CVE-2026-63822: Linux kernel · wifi: ath11k: fix warning when unbinding
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 12 Nov 2026, 15:35 UTC
Rated Low by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 19 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.
What to do
AI-suggested
A fix has been implemented in the Linux kernel to address this issue by setting buffer pointers to NULL after release, preventing double free warnings. Users should update to the fixed kernel version once available. No additional mitigation is indicated.
Description
A double free warning vulnerability was identified and fixed in the Linux kernel's ath11k WiFi driver. The issue occurs during device unbinding when buffers are released twice due to an error in firmware initialization. This can cause kernel warnings and potential instability. The fix involves setting buffer pointers to NULL after release to prevent double freeing.
References
- git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3 (opens in a new tab)
- git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c (opens in a new tab)
- git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e (opens in a new tab)
- git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2 (opens in a new tab)
- git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13 (opens in a new tab)
- git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a (opens in a new tab)
- git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01 (opens in a new tab)
- git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7 (opens in a new tab)