wifi: ath12k: fix inconsistent arvif state in vdev_create error paths

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Summary

CVECVE-2026-74367
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:38 UTC
Updated2026-08-15 06:22:38 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix inconsistent arvif state in vdev_create error paths ath12k_mac_vdev_create() has three error path issues that leave arvif in an inconsistent state: 1. When ath12k_wmi_vdev_create() fails, the function returns directly without clearing arvif->ar, which was already set before the WMI call. Subsequent code checking arvif->ar to determine vdev readiness will see a non-NULL value despite no vdev existing in firmware. 2. When ath12k_wmi_send_peer_delete_cmd() fails in err_peer_del, the code jumped to err: skipping the DP peer cleanup and vdev rollback, leaving num_created_vdevs, vdev maps and arvif list membership live. 3. When ath12k_wait_for_peer_delete_done() fails, the code jumped to err_vdev_del: skipping the DP peer cleanup. Fix by changing the ath12k_wmi_vdev_create() failure to goto err instead of returning directly, routing both err_peer_del failure paths through err_dp_peer_del: for proper DP peer and vdev rollback, and consolidating the arvif state cleanup at err:. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 477cabfdb776b571fab425813c074f30c02a5cf6 e0140e094b196d92f2a4ce167ee73cbfab000290 git Not specified
CNA Linux Linux affected 477cabfdb776b571fab425813c074f30c02a5cf6 c972636efc63f0f43d725b59805dd1ae5bc4b31e git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e0140e094b196d92f2a4ce167ee73cbfab000290 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c972636efc63f0f43d725b59805dd1ae5bc4b31e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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