CVE-2026-93807

wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers

State: Published
Severity: Not scored
Published: Sep 24, 2026
Updated: Oct 3, 2026
Reserved: Sep 18, 2026

Description

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

wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers

rsi_hal_load_key() copies tx_mic_key and rx_mic_key from data[16] and data[24] whenever key data is present. Those offsets are only part of the 32-byte TKIP key layout. Shorter keys used by other ciphers, such as CCMP, do not provide those bytes, so the unconditional copies can read past the supplied key buffer.

Only copy the MIC keys for TKIP, and reject malformed TKIP keys that are shorter than the expected 32-byte layout.

[drop useless length check]

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 6937b06d55b528e961feff8cc083b97ede622e02Affected dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before ebd7172f8c4edc232738ef50338fb773c6f6c208Affected dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 6b6690ac5c35e803df14afdc44312d11e8a60893Affected dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 5207727e53fba1e3a6fce9b2c15b6b8b06c6438bAffected dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 5902e3c08c63d65724772f74d65b9fb032625dcaAffected dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 55b86ef6c2e68879ffd95203b011ef42a013ab88Affected dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 843fe9bc583b7686ca68312ac9319c9240a73c03Affected
LinuxLinux	3.15Affected before 3.15Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 6937b06d55b528e961feff8cc083b97ede622e02Affected
dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before ebd7172f8c4edc232738ef50338fb773c6f6c208Affected
dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 6b6690ac5c35e803df14afdc44312d11e8a60893Affected
dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 5207727e53fba1e3a6fce9b2c15b6b8b06c6438bAffected
dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 5902e3c08c63d65724772f74d65b9fb032625dcaAffected
dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 55b86ef6c2e68879ffd95203b011ef42a013ab88Affected
dad0d04fa7ba41ce603a01e8e64967650303e9a2 to before 843fe9bc583b7686ca68312ac9319c9240a73c03Affected

LinuxLinux

3.15Affected
before 3.15Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2 and laterNot affected

References

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