CVE-2026-68256

Summary

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)

Affected Software

VendorProductVersion RangeStatus
LinuxLinux54618888d1ea7a26f8bccfb89e3c2420350c8047 < f9922828a4ebd26286fbe0286cc61695e7d9b07baffected
LinuxLinux54618888d1ea7a26f8bccfb89e3c2420350c8047 < a59e493567d18ef3858be9368acd132a01ebfa09affected
LinuxLinux54618888d1ea7a26f8bccfb89e3c2420350c8047 < 4ee77643e6194f2deb62fe62f04396f9825e27d8affected
LinuxLinux54618888d1ea7a26f8bccfb89e3c2420350c8047 < 58ea24dd96848626039296e9e8510270ec8dc4bfaffected
LinuxLinux54618888d1ea7a26f8bccfb89e3c2420350c8047 < a6e14b976be48eebd8769cb5b883a6af7fc5ade1affected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2-rc2 <= *unaffected

Weaknesses

References