{"id":"CVE-2026-93803","summary":"wifi: libipw: fix key index receive bound checks","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libipw: fix key index receive bound checks\n\nlibipw_rx() reads skb-\u003edata[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-\u003elen \u003e= 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.","modified":"2026-09-26T03:48:26.881393641Z","published":"2026-09-24T16:02:37.324Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93803.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/062840bdc9ee06169b3c371bf66711f1d7ec0bf4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/74ed3669f26803b1761c1f55403062bea44c3466"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c54b643e9a0936d038921c547736574fd7382cea"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93803.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93803"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b453872c35cfcbdbf5a794737817f7d4e7b1b579"},{"fixed":"062840bdc9ee06169b3c371bf66711f1d7ec0bf4"},{"fixed":"c54b643e9a0936d038921c547736574fd7382cea"},{"fixed":"74ed3669f26803b1761c1f55403062bea44c3466"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93803.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.14"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.53"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93803.json"}}],"schema_version":"1.9.0"}