CVE-2026-46248

MediumCVSS 5.5

Published: 03/06/2026(UTC)Updated: 09/06/2026(UTC)Translated: 10/06/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.01%

2th percentile - higher than 2% of all known CVEs

Summary

A vulnerability has been identified in the Linux kernel within the wifi ath12k module, concerning improper link mapping management during failed arvif initialization in STA mode. This can lead to stale link mappings causing warnings in system logs when a new arvif is initialized with the same link ID.

Risk Assessment

Organizations may experience performance and stability issues in their wireless networks, potentially leading to communication disruptions and security concerns.

Recommendation

It is recommended to update the Linux kernel to a version that includes a fix for this vulnerability to ensure proper link mapping management in the ath12k module.

Original NVD description (English source)

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