 , ≤ 6.12.* (semver) Unaffected: 6.18.17 , ≤ 6.18.* (semver) Unaffected: 6.19.7 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T01:14:09.140Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}
],
"x_adpType": "supplier"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-23336",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-16T15:07:26.471967Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-19T18:35:41.752Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/wireless/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "82a35356b5c1f75fe6a8a561db44e8d0e49da8f9",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "b2e9626a9d16b9bbbd06498c9e73c93be354dc7a",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "eeea8da43ab86ac0a6b9cec225eec91564346940",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "fa18639deab4a3662d543200c5bfc29bf4e23173",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "57e39fe8da573435fa35975f414f4dc17d9f8449",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "584279ad9ff1e8e7c5494b9fce286201f7d1f9e2",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "767d23ade706d5fa51c36168e92a9c5533c351a1",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/wireless/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"lessThan": "2.6.31",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.253",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.203",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.167",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.130",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.77",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.17",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19.7",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0",
"versionStartIncluding": "2.6.31",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: cancel rfkill_block work in wiphy_unregister()\n\nThere is a use-after-free error in cfg80211_shutdown_all_interfaces found\nby syzkaller:\n\nBUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x213/0x220\nRead of size 8 at addr ffff888112a78d98 by task kworker/0:5/5326\nCPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 Not tainted 6.19.0-rc2 #2 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nWorkqueue: events cfg80211_rfkill_block_work\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x116/0x1f0\n print_report+0xcd/0x630\n kasan_report+0xe0/0x110\n cfg80211_shutdown_all_interfaces+0x213/0x220\n cfg80211_rfkill_block_work+0x1e/0x30\n process_one_work+0x9cf/0x1b70\n worker_thread+0x6c8/0xf10\n kthread+0x3c5/0x780\n ret_from_fork+0x56d/0x700\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nThe problem arises due to the rfkill_block work is not cancelled when wiphy\nis being unregistered. In order to fix the issue cancel the corresponding\nwork in wiphy_unregister().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
}
],
"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 vulnerability is triggered through WiFi driver device lifecycle operations (device registration/removal and rfkill state changes), requiring local system access. Not remotely reachable through WiFi frames \u2014 it\u0027s a driver management race condition.\nAC:L - The attacker controls both sides of the race \u2014 device insertion triggers rfkill hardware state changes, and device removal triggers wiphy_unregister(). A crafted USB WiFi device can reliably trigger both events in the needed sequence.\nPR:L - A local user with access to USB ports or device management interfaces can trigger device attachment/removal. No root/CAP_NET_ADMIN is needed to plug in a USB WiFi device on shared workstations.\nUI:N - No user interaction is required; the attacker triggers both the rfkill state change and the device unregistration autonomously.\nS:U - Standard kernel vulnerability \u2014 the impact remains within the same security authority (kernel space). No VM escape or sandbox boundary crossing.\nC:H - This is a use-after-free where the attacker can control freed heap contents through heap spraying, enabling arbitrary memory reads via the freed rdev structure.\nI:H - The UAF accesses freed memory that iterates a list and calls dev_close() on network devices. With heap spray, the attacker can redirect function pointers for arbitrary code execution in kernel context.\nA:H - The kernel crash is confirmed by the KASAN report showing a use-after-free read in cfg80211_shutdown_all_interfaces. Any UAF reliably causes kernel oops/panic."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:21:13.568Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/82a35356b5c1f75fe6a8a561db44e8d0e49da8f9"
},
{
"url": "https://git.kernel.org/stable/c/b2e9626a9d16b9bbbd06498c9e73c93be354dc7a"
},
{
"url": "https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940"
},
{
"url": "https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173"
},
{
"url": "https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449"
},
{
"url": "https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2"
},
{
"url": "https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5"
},
{
"url": "https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1"
}
],
"title": "wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23336",
"datePublished": "2026-03-25T10:27:26.061Z",
"dateReserved": "2026-01-13T15:37:45.997Z",
"dateUpdated": "2026-10-19T18:35:41.752Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-23336",
"date": "2026-11-14",
"epss": "0.00141",
"percentile": "0.0348"
},
"microsoft_vex": {
"current_release_date": "2026-10-16T01:46:11.000Z",
"cve": "CVE-2026-23336",
"id": "msrc_CVE-2026-23336",
"initial_release_date": "2026-03-26T01:06:05.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "3",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-23336.json",
"version": "4"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/wireless/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "82a35356b5c1f75fe6a8a561db44e8d0e49da8f9",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "b2e9626a9d16b9bbbd06498c9e73c93be354dc7a",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "eeea8da43ab86ac0a6b9cec225eec91564346940",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "fa18639deab4a3662d543200c5bfc29bf4e23173",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "57e39fe8da573435fa35975f414f4dc17d9f8449",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "584279ad9ff1e8e7c5494b9fce286201f7d1f9e2",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "767d23ade706d5fa51c36168e92a9c5533c351a1",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/wireless/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"lessThan": "2.6.31",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "57E89197-6305-4D47-AE24-4D5D20CC8429",
"versionEndExcluding": "5.10.253",
"versionStartIncluding": "2.6.31.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045",
"versionEndExcluding": "5.15.203",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2EDC6BAF-B710-4E26-B6AA-D68922EE7B43",
"versionEndExcluding": "6.1.167",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C57BB918-DF28-46B3-94F7-144176841267",
"versionEndExcluding": "6.6.130",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B3D12E00-E42D-4056-B354-BAD4903C03A5",
"versionEndExcluding": "6.12.77",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A5E006E4-59C7-43C1-9231-62A72219F2BA",
"versionEndExcluding": "6.18.17",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "69245D10-0B71-485E-80C3-A64F077004D3",
"versionEndExcluding": "6.19.7",
"versionStartIncluding": "6.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.31:-:*:*:*:*:*:*",
"matchCriteriaId": "2887290A-1B43-4DB9-A9D0-B0B56CD78E48",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*",
"matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*",
"matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*",
"matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*",
"matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*",
"matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*",
"matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*",
"matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: cancel rfkill_block work in wiphy_unregister()\n\nThere is a use-after-free error in cfg80211_shutdown_all_interfaces found\nby syzkaller:\n\nBUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x213/0x220\nRead of size 8 at addr ffff888112a78d98 by task kworker/0:5/5326\nCPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 Not tainted 6.19.0-rc2 #2 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nWorkqueue: events cfg80211_rfkill_block_work\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x116/0x1f0\n print_report+0xcd/0x630\n kasan_report+0xe0/0x110\n cfg80211_shutdown_all_interfaces+0x213/0x220\n cfg80211_rfkill_block_work+0x1e/0x30\n process_one_work+0x9cf/0x1b70\n worker_thread+0x6c8/0xf10\n kthread+0x3c5/0x780\n ret_from_fork+0x56d/0x700\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nThe problem arises due to the rfkill_block work is not cancelled when wiphy\nis being unregistered. In order to fix the issue cancel the corresponding\nwork in wiphy_unregister().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: cfg80211: cancelar el trabajo rfkill_block en wiphy_unregister()\n\nExiste un error de uso despu\u00e9s de liberaci\u00f3n en cfg80211_shutdown_all_interfaces encontrado por syzkaller:\n\nBUG: KASAN: uso despu\u00e9s de liberaci\u00f3n en cfg80211_shutdown_all_interfaces+0x213/0x220\nLectura de tama\u00f1o 8 en la direcci\u00f3n ffff888112a78d98 por la tarea kworker/0:5/5326\nCPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 No contaminado 6.19.0-rc2 #2 PREEMPT(voluntario)\nNombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCola de trabajo: eventos cfg80211_rfkill_block_work\nRastro de llamada:\n \n dump_stack_lvl+0x116/0x1f0\n print_report+0xcd/0x630\n kasan_report+0xe0/0x110\n cfg80211_shutdown_all_interfaces+0x213/0x220\n cfg80211_rfkill_block_work+0x1e/0x30\n process_one_work+0x9cf/0x1b70\n worker_thread+0x6c8/0xf10\n kthread+0x3c5/0x780\n ret_from_fork+0x56d/0x700\n ret_from_fork_asm+0x1a/0x30\n \n\nEl problema surge debido a que el trabajo rfkill_block no se cancela cuando wiphy est\u00e1 siendo desregistrado. Para solucionar el problema, cancele el trabajo correspondiente en wiphy_unregister().\n\nEncontrado por Linux Verification Center (linuxtesting.org) con Syzkaller."
}
],
"id": "CVE-2026-23336",
"lastModified": "2026-10-19T19:17:45.700",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-23336",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-16T15:07:26.471967Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-03-25T11:16:31.210",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/82a35356b5c1f75fe6a8a561db44e8d0e49da8f9"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b2e9626a9d16b9bbbd06498c9e73c93be354dc7a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173"
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-11-05T19:12:12+00:00",
"cve": "CVE-2026-23336",
"id": "CVE-2026-23336",
"initial_release_date": "2026-03-25T00:00:00+00:00",
"product_status:known_affected": "200",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23336.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T01:14:09.140Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}
],
"x_adpType": "supplier"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-23336",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-16T15:07:26.471967Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-16T15:07:27.058Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/wireless/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "82a35356b5c1f75fe6a8a561db44e8d0e49da8f9",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "b2e9626a9d16b9bbbd06498c9e73c93be354dc7a",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "eeea8da43ab86ac0a6b9cec225eec91564346940",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "fa18639deab4a3662d543200c5bfc29bf4e23173",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "57e39fe8da573435fa35975f414f4dc17d9f8449",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "584279ad9ff1e8e7c5494b9fce286201f7d1f9e2",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
},
{
"lessThan": "767d23ade706d5fa51c36168e92a9c5533c351a1",
"status": "affected",
"version": "1f87f7d3a3b42b20f34cb03f0fd1a41c3d0e27f3",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/wireless/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"lessThan": "2.6.31",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.253",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.203",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.167",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.130",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.77",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.17",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19.7",
"versionStartIncluding": "2.6.31",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0",
"versionStartIncluding": "2.6.31",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: cancel rfkill_block work in wiphy_unregister()\n\nThere is a use-after-free error in cfg80211_shutdown_all_interfaces found\nby syzkaller:\n\nBUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x213/0x220\nRead of size 8 at addr ffff888112a78d98 by task kworker/0:5/5326\nCPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 Not tainted 6.19.0-rc2 #2 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nWorkqueue: events cfg80211_rfkill_block_work\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x116/0x1f0\n print_report+0xcd/0x630\n kasan_report+0xe0/0x110\n cfg80211_shutdown_all_interfaces+0x213/0x220\n cfg80211_rfkill_block_work+0x1e/0x30\n process_one_work+0x9cf/0x1b70\n worker_thread+0x6c8/0xf10\n kthread+0x3c5/0x780\n ret_from_fork+0x56d/0x700\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nThe problem arises due to the rfkill_block work is not cancelled when wiphy\nis being unregistered. In order to fix the issue cancel the corresponding\nwork in wiphy_unregister().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
}
],
"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 vulnerability is triggered through WiFi driver device lifecycle operations (device registration/removal and rfkill state changes), requiring local system access. Not remotely reachable through WiFi frames \u2014 it\u0027s a driver management race condition.\nAC:L - The attacker controls both sides of the race \u2014 device insertion triggers rfkill hardware state changes, and device removal triggers wiphy_unregister(). A crafted USB WiFi device can reliably trigger both events in the needed sequence.\nPR:L - A local user with access to USB ports or device management interfaces can trigger device attachment/removal. No root/CAP_NET_ADMIN is needed to plug in a USB WiFi device on shared workstations.\nUI:N - No user interaction is required; the attacker triggers both the rfkill state change and the device unregistration autonomously.\nS:U - Standard kernel vulnerability \u2014 the impact remains within the same security authority (kernel space). No VM escape or sandbox boundary crossing.\nC:H - This is a use-after-free where the attacker can control freed heap contents through heap spraying, enabling arbitrary memory reads via the freed rdev structure.\nI:H - The UAF accesses freed memory that iterates a list and calls dev_close() on network devices. With heap spray, the attacker can redirect function pointers for arbitrary code execution in kernel context.\nA:H - The kernel crash is confirmed by the KASAN report showing a use-after-free read in cfg80211_shutdown_all_interfaces. Any UAF reliably causes kernel oops/panic."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:21:13.568Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/82a35356b5c1f75fe6a8a561db44e8d0e49da8f9"
},
{
"url": "https://git.kernel.org/stable/c/b2e9626a9d16b9bbbd06498c9e73c93be354dc7a"
},
{
"url": "https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940"
},
{
"url": "https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173"
},
{
"url": "https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449"
},
{
"url": "https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2"
},
{
"url": "https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5"
},
{
"url": "https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1"
}
],
"title": "wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23336",
"datePublished": "2026-03-25T10:27:26.061Z",
"dateReserved": "2026-01-13T15:37:45.997Z",
"dateUpdated": "2026-10-19T18:35:41.752Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
Loading…
Loading…
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.
Loading…
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.