High 8.1Published May 20, 2025

CVE-2025-37973wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation

Updated under an hour ago (Oct 27, 2026, 2:50 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation Currently during the multi-link element defragmentation process, the multi-link element length added to the total IEs length when calculating the length of remaining IEs after the multi-link element in cfg80211_defrag_mle(). This could lead to out-of-bounds access if the multi-link element or its corresponding fragment elements are the last elements in the IEs buffer. To address this issue, correctly calculate the remaining IEs length by deducting the multi-link element end offset from total IEs end offset.

CVSS: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	2481b5da9c6b2ee1fde55a1c29eb2ca377145a10 builds before 73dde269a1a43e6b1aa92eba13ad2df58bfdd38e; from 2481b5da9c6b2ee1fde55a1c29eb2ca377145a10 before 9423f6da825172b8dc60d4688ed3d147291c3be9; from 2481b5da9c6b2ee1fde55a1c29eb2ca377145a10 before e1c6d0c6199bd5f4cfc7a66ae7032b6e805f904d; 2481b5da9c6b2ee1fde55a1c29eb2ca377145a10 builds before 023c1f2f0609218103cbcb48e0104b144d4a16dc	CNA record
linux linux_kernel linux:linux_kernel	from 6.5 before 6.6.91; from 6.7 before 6.12.29; from 6.13 before 6.14.7; 6.15; 6.15; 6.15; 6.15; 6.15	NVD

References

References

https://git.kernel.org/stable/c/73dde269a1a43e6b1aa92eba13ad2df58bfdd38e	patch
https://git.kernel.org/stable/c/9423f6da825172b8dc60d4688ed3d147291c3be9	patch
https://git.kernel.org/stable/c/e1c6d0c6199bd5f4cfc7a66ae7032b6e805f904d	patch
https://git.kernel.org/stable/c/023c1f2f0609218103cbcb48e0104b144d4a16dc	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.