{"id":"CVE-2026-98307","summary":"wifi: ath11k: cleanup arsta in ath11k_mac_peer_cleanup_all()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: cleanup arsta in ath11k_mac_peer_cleanup_all()\n\nWhen mac80211 removes a sta, it calls .sta_state() which in turn calls\nath11k_mac_station_remove(). In that function we clean up both peers &\narsta related resources.\n\nBut when the firmware crashes, ath11k calls ieee80211_restart_hw(), which\nassumes that all driver related resources are cleaned up beforehand. This\ncleanup is supposedly done by ath11k_mac_peer_cleanup_all() but does not\nin fact free arsta-\u003erx_stats / tx_stats.\n\nExtract the arsta cleanup from ath11k_mac_station_remove() into a\nnew ath11k_mac_station_cleanup() and call it from both there and\nath11k_mac_peer_cleanup_all().\n\nThis should handle kmemleaks reports like:\n\tunreferenced object 0xffffff801ae66400 (size 1024):\n\t  comm \"hostapd\", pid 1306, jiffies 4295011565\n\t  hex dump (first 32 bytes):\n\t    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n\t    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n\t  backtrace (crc d61c08ec):\n\t    kmemleak_alloc+0x3c/0x50\n\t    __kmalloc_cache_noprof+0x2b0/0x3e0\n\t    ath11k_mac_op_sta_state+0x1dc/0xb10\n\t    drv_sta_state+0xac/0x6f8\n\t    sta_info_insert_rcu+0x314/0x5e0\n\t    sta_info_insert+0x14/0x38\n\t    ieee80211_add_station+0x10c/0x1a0\n\t    nl80211_new_station+0x3e8/0x680\n\t    genl_family_rcv_msg_doit+0xc0/0x120\n\t    genl_rcv_msg+0x1b4/0x258\n\t    netlink_rcv_skb+0x4c/0x108\n\t    genl_rcv+0x38/0x60\n\t    netlink_unicast+0x190/0x278\n\t    netlink_sendmsg+0x15c/0x370\n\t    ____sys_sendmsg+0x120/0x290\n\t    ___sys_sendmsg+0x70/0xa0\n\nTested-on: QCN9074 hw1.0 PCI WLAN.HK.2.9.0.1-01977-QCAHKSWPL_SILICONZ-1","modified":"2026-10-07T02:47:30.444304676Z","published":"2026-10-06T08:46:04.301Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98307.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/57bc3cd46458eafa1c38e3044a61b7399cde7642"},{"type":"WEB","url":"https://git.kernel.org/stable/c/820b8cff81c796ba20573e04722ab62500713f97"},{"type":"WEB","url":"https://git.kernel.org/stable/c/be1d5e95ec499ed5ee9704aa27dd1407ccf0d0ac"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c4108dce0838ec7d38d782f76f9c007cfe2fff45"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98307.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98307"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d5c65159f2895379e11ca13f62feabe93278985d"},{"fixed":"c4108dce0838ec7d38d782f76f9c007cfe2fff45"},{"fixed":"57bc3cd46458eafa1c38e3044a61b7399cde7642"},{"fixed":"be1d5e95ec499ed5ee9704aa27dd1407ccf0d0ac"},{"fixed":"820b8cff81c796ba20573e04722ab62500713f97"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98307.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.6.0"},{"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-2026-98307.json"}}],"schema_version":"1.9.0"}