In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix error path leaks in some WMI WOW calls Fix two instances where… (CVE-2026-64155)
A medium severity vulnerability (CVE-2026-64155) in the Linux kernel's ath11k WiFi driver was fixed. The issue involved error path leaks in some WMI Wake on Wireless (WOW) calls due to failure to free skb buffers on error paths. This could lead to resource leaks affecting system availability.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel's ath11k WiFi driver involved two instances where the code returned directly from ath11k_wmi_cmd_send(...) without checking its return value, resulting in failure to free socket buffer (skb) resources on error paths. This caused resource leaks (CWE-401) that could degrade system availability. The issue was resolved by correcting the error handling to properly free skb buffers.
Potential Impact
The vulnerability does not impact confidentiality or integrity but can cause denial of service through resource exhaustion due to leaked skb buffers in error paths. This aligns with the CVSS vector indicating no confidentiality or integrity impact but a high impact on availability.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this issue by correcting error path handling in the ath11k driver. Users should update to the fixed kernel version once available. Patch status is not explicitly confirmed in the provided data; check the official Linux kernel advisories for the exact fixed version and apply updates accordingly.
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix error path leaks in some WMI WOW calls Fix two instances where… (CVE-2026-64155)
Description
A medium severity vulnerability (CVE-2026-64155) in the Linux kernel's ath11k WiFi driver was fixed. The issue involved error path leaks in some WMI Wake on Wireless (WOW) calls due to failure to free skb buffers on error paths. This could lead to resource leaks affecting system availability.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel's ath11k WiFi driver involved two instances where the code returned directly from ath11k_wmi_cmd_send(...) without checking its return value, resulting in failure to free socket buffer (skb) resources on error paths. This caused resource leaks (CWE-401) that could degrade system availability. The issue was resolved by correcting the error handling to properly free skb buffers.
Potential Impact
The vulnerability does not impact confidentiality or integrity but can cause denial of service through resource exhaustion due to leaked skb buffers in error paths. This aligns with the CVSS vector indicating no confidentiality or integrity impact but a high impact on availability.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this issue by correcting error path handling in the ath11k driver. Users should update to the fixed kernel version once available. Patch status is not explicitly confirmed in the provided data; check the official Linux kernel advisories for the exact fixed version and apply updates accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-fhf8-xvr6-7xg9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64155"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27a82a4a8d598912a545
Added to database: 07/19/2026, 19:38:16 UTC
Last enriched: 08/17/2026, 16:39:18 UTC
Last updated: 08/31/2026, 22:52:13 UTC
Views: 62
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