All vulnerabilities
CVE-2026-93807

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

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6937b06d55b528e961feff8cc083b97ede622e02Also 6b6690ac5c35e803df14afdc44312d11e8a60893, 5207727e53fba1e3a6fce9b2c15b6b8b06c6438b and 3 moreCVE List
Published24 Sep 2026Updated 3 Oct 2026CVE List

What fixes it

  • 6937b06d55b528e961feff8cc083b97ede622e02LinuxCVE List
  • 6b6690ac5c35e803df14afdc44312d11e8a60893LinuxCVE List
  • 5207727e53fba1e3a6fce9b2c15b6b8b06c6438bLinuxCVE List
  • 5902e3c08c63d65724772f74d65b9fb032625dcaLinuxCVE List
  • 55b86ef6c2e68879ffd95203b011ef42a013ab88LinuxCVE List
  • 843fe9bc583b7686ca68312ac9319c9240a73c03LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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]

Text from CVE List

Affected versions 16

  • Linuxaffected: dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 6937b06d55b528e961feff8cc083b97ede622e02CVE List
  • Linuxaffected: dad0d04fa7ba41ce603a01e8e64967650303e9a2 before ebd7172f8c4edc232738ef50338fb773c6f6c208CVE List
  • Linuxaffected: dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 6b6690ac5c35e803df14afdc44312d11e8a60893CVE List
  • Linuxaffected: dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 5207727e53fba1e3a6fce9b2c15b6b8b06c6438bCVE List
  • Linuxaffected: dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 5902e3c08c63d65724772f74d65b9fb032625dcaCVE List
  • Linuxaffected: dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 55b86ef6c2e68879ffd95203b011ef42a013ab88CVE List
  • Linuxaffected: dad0d04fa7ba41ce603a01e8e64967650303e9a2 before 843fe9bc583b7686ca68312ac9319c9240a73c03CVE List
  • Linuxaffected: 3.15CVE List
  • Linuxunaffected: all versions before 3.15CVE List
  • Linuxunaffected: 5.10.271 through 5.10.*CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2CVE List

References 7