SB2026050915 - Improper resource shutdown or release in Linux kernel dsa microchip driver
Published: May 9, 2026
Security Bulletin ID
SB2026050915
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
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-2026-43372)
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:L/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 PTP IRQ setup logic when handling failures during IRQ setup. A local user can trigger request_threaded_irq() failure during PTP message IRQ initialization to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/3704ac6a0d9a78f66a187515a8ca3faedaf01cc5
- https://git.kernel.org/stable/c/6c58a9fdb0d0e1011aa02455d26d6ebea251979b
- https://git.kernel.org/stable/c/99c8c16a4aad0b37293cae213e15957c573cf79b
- https://git.kernel.org/stable/c/c2d1d41e0e8ec447d40a5752844fc5fb0b23db27
- https://git.kernel.org/stable/c/e80fef36c676c947072dabeb5803ae59d92ba493