CVE-2026-80949
wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control()
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control() The memory allocated for buf is not freed in some of the error paths in brcmf_sdio_read_control(). Fix that by adding vfree() calls. [arend: rework as suggested by Johannes]
INFO
Published Date :
Sept. 11, 2026, 8:19 p.m.
Last Modified :
Sept. 14, 2026, 1:18 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Ensure vfree() is called in all error paths.
- Review brcmf_sdio_read_control() for unreleased resources.
- Apply kernel patches that include the fix.
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-2026-80949.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-80949 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-2026-80949
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-2026-80949 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-80949 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.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 14, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/80xxx/CVE-2026-80949.json">CVE-2026-80949</a> Added Reference https://git.kernel.org/stable/c/7704f6ba2a8c492b07a3eaa1e311b4b30d389246 Added Reference https://git.kernel.org/stable/c/86b57fa3172e287bc083113507a965e6d9a46a45 Added Reference https://git.kernel.org/stable/c/a732c4f36a4cd79f3702391f88ebb56f2e43b0ee Added Reference https://git.kernel.org/stable/c/b1d0a90a844abccdfed9fe141b5d0d654a821485 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 11, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control() The memory allocated for buf is not freed in some of the error paths in brcmf_sdio_read_control(). Fix that by adding vfree() calls. [arend: rework as suggested by Johannes] Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/80xxx/CVE-2026-80949.json">CVE-2026-80949</a> Added Reference https://git.kernel.org/stable/c/0d10db8e94fcb23a799789aaa696b4d8f937e207 Added Reference https://git.kernel.org/stable/c/261d7c7610b4b2f476382c88a2d1ae0cc5e07add Added Reference https://git.kernel.org/stable/c/ba04715ee672c336272be3ceb43bda9ffc33eb75 Added Reference https://git.kernel.org/stable/c/fdb880a7d575efe8b5c7b5b819b96d9251a3937f