5.5

CVE-2025-21909

wifi: nl80211: reject cooked mode if it is set along with other flags

In the Linux kernel, the following vulnerability has been resolved:

wifi: nl80211: reject cooked mode if it is set along with other flags

It is possible to set both MONITOR_FLAG_COOK_FRAMES and MONITOR_FLAG_ACTIVE
flags simultaneously on the same monitor interface from the userspace. This
causes a sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit
set because the monitor interface is in the cooked state and it takes
precedence over all other states. When the interface is then being deleted
the kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing
that bit.

Fix this by rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with
other flags.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.26 < 5.4.291
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.235
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.179
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.131
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.83
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.19
Linux ≫ Linux Kernel Version >= 6.13 < 6.13.7
Linux ≫ Linux Kernel Version6.14 Updaterc1
Linux ≫ Linux Kernel Version6.14 Updaterc2
Linux ≫ Linux Kernel Version6.14 Updaterc3
Linux ≫ Linux Kernel Version6.14 Updaterc4
Linux ≫ Linux Kernel Version6.14 Updaterc5
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.047
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://git.kernel.org/stable/c/236f41ca728f23210b31ed2d1d8a6df575a4b2d6
Patch
https://git.kernel.org/stable/c/351eb7ac53ff1cd94d893c0c4534ced2f36ae7d7
Patch
https://git.kernel.org/stable/c/49f27f29446a5bfe633dd2cc0cfebd48a1a5e77f
Patch
https://git.kernel.org/stable/c/521e55c2b0d6028861ac0a2d06aa57bb0e3ac486
Patch
https://git.kernel.org/stable/c/5ea856d93794c4afa5542defd8c61f2708dc245a
Patch
https://git.kernel.org/stable/c/ac4860141300581d3e2f6c6dafa37220f7ea9f65
Patch
https://git.kernel.org/stable/c/cd1bdcb77fdc03c253137e55bae10551b3481461
Patch
https://git.kernel.org/stable/c/ebebbb0eded2ed9a1abfa31962f6fb699e6abce7
Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html