CVE-2026-63822
wifi: ath11k: fix warning when unbinding
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.
INFO
Published Date :
July 19, 2026, 12:16 p.m.
Last Modified :
July 19, 2026, 12:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-63822
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Set buffers to NULL after releasing.
- Apply the Linux kernel patch.
- Update the Linux kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-63822.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-63822 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-63822
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-63822 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-63822 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': 'e569a5cb401a267168621aa9a1e7f07fcc9612c3', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '0aa097a370277deab5337030b9e2d395742f469c', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '0a946abb82f29abe9a15173b707a449cb039b43e', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '318703b6f71d1a29ee0ac46c32a38f7734d4cfb2', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '051f954b94479d72222c9fbc82a3eef4777bca01', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '8b7a26b6681922a38cd5a7829ace61f8e54df9b7', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/ath/ath11k/dp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.260', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.211', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.177', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.144', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.38', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.3', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/wireless/ath/ath11k/dp.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01 Added Reference https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e Added Reference https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c Added Reference https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2 Added Reference https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a Added Reference https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13 Added Reference https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7 Added Reference https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3