What’s Vulnerable › Vulnerabilities

CVE-2023-53257: wifi: mac80211: check S1G action frame size

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-15 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: check S1G action frame size Before checking the action code, check that it even exists in the frame.

Affected products

• Linux kernel: before 5.15.133; from 5.16 before 6.1.55; from 6.2 before 6.5.5 — fixed in 5.15.133, 6.1.55, 6.5.5

How to fix

Upgrade to a fixed version: Linux kernel 5.15.133, 6.1.55, 6.5.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/19e4a47ee74718a22e963e8a647c8c3bfe8bb05c
• https://git.kernel.org/stable/c/5e030a2509be72b452b6f4a800786d43229414db
• https://git.kernel.org/stable/c/7ae7a1378a119780c8c17a6b5fc03011c3bb7029
• https://git.kernel.org/stable/c/fedd9377dd9c71a950d432fbe1628eebfbed70a1

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