In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control() The memory… (CVE-2026-80949)
A memory leak vulnerability in the Linux kernel's brcmfmac wifi driver was fixed. The issue involved allocated memory for a buffer not being freed in certain error paths within the brcmf_sdio_read_control() function. The fix involved adding appropriate vfree() calls to release the allocated memory.
AI Analysis
Technical Summary
The Linux kernel's brcmfmac wifi driver contained a memory leak in the brcmf_sdio_read_control() function. Specifically, memory allocated for a buffer (buf) was not freed in some error handling paths, leading to a potential resource leak. This was corrected by adding vfree() calls to ensure proper memory deallocation. The vulnerability is identified as CVE-2026-80949.
Potential Impact
The vulnerability causes a memory leak in the kernel's wifi driver, which may lead to increased memory consumption over time. There is no indication of direct exploitation or further impact such as code execution or privilege escalation. No known exploits are reported in the wild.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel by adding vfree() calls to free allocated memory in all error paths of the affected function. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix memory leak in brcmf_sdio_read_control() The memory… (CVE-2026-80949)
Description
A memory leak vulnerability in the Linux kernel's brcmfmac wifi driver was fixed. The issue involved allocated memory for a buffer not being freed in certain error paths within the brcmf_sdio_read_control() function. The fix involved adding appropriate vfree() calls to release the allocated memory.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's brcmfmac wifi driver contained a memory leak in the brcmf_sdio_read_control() function. Specifically, memory allocated for a buffer (buf) was not freed in some error handling paths, leading to a potential resource leak. This was corrected by adding vfree() calls to ensure proper memory deallocation. The vulnerability is identified as CVE-2026-80949.
Potential Impact
The vulnerability causes a memory leak in the kernel's wifi driver, which may lead to increased memory consumption over time. There is no indication of direct exploitation or further impact such as code execution or privilege escalation. No known exploits are reported in the wild.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel by adding vfree() calls to free allocated memory in all error paths of the affected function. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5hvg-pfp7-3397
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-80949"]
Threat ID: 6aa4a03155bf5e2cf5a871ff
Added to database: 09/12/2026, 00:43:29 UTC
Last enriched: 09/12/2026, 01:26:44 UTC
Last updated: 09/12/2026, 02:01:34 UTC
Views: 3
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