SB2026081555 - Race condition in Linux kernel ath ath11k driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-74407)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to a race condition in the ath11k PCI shutdown and SSR recovery handling when shutdown or reboot overlaps with WLAN firmware crash recovery. A local attacker can trigger a reboot during concurrent SSR activity to cause a denial of service.

This issue affects only PCI/MHI-based devices; AHB-based ath11k devices are not affected in normal SSR flows.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/53dd29e8aeb2a1b5f079178551836b85fc6b53df
• https://git.kernel.org/stable/c/8c79aac429b583301f387374ff37c59be671df87