SB20260812277 - Memory leak in Linux kernel dc link driver
Published: August 12, 2026
Security Bulletin ID
SB20260812277
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) Memory leak (CVE-ID: CVE-2026-68256)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 4.8 [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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a memory leak in detect_link_and_local_sink in the AMD display link detection code when handling a DisplayPort alt mode timeout. A local user can trigger the timeout path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8
- https://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf
- https://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09
- https://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1
- https://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b