{"id":"CVE-2026-93803","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libipw: fix key index receive bound checks\n\nlibipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in\nboth the software-decrypt key selection path a…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libipw: fix key index receive bound checks\n\nlibipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in\nboth the software-decrypt key selection path a…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 062840bdc9ee06169b3c371bf66711f1d7ec0bf4","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c54b643e9a0936d038921c547736574fd7382cea","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 74ed3669f26803b1761c1f55403062bea44c3466","Linux < 6.12.111","Linux < 6.18.53","Linux (all versions)"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T17:17:13.240","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93803","references":[{"url":"https://git.kernel.org/stable/c/062840bdc9ee06169b3c371bf66711f1d7ec0bf4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/74ed3669f26803b1761c1f55403062bea44c3466","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c54b643e9a0936d038921c547736574fd7382cea","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-24T16:47:15.897Z","slug":"CVE-2026-93803","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libipw: fix key index receive bound checks\n\nlibipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in\nboth the software-decrypt key selection path and the hardware-decrypted\nIV/ICV strip path. In both places the existing guard only checks\nskb->len >= hdrlen + 3, which proves bytes up to hdrlen + 2 but not the\nbyte at hdrlen + 3.\n\nRequire hdrlen + 4 bytes before reading that item in both paths. This is\na local source-boundary check only; it does not change the key index\nsemantics.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}