{"id":"CVE-2026-93802","state":"PUBLISHED","title":"wifi: rsi: validate beacon length before fixed buffer copy","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rsi: validate beacon length before fixed buffer copy\n\nrsi_prepare_beacon() copies the mac80211 beacon frame after\nFRAME_DESC_SZ into a management skb whose usable tailroom may be smaller\nthan MAX_MGMT_PKT_SIZE after alignment.\n\nValidate the beacon length against the actual tailroom before the copy\nand skb_put(). Leave ownership of the management skb with the caller on\nerror, matching the existing rsi_send_beacon() cleanup path.","publishedAt":"2026-09-24T16:02:36.341Z","updatedAt":"2026-10-03T10:57:35.833Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"795ba65f46fe44061f1195951c122cc8ec685d44","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"66a964432b2758a4cf69962366e37581d6e70632","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"7f99742c3c2801f8033d8b7a0a58254d7f24fb1e","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"f08d7f3c916335a0e539f1c45c130615967fac47","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"87710ad633ce4588aec88611d0d0745eb33a6991","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"266f195d5a14eec6c482fd09fbc924584c3371a7","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"8ecdeb8b8a33b22c597299043c0dcfce50beb9ea","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/rsi/rsi_91x_hal.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","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/rsi/rsi_91x_hal.c"]}],"references":["https://git.kernel.org/stable/c/795ba65f46fe44061f1195951c122cc8ec685d44","https://git.kernel.org/stable/c/66a964432b2758a4cf69962366e37581d6e70632","https://git.kernel.org/stable/c/7f99742c3c2801f8033d8b7a0a58254d7f24fb1e","https://git.kernel.org/stable/c/f08d7f3c916335a0e539f1c45c130615967fac47","https://git.kernel.org/stable/c/87710ad633ce4588aec88611d0d0745eb33a6991","https://git.kernel.org/stable/c/266f195d5a14eec6c482fd09fbc924584c3371a7","https://git.kernel.org/stable/c/8ecdeb8b8a33b22c597299043c0dcfce50beb9ea"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93802.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93802","state":"PUBLISHED","datePublished":"2026-09-24T16:02:36.341Z","dateUpdated":"2026-10-03T10:57:35.833Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-18T17:59:28.789Z"},"containers":{"cna":{"title":"wifi: rsi: validate beacon length before fixed buffer copy","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rsi: validate beacon length before fixed buffer copy\n\nrsi_prepare_beacon() copies the mac80211 beacon frame after\nFRAME_DESC_SZ into a management skb whose usable tailroom may be smaller\nthan MAX_MGMT_PKT_SIZE after alignment.\n\nValidate the beacon length against the actual tailroom before the copy\nand skb_put(). Leave ownership of the management skb with the caller on\nerror, matching the existing rsi_send_beacon() cleanup path."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"795ba65f46fe44061f1195951c122cc8ec685d44","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"66a964432b2758a4cf69962366e37581d6e70632","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"7f99742c3c2801f8033d8b7a0a58254d7f24fb1e","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"f08d7f3c916335a0e539f1c45c130615967fac47","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"87710ad633ce4588aec88611d0d0745eb33a6991","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"266f195d5a14eec6c482fd09fbc924584c3371a7","versionType":"git"},{"version":"d26a9559403c7c3ec3b430f5825bc22c3d40abdb","status":"affected","lessThan":"8ecdeb8b8a33b22c597299043c0dcfce50beb9ea","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/rsi/rsi_91x_hal.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","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/rsi/rsi_91x_hal.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/795ba65f46fe44061f1195951c122cc8ec685d44"},{"url":"https://git.kernel.org/stable/c/66a964432b2758a4cf69962366e37581d6e70632"},{"url":"https://git.kernel.org/stable/c/7f99742c3c2801f8033d8b7a0a58254d7f24fb1e"},{"url":"https://git.kernel.org/stable/c/f08d7f3c916335a0e539f1c45c130615967fac47"},{"url":"https://git.kernel.org/stable/c/87710ad633ce4588aec88611d0d0745eb33a6991"},{"url":"https://git.kernel.org/stable/c/266f195d5a14eec6c482fd09fbc924584c3371a7"},{"url":"https://git.kernel.org/stable/c/8ecdeb8b8a33b22c597299043c0dcfce50beb9ea"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-03T10:57:35.833Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}