CVE-2026-93807wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers
Updated under an hour ago ()
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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]
- CVSS
- Not yet scored
- 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
- Received
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 6937b06d55b528e961feff8cc083b97ede622e02; from dad0d04fa7ba41ce603a01e8e64967650303e9a2 before ebd7172f8c4edc232738ef50338fb773c6f6c208; from dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 6b6690ac5c35e803df14afdc44312d11e8a60893; from dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 5207727e53fba1e3a6fce9b2c15b6b8b06c6438b; from dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 5902e3c08c63d65724772f74d65b9fb032625dca; from dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 55b86ef6c2e68879ffd95203b011ef42a013ab88; from dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 843fe9bc583b7686ca68312ac9319c9240a73c03 | CNA record |
References
- https://git.kernel.org/stable/c/6937b06d55b528e961feff8cc083b97ede622e02
- https://git.kernel.org/stable/c/ebd7172f8c4edc232738ef50338fb773c6f6c208
- https://git.kernel.org/stable/c/6b6690ac5c35e803df14afdc44312d11e8a60893
- https://git.kernel.org/stable/c/5207727e53fba1e3a6fce9b2c15b6b8b06c6438b
- https://git.kernel.org/stable/c/5902e3c08c63d65724772f74d65b9fb032625dca
- https://git.kernel.org/stable/c/55b86ef6c2e68879ffd95203b011ef42a013ab88
- https://git.kernel.org/stable/c/843fe9bc583b7686ca68312ac9319c9240a73c03
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.