SB20260528120 - Release of invalid pointer or reference in Linux kernel crypto ccp driver
Published: May 28, 2026
Security Bulletin ID
SB20260528120
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) Release of invalid pointer or reference (CVE-ID: CVE-2026-45959)
CWE-ID: CWE-763 - Release of invalid pointer or reference
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 attacker to cause a denial of service.
The vulnerability exists due to invalid free in the ccp crypto component when performing cleanup of a local pointer annotated with __cleanup(kfree). A local attacker can trigger the vulnerable code path to cause a denial of service.
Remediation
Install update from vendor's website.