CVE-2026-98185

wifi: mwifiex: validate scan response extents

State: Published
Severity: Not scored
Published: Oct 6, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 25217c5f6ce0bf3004f80c129464cd35fe9a420fAffected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 48312f0085aa1577d6d41af2a079b34de17c1a57Affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before dccf5ecaad4d8d43c545921f20328e8f91af8698Affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before c4943323fda22ef27bb6479b9d328ae48c63f64cAffected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before cb0008480ed7d5cf76f3ad9668a91bbb7d0b4417Affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 9cff2f39ed38a32070b08364c4c9346e85b8f9ecAffected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 7106ad8b74f50cca1ef36131f327d2c78f556daaAffected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 3687d7d48070838cc2953431b3a27717cab0aaf6Affected
LinuxLinux	3.0Affected before 3.0Not 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 6.12.112 through 6.12.Not affected 6.18.54 through 6.18.Not affected 7.2.8 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 25217c5f6ce0bf3004f80c129464cd35fe9a420fAffected
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 48312f0085aa1577d6d41af2a079b34de17c1a57Affected
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before dccf5ecaad4d8d43c545921f20328e8f91af8698Affected
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before c4943323fda22ef27bb6479b9d328ae48c63f64cAffected
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before cb0008480ed7d5cf76f3ad9668a91bbb7d0b4417Affected
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 9cff2f39ed38a32070b08364c4c9346e85b8f9ecAffected
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 7106ad8b74f50cca1ef36131f327d2c78f556daaAffected
5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e to before 3687d7d48070838cc2953431b3a27717cab0aaf6Affected

LinuxLinux

3.0Affected
before 3.0Not 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
6.12.112 through 6.12.*Not affected
6.18.54 through 6.18.*Not affected
7.2.8 through 7.2.*Not affected
7.3 and laterNot affected

References

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