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CVE

DEBIAN-CVE-2026-23336

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...
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CVE

DEBIAN-CVE-2026-23336

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...

In the Linux kernel, the following vulnerability has been resolved:  wifi: cfg80211: cancel rfkillblock work in wiphyunregister()  There is a use-after-free error in cfg80211shutdownallinterfaces found by syzkaller:  BUG: KASAN: use-after-free in cfg80211shutdownallinterfaces+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 cfg80211rfkillblockwork Call Trace:  <TASK>  dumpstacklvl+0x116/0x1f0  printreport+0xcd/0x630  kasanreport+0xe0/0x110  cfg80211shutdownallinterfaces+0x213/0x220  cfg80211rfkillblockwork+0x1e/0x30  processonework+0x9cf/0x1b70  workerthread+0x6c8/0xf10  kthread+0x3c5/0x780  retfromfork+0x56d/0x700  retfromforkasm+0x1a/0x30  </TASK>  The problem arises due to the rfkillblock 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
-
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://security-tracker.debian.org/tracker/CVE-2026-23336

Severity

7.8

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.8
EPSS Probability
0%
EPSS Percentile
0%
Introduced Version
0
Fix Available
5.10.257-1,6.1.170-1,6.12.85-1,6.19.8-1,6.1.170-1~deb11u1

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