SB2026042577 - Improper resource shutdown or release in Linux kernel microchip lan966x driver
Published: April 25, 2026
Security Bulletin ID
SB2026042577
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-2026-31645)
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 lan966x_fdma_rx_alloc() and lan966x_fdma_init() when handling error paths after page pool creation. A local user can trigger allocation failures to cause a denial of service.
Remediation
Install update from vendor's website.