Medium 5.5Published Jun 3, 2026

CVE-2026-46248wifi: ath12k: clear stale link mapping of ahvif->links_map

Updated under an hour ago (Oct 27, 2026, 12:40 AM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 3, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 81e4be30544ee7e8da80e9aae7acd69d3be6d05a before da289440f04c93048d82d293b180f1cacdfee2d9; from 81e4be30544ee7e8da80e9aae7acd69d3be6d05a before acd8319e834be6790e449701cb6df0f636801977; 81e4be30544ee7e8da80e9aae7acd69d3be6d05a builds before 2c1ba9c2adf0fda96eaaebd8799268a7506a8fc9	CNA record
linux linux_kernel linux:linux_kernel	from 6.15 before 6.18.14; from 6.19 before 6.19.4	NVD

References

References

https://git.kernel.org/stable/c/da289440f04c93048d82d293b180f1cacdfee2d9	patch
https://git.kernel.org/stable/c/acd8319e834be6790e449701cb6df0f636801977	patch
https://git.kernel.org/stable/c/2c1ba9c2adf0fda96eaaebd8799268a7506a8fc9	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.