CVE-2026-98185

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.

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EPSS — Exploit Prediction

0.0018

Probability of exploitation

0.07%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/25217c5f6ce0bf3004f80c129464cd35fe9a420f https://git.kernel.org/stable/c/3687d7d48070838cc2953431b3a27717cab0aaf6 https://git.kernel.org/stable/c/48312f0085aa1577d6d41af2a079b34de17c1a57 https://git.kernel.org/stable/c/7106ad8b74f50cca1ef36131f327d2c78f556daa https://git.kernel.org/stable/c/9cff2f39ed38a32070b08364c4c9346e85b8f9ec https://git.kernel.org/stable/c/c4943323fda22ef27bb6479b9d328ae48c63f64c https://git.kernel.org/stable/c/cb0008480ed7d5cf76f3ad9668a91bbb7d0b4417 https://git.kernel.org/stable/c/dccf5ecaad4d8d43c545921f20328e8f91af8698

Frequently Asked Questions

What is CVE-2026-98185? +

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.

How do I check if I'm vulnerable to CVE-2026-98185? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.