All vulnerabilities
CVE-2026-98185

Linux: wifi: mwifiex: validate scan response extents

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)0.18%Chance of exploitation activity in the next 30 days, higher than 7% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in25217c5f6ce0bf3004f80c129464cd35fe9a420fAlso 48312f0085aa1577d6d41af2a079b34de17c1a57, 9cff2f39ed38a32070b08364c4c9346e85b8f9ec and 2 moreCVE List
Published6 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 25217c5f6ce0bf3004f80c129464cd35fe9a420fLinuxCVE List
  • 48312f0085aa1577d6d41af2a079b34de17c1a57LinuxCVE List
  • 9cff2f39ed38a32070b08364c4c9346e85b8f9ecLinuxCVE List
  • 7106ad8b74f50cca1ef36131f327d2c78f556daaLinuxCVE List
  • 3687d7d48070838cc2953431b3a27717cab0aaf6LinuxCVE 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: mwifiex: validate scan response extents

mwifiex_ret_802_11_scan() subtracts the fixed response fields and the firmware-provided BSS length from resp->size without first proving that either extent fits. A short response or oversized BSS length can therefore underflow tlv_buf_size and make the TLV parser walk beyond the command response.

Compute the fixed extent from the selected normal or background scan response. Validate that the fixed fields and BSS data fit before deriving the TLV extent and entering the parser.

Text from CVE List

Affected versions 18

  • Linuxaffected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e before 25217c5f6ce0bf3004f80c129464cd35fe9a420fCVE List
  • Linuxaffected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e before 48312f0085aa1577d6d41af2a079b34de17c1a57CVE List
  • Linuxaffected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e before dccf5ecaad4d8d43c545921f20328e8f91af8698CVE List
  • Linuxaffected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e before c4943323fda22ef27bb6479b9d328ae48c63f64cCVE List
  • Linuxaffected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e before cb0008480ed7d5cf76f3ad9668a91bbb7d0b4417CVE List
  • Linuxaffected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e before 9cff2f39ed38a32070b08364c4c9346e85b8f9ecCVE List
  • Linuxaffected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e before 7106ad8b74f50cca1ef36131f327d2c78f556daaCVE List
  • Linuxaffected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e before 3687d7d48070838cc2953431b3a27717cab0aaf6CVE List
  • Linuxaffected: 3.0CVE List
  • Linuxunaffected: all versions before 3.0CVE 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: 6.12.112 through 6.12.*CVE List
  • Linuxunaffected: 6.18.54 through 6.18.*CVE List
  • Linuxunaffected: 7.2.8 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 8