CVE-2023-53321

wifi: mac80211_hwsim: drop short frames

State: Published
Severity: 7.1 High
Published: Sep 16, 2025
Updated: Aug 5, 2026
Reserved: Sep 16, 2025

Description

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

wifi: mac80211_hwsim: drop short frames

While technically some control frames like ACK are shorter and end after Address 1, such frames shouldn't be forwarded through wmediumd or similar userspace, so require the full 3-address header to avoid accessing invalid memory if shorter frames are passed in.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H	Linux
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	05d610af3e71a782fa28a1351b687da982d208ee to before 3beb97bed860d95b14ad23578ce8ddaea62023dbAffected 05d610af3e71a782fa28a1351b687da982d208ee to before 672205c6f2d11978fcd7f0f336bb2c708e28874bAffected 05d610af3e71a782fa28a1351b687da982d208ee to before c64ee9dd335832d5e2ab0a8fc83a34ad4c729799Affected 05d610af3e71a782fa28a1351b687da982d208ee to before b9a175e3b250b0dc6e152988040aa5014e98e61eAffected 05d610af3e71a782fa28a1351b687da982d208ee to before 89a41ed7f21476301659ebd25ccb48a60791c1a7Affected 05d610af3e71a782fa28a1351b687da982d208ee to before fba360a047d5eeeb9d4b7c3a9b1c8308980ce9a6Affected
LinuxLinux	5.4Affected before 5.4Not affected 5.4.257 through 5.4.Not affected 5.10.197 through 5.10.Not affected 5.15.133 through 5.15.Not affected 6.1.55 through 6.1.Not affected 6.5.5 through 6.5.*Not affected 6.6 and laterNot affected

Product

Versions

LinuxLinux

05d610af3e71a782fa28a1351b687da982d208ee to before 3beb97bed860d95b14ad23578ce8ddaea62023dbAffected
05d610af3e71a782fa28a1351b687da982d208ee to before 672205c6f2d11978fcd7f0f336bb2c708e28874bAffected
05d610af3e71a782fa28a1351b687da982d208ee to before c64ee9dd335832d5e2ab0a8fc83a34ad4c729799Affected
05d610af3e71a782fa28a1351b687da982d208ee to before b9a175e3b250b0dc6e152988040aa5014e98e61eAffected
05d610af3e71a782fa28a1351b687da982d208ee to before 89a41ed7f21476301659ebd25ccb48a60791c1a7Affected
05d610af3e71a782fa28a1351b687da982d208ee to before fba360a047d5eeeb9d4b7c3a9b1c8308980ce9a6Affected

LinuxLinux

5.4Affected
before 5.4Not affected
5.4.257 through 5.4.*Not affected
5.10.197 through 5.10.*Not affected
5.15.133 through 5.15.*Not affected
6.1.55 through 6.1.*Not affected
6.5.5 through 6.5.*Not affected
6.6 and laterNot affected

References

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