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CVE-2026-93803

wifi: libipw: fix key index receive bound checks

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: libipw: fix key index receive bound checks libipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in both the software-decrypt key selection path and the hardware-decrypted IV/ICV strip path. In both places the existing guard only checks skb->len >= hdrlen + 3, which proves bytes up to hdrlen + 2 but not the byte at hdrlen + 3. Require hdrlen + 4 bytes before reading that item in both paths. This is a local source-boundary check only; it does not change the key index semantics.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From b453872c35cfcbdbf5a794737817f7d4e7b1b579 · fixed in bb18262c19feb690ddde58c70e3ad04bc6fe566e; From b453872c35cfcbdbf5a794737817f7d4e7b1b579 · fixed in 09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82; From b453872c35cfcbdbf5a794737817f7d4e7b1b579 · fixed in 2836a870f612a8a6d9e390d00fa2cf6c90aa5808; From b453872c35cfcbdbf5a794737817f7d4e7b1b579 · fixed in 0b61c465ea62063593bc9ac186871b69e58ae991; From b453872c35cfcbdbf5a794737817f7d4e7b1b579 · fixed in 062840bdc9ee06169b3c371bf66711f1d7ec0bf4; From b453872c35cfcbdbf5a794737817f7d4e7b1b579 · fixed in c54b643e9a0936d038921c547736574fd7382cea; From b453872c35cfcbdbf5a794737817f7d4e7b1b579 · fixed in 74ed3669f26803b1761c1f55403062bea44c3466

  • Linux Linux

    2.6.14

  • KernelLinux

    From 2.6.14 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53

References 7

git.kernel.org