{"id":"CVE-2026-46248","summary":"wifi: ath12k: clear stale link mapping of ahvif-\u003elinks_map","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: clear stale link mapping of ahvif-\u003elinks_map\n\nWhen an arvif is initialized in non-AP STA mode but MLO connection\npreparation fails before the arvif is created\n(arvif-\u003eis_created remains false), the error path attempts to delete all\nlinks. However, link deletion only executes when arvif-\u003eis_created is true.\nAs a result, ahvif retains a stale entry of arvif that is initialized but\nnot created.\n\nWhen a new arvif is initialized with the same link id, this stale mapping\ntriggers the following WARN_ON.\n\nWARNING: drivers/net/wireless/ath/ath12k/mac.c:4271 at ath12k_mac_op_change_vif_links+0x140/0x180 [ath12k], CPU#3: wpa_supplicant/275\n\nCall trace:\n ath12k_mac_op_change_vif_links+0x140/0x180 [ath12k] (P)\n drv_change_vif_links+0xbc/0x1a4 [mac80211]\n ieee80211_vif_update_links+0x54c/0x6a0 [mac80211]\n ieee80211_vif_set_links+0x40/0x70 [mac80211]\n ieee80211_prep_connection+0x84/0x450 [mac80211]\n ieee80211_mgd_auth+0x200/0x480 [mac80211]\n ieee80211_auth+0x14/0x20 [mac80211]\n cfg80211_mlme_auth+0x90/0xf0 [cfg80211]\n nl80211_authenticate+0x32c/0x380 [cfg80211]\n genl_family_rcv_msg_doit+0xc8/0x134\n\nFix this issue by unassigning the link vif and clearing ahvif-\u003elinks_map\nif arvif is only initialized but not created.\n\nTested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1","modified":"2026-07-08T08:13:39.558491971Z","published":"2026-06-03T15:49:43.934Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46248.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2c1ba9c2adf0fda96eaaebd8799268a7506a8fc9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/acd8319e834be6790e449701cb6df0f636801977"},{"type":"WEB","url":"https://git.kernel.org/stable/c/da289440f04c93048d82d293b180f1cacdfee2d9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46248.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46248"},{"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":"81e4be30544ee7e8da80e9aae7acd69d3be6d05a"},{"fixed":"da289440f04c93048d82d293b180f1cacdfee2d9"},{"fixed":"acd8319e834be6790e449701cb6df0f636801977"},{"fixed":"2c1ba9c2adf0fda96eaaebd8799268a7506a8fc9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46248.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.18.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46248.json"}}],"schema_version":"1.7.5"}