{"id":"CVE-2026-98345","state":"PUBLISHED","title":"wifi: cfg80211: check IP header size in cfg80211_classify8021d()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: check IP header size in cfg80211_classify8021d()\n\nA frame that looks like IP can be transmitted, but be too short, so\nthe DS field is read incorrectly:\n\n  BUG: KMSAN: uninit-value in cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027\n   cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027\n   ieee80211_select_queue+0x37a/0x9e0 net/mac80211/wme.c:180\n   __ieee80211_subif_start_xmit+0x60f/0x1d90 net/mac80211/tx.c:4304\n   ieee80211_subif_start_xmit+0xa8/0x6d0 net/mac80211/tx.c:4538\n   ...\n   packet_sendmsg+0x9173/0xa2a0 net/packet/af_packet.c:3108\n\nUse skb_header_pointer() like the MPLS case.","publishedAt":"2026-10-06T08:46:34.719Z","updatedAt":"2026-10-19T09:17:56.221Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"18d5547327c202cda33ad2bbd203220c2c62c8a7","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"12c0abd4d1c1b04a7663d04ba85268bc9ad9c017","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"f33ad4e2f846e55cf4637419268f093ac9f1a765","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"a2cdb4a675ca04c4ac8cc962848082d8ce065008","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"65893c8d28f239c7ddad5a83683be193a9133e9b","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"48b2c5c628b09cf36cbeca53e0432fc2a7518be7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/wireless/util.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.31","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.31","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":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/wireless/util.c"]}],"references":["https://git.kernel.org/stable/c/18d5547327c202cda33ad2bbd203220c2c62c8a7","https://git.kernel.org/stable/c/3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734","https://git.kernel.org/stable/c/c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7","https://git.kernel.org/stable/c/12c0abd4d1c1b04a7663d04ba85268bc9ad9c017","https://git.kernel.org/stable/c/f33ad4e2f846e55cf4637419268f093ac9f1a765","https://git.kernel.org/stable/c/a2cdb4a675ca04c4ac8cc962848082d8ce065008","https://git.kernel.org/stable/c/65893c8d28f239c7ddad5a83683be193a9133e9b","https://git.kernel.org/stable/c/48b2c5c628b09cf36cbeca53e0432fc2a7518be7"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98345.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98345","state":"PUBLISHED","datePublished":"2026-10-06T08:46:34.719Z","dateUpdated":"2026-10-19T09:17:56.221Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.343Z"},"containers":{"cna":{"title":"wifi: cfg80211: check IP header size in cfg80211_classify8021d()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: check IP header size in cfg80211_classify8021d()\n\nA frame that looks like IP can be transmitted, but be too short, so\nthe DS field is read incorrectly:\n\n  BUG: KMSAN: uninit-value in cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027\n   cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027\n   ieee80211_select_queue+0x37a/0x9e0 net/mac80211/wme.c:180\n   __ieee80211_subif_start_xmit+0x60f/0x1d90 net/mac80211/tx.c:4304\n   ieee80211_subif_start_xmit+0xa8/0x6d0 net/mac80211/tx.c:4538\n   ...\n   packet_sendmsg+0x9173/0xa2a0 net/packet/af_packet.c:3108\n\nUse skb_header_pointer() like the MPLS case."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"18d5547327c202cda33ad2bbd203220c2c62c8a7","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"12c0abd4d1c1b04a7663d04ba85268bc9ad9c017","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"f33ad4e2f846e55cf4637419268f093ac9f1a765","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"a2cdb4a675ca04c4ac8cc962848082d8ce065008","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"65893c8d28f239c7ddad5a83683be193a9133e9b","versionType":"git"},{"version":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4","status":"affected","lessThan":"48b2c5c628b09cf36cbeca53e0432fc2a7518be7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/wireless/util.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.31","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.31","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":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/wireless/util.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/18d5547327c202cda33ad2bbd203220c2c62c8a7"},{"url":"https://git.kernel.org/stable/c/3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734"},{"url":"https://git.kernel.org/stable/c/c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7"},{"url":"https://git.kernel.org/stable/c/12c0abd4d1c1b04a7663d04ba85268bc9ad9c017"},{"url":"https://git.kernel.org/stable/c/f33ad4e2f846e55cf4637419268f093ac9f1a765"},{"url":"https://git.kernel.org/stable/c/a2cdb4a675ca04c4ac8cc962848082d8ce065008"},{"url":"https://git.kernel.org/stable/c/65893c8d28f239c7ddad5a83683be193a9133e9b"},{"url":"https://git.kernel.org/stable/c/48b2c5c628b09cf36cbeca53e0432fc2a7518be7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:17:56.221Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.18.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"7.2.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}