SB20260425156 - Improper resource shutdown or release in Linux kernel ethernet cadence driver
Published: April 25, 2026
Security Bulletin ID
SB20260425156
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper resource shutdown or release (CVE-ID: CVE-2026-31563)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in the macb TX SKB freeing logic when freeing transmitted socket buffers in an IRQ-disabled context. A local user can trigger network traffic processing to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/647b8a2fe474474704110db6bd07f7a139e621eb
- https://git.kernel.org/stable/c/78c8b090a3d5c1689dc989861b0163180db2b3f8
- https://git.kernel.org/stable/c/92e7081f0c79d9073087e54bab745bb184192c2e
- https://git.kernel.org/stable/c/984350b37372f79f71d4f0a5264c640e40daf9ce
- https://git.kernel.org/stable/c/ca4d05afb4683d685bb2c6fccae4386c478f524a
- https://git.kernel.org/stable/c/f4bc91398b579730284328322365afa77a9d568f