{"id":"CVE-2026-93803","state":"PUBLISHED","title":"wifi: libipw: fix key index receive bound checks","description":"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 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.","publishedAt":"2026-09-24T16:02:37.324Z","updatedAt":"2026-10-03T10:57:36.957Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"bb18262c19feb690ddde58c70e3ad04bc6fe566e","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"2836a870f612a8a6d9e390d00fa2cf6c90aa5808","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"0b61c465ea62063593bc9ac186871b69e58ae991","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"062840bdc9ee06169b3c371bf66711f1d7ec0bf4","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"c54b643e9a0936d038921c547736574fd7382cea","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"74ed3669f26803b1761c1f55403062bea44c3466","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/intel/ipw2x00/libipw_rx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.14","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/intel/ipw2x00/libipw_rx.c"]}],"references":["https://git.kernel.org/stable/c/bb18262c19feb690ddde58c70e3ad04bc6fe566e","https://git.kernel.org/stable/c/09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82","https://git.kernel.org/stable/c/2836a870f612a8a6d9e390d00fa2cf6c90aa5808","https://git.kernel.org/stable/c/0b61c465ea62063593bc9ac186871b69e58ae991","https://git.kernel.org/stable/c/062840bdc9ee06169b3c371bf66711f1d7ec0bf4","https://git.kernel.org/stable/c/c54b643e9a0936d038921c547736574fd7382cea","https://git.kernel.org/stable/c/74ed3669f26803b1761c1f55403062bea44c3466"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93803.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93803","state":"PUBLISHED","datePublished":"2026-09-24T16:02:37.324Z","dateUpdated":"2026-10-03T10:57:36.957Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-18T17:59:28.789Z"},"containers":{"cna":{"title":"wifi: libipw: fix key index receive bound checks","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"bb18262c19feb690ddde58c70e3ad04bc6fe566e","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"2836a870f612a8a6d9e390d00fa2cf6c90aa5808","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"0b61c465ea62063593bc9ac186871b69e58ae991","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"062840bdc9ee06169b3c371bf66711f1d7ec0bf4","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"c54b643e9a0936d038921c547736574fd7382cea","versionType":"git"},{"version":"b453872c35cfcbdbf5a794737817f7d4e7b1b579","status":"affected","lessThan":"74ed3669f26803b1761c1f55403062bea44c3466","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/intel/ipw2x00/libipw_rx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.14","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/intel/ipw2x00/libipw_rx.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/bb18262c19feb690ddde58c70e3ad04bc6fe566e"},{"url":"https://git.kernel.org/stable/c/09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82"},{"url":"https://git.kernel.org/stable/c/2836a870f612a8a6d9e390d00fa2cf6c90aa5808"},{"url":"https://git.kernel.org/stable/c/0b61c465ea62063593bc9ac186871b69e58ae991"},{"url":"https://git.kernel.org/stable/c/062840bdc9ee06169b3c371bf66711f1d7ec0bf4"},{"url":"https://git.kernel.org/stable/c/c54b643e9a0936d038921c547736574fd7382cea"},{"url":"https://git.kernel.org/stable/c/74ed3669f26803b1761c1f55403062bea44c3466"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-03T10:57:36.957Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.14","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}