Riskcovery

CVE-2026-63822

wifi: ath11k: fix warning when unbinding

State
Published
Severity
Not scored
Published
Jul 19, 2026
Updated
Aug 17, 2026
Reserved
Jul 19, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath11k: fix warning when unbinding

If there is an error during some initialization related to firmware, the buffers dp->tx_ring[i].tx_status are released. However this is released again when the device is unbinded (ath11k_pci), and we get: WARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90 Call Trace: free_large_kmalloc ath11k_dp_free ath11k_core_deinit ath11k_pci_remove ...

The issue is always reproducible from a VM because the MSI addressing initialization is failing.

In order to fix the issue, just set the buffers to NULL after releasing in order to avoid the double free.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d5c65159f2895379e11ca13f62feabe93278985d to before e569a5cb401a267168621aa9a1e7f07fcc9612c3Affected
  • d5c65159f2895379e11ca13f62feabe93278985d to before 0aa097a370277deab5337030b9e2d395742f469cAffected
  • d5c65159f2895379e11ca13f62feabe93278985d to before 0a946abb82f29abe9a15173b707a449cb039b43eAffected
  • d5c65159f2895379e11ca13f62feabe93278985d to before 318703b6f71d1a29ee0ac46c32a38f7734d4cfb2Affected
  • d5c65159f2895379e11ca13f62feabe93278985d to before 7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13Affected
  • d5c65159f2895379e11ca13f62feabe93278985d to before 40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0aAffected
  • d5c65159f2895379e11ca13f62feabe93278985d to before 051f954b94479d72222c9fbc82a3eef4777bca01Affected
  • d5c65159f2895379e11ca13f62feabe93278985d to before 8b7a26b6681922a38cd5a7829ace61f8e54df9b7Affected
LinuxLinux
  • 5.6Affected
  • before 5.6Not affected
  • 5.10.260 through 5.10.*Not affected
  • 5.15.211 through 5.15.*Not affected
  • 6.1.177 through 6.1.*Not affected
  • 6.6.144 through 6.6.*Not affected
  • 6.12.95 through 6.12.*Not affected
  • 6.18.38 through 6.18.*Not affected
  • 7.1.3 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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