Title: Linux, Description: En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:

wifi: ath12k: limpiar el mapeo de enlace obsoleto de ahvif->links_map

Cuando un arvif es inicializado en modo STA no-AP pero la preparación de la conexión MLO falla antes de que el arvif sea creado (arvif->is_created permanece falso), la ruta de error intenta eliminar todos los enlaces. Sin embargo, la eliminación de enlaces solo se ejecuta cuando arvif->is_created es verdadero. Como resultado, ahvif retiene una entrada obsoleta de arvif que está inicializado pero no creado.

Cuando un nuevo arvif es inicializado con el mismo id de enlace, este mapeo obsoleto dispara el siguiente WARN_ON.

ADVERTENCIA: drivers/net/wireless/ath/ath12k/mac.c:4271 en ath12k_mac_op_change_vif_links+0x140/0x180 [ath12k], CPU#3: wpa_supplicant/275

Traza de llamada:
 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

Solucione este problema desasignando el vif de enlace y limpiando ahvif->links_map si arvif solo está inicializado pero no creado.

Probado en: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/ath/ath12k/mac.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"81e4be30544ee7e8da80e9aae7acd69d3be6d05a","lessThan":"da289440f04c93048d82d293b180f1cacdfee2d9","versionType":"git","status":"affected"},{"version":"81e4be30544ee7e8da80e9aae7acd69d3be6d05a","lessThan":"acd8319e834be6790e449701cb6df0f636801977","versionType":"git","status":"affected"},{"version":"81e4be30544ee7e8da80e9aae7acd69d3be6d05a","lessThan":"2c1ba9c2adf0fda96eaaebd8799268a7506a8fc9","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/ath/ath12k/mac.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"6.15","status":"affected"},{"version":"0","lessThan":"6.15","versionType":"semver","status":"unaffected"},{"version":"6.18.14","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"6.19.4","lessThanOrEqual":"6.19.*","versionType":"semver","status":"unaffected"},{"version":"7.0","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD-CWE-noinfo

OR
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.4
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.15 up to (excluding) 6.18.14

kernel.org: https://git.kernel.org/stable/c/2c1ba9c2adf0fda96eaaebd8799268a7506a8fc9 Types: Patch

kernel.org: https://git.kernel.org/stable/c/acd8319e834be6790e449701cb6df0f636801977 Types: Patch

kernel.org: https://git.kernel.org/stable/c/da289440f04c93048d82d293b180f1cacdfee2d9 Types: Patch

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

https://git.kernel.org/stable/c/2c1ba9c2adf0fda96eaaebd8799268a7506a8fc9

https://git.kernel.org/stable/c/acd8319e834be6790e449701cb6df0f636801977

https://git.kernel.org/stable/c/da289440f04c93048d82d293b180f1cacdfee2d9