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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-23336 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
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NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/57e39fe8da573435fa35975f414f4dc17d9f8449 kernel.org Patch 
https://git.kernel.org/stable/c/584279ad9ff1e8e7c5494b9fce286201f7d1f9e2 kernel.org Patch 
https://git.kernel.org/stable/c/767d23ade706d5fa51c36168e92a9c5533c351a1 kernel.org Patch 
https://git.kernel.org/stable/c/82a35356b5c1f75fe6a8a561db44e8d0e49da8f9 kernel.org Patch 
https://git.kernel.org/stable/c/b2e9626a9d16b9bbbd06498c9e73c93be354dc7a kernel.org Patch 
https://git.kernel.org/stable/c/cd2f52944c7b95dcdfe0d87f385a2d96458a3ae5 kernel.org Patch 
https://git.kernel.org/stable/c/eeea8da43ab86ac0a6b9cec225eec91564346940 kernel.org Patch 
https://git.kernel.org/stable/c/fa18639deab4a3662d543200c5bfc29bf4e23173 kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-23336
NVD Published Date:
03/25/2026
NVD Last Modified:
04/23/2026
Source:
kernel.org