What is CVE-2026-68256?

CVE-2026-68256 is a unscored severity Linux kernel vulnerability. CVE-2026-68256 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-68256?

CVE-2026-68256 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-68256?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2026-68256 patch availability.

Is CVE-2026-68256 actively exploited?

CVE-2026-68256 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-68256

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference prev_sink is unconditionally retained via dc_sink_retain at function entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT returns false without releasing prev_sink. All other return paths in the function correctly call dc_sink_release(prev_sink), making this the only missing cleanup. (cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)

Package Linux Kernel

Published 2026-08-10

Last modified 2026-08-10

Patch available

Awaiting data

References

5 total

Kernel Git
https://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8
Kernel Git
https://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf
Kernel Git
https://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09
Kernel Git
https://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1
Kernel Git
https://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b