{"id":"CVE-2026-98345","summary":"wifi: cfg80211: check IP header size in cfg80211_classify8021d()","details":"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.","modified":"2026-10-08T02:52:58.023791871Z","published":"2026-10-06T08:46:34.719Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98345.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/12c0abd4d1c1b04a7663d04ba85268bc9ad9c017"},{"type":"WEB","url":"https://git.kernel.org/stable/c/18d5547327c202cda33ad2bbd203220c2c62c8a7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734"},{"type":"WEB","url":"https://git.kernel.org/stable/c/48b2c5c628b09cf36cbeca53e0432fc2a7518be7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65893c8d28f239c7ddad5a83683be193a9133e9b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a2cdb4a675ca04c4ac8cc962848082d8ce065008"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f33ad4e2f846e55cf4637419268f093ac9f1a765"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98345.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98345"},{"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":"e31a16d6f64ef0e324c6f54d5112703c3f13a9c4"},{"fixed":"18d5547327c202cda33ad2bbd203220c2c62c8a7"},{"fixed":"3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734"},{"fixed":"c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7"},{"fixed":"12c0abd4d1c1b04a7663d04ba85268bc9ad9c017"},{"fixed":"f33ad4e2f846e55cf4637419268f093ac9f1a765"},{"fixed":"a2cdb4a675ca04c4ac8cc962848082d8ce065008"},{"fixed":"65893c8d28f239c7ddad5a83683be193a9133e9b"},{"fixed":"48b2c5c628b09cf36cbeca53e0432fc2a7518be7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98345.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.31"},{"fixed":"5.10.271"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98345.json"}}],"schema_version":"1.9.0"}