CVE-2026-46248
🔶 mediumSummary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: clear stale link mapping of ahvif->links_map When an arvif is initialized in non-AP STA mode but MLO connection preparation fails before the arvif is created (arvif->is_created remains false), the error path attempts to delete all links. However, link deletion only executes when arvif->is_created is true. As a result, ahvif retains a stale entry of arvif that is initialized but not created. When a new arvif is i
Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: clear stale link mapping of ahvif->links_map
When an arvif is initialized in non-AP STA mode but MLO connection
preparation fails before the arvif is created
(arvif->is_created remains false), the error path attempts to delete all
links. However, link deletion only executes when arvif->is_created is true.
As a result, ahvif retains a stale entry of arvif that is initialized but
not created.
When a new arvif is initialized with the same link id, this stale mapping
triggers the following WARN_ON.
WARNING: drivers/net/wireless/ath/ath12k/mac.c:4271 at ath12k_mac_op_change_vif_links+0x140/0x180 [ath12k], CPU#3: wpa_supplicant/275
Call trace:
ath12k_mac_op_change_vif_links+0x140/0x180 [ath12k] (P)
drv_change_vif_links+0xbc/0x1a4 [mac80211]
ieee80211_vif_update_links+0x54c/0x6a0 [mac80211]
ieee80211_vif_set_links+0x40/0x70 [mac80211]
ieee80211_prep_connection+0x84/0x450 [mac80211]
ieee80211_mgd_auth+0x200/0x480 [mac80211]
ieee80211_auth+0x14/0x20 [mac80211]
cfg80211_mlme_auth+0x90/0xf0 [cfg80211]
nl80211_authenticate+0x32c/0x380 [cfg80211]
genl_family_rcv_msg_doit+0xc8/0x134
Fix this issue by unassigning the link vif and clearing ahvif->links_map
if arvif is only initialized but not created.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1
📊 Relative Risk Intelligence
This CVE is Lower Risk - more severe than 32.6% of all 326,604 vulnerabilities in our database.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H