{"id":"CVE-2026-68256","summary":"drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference\n\nprev_sink is unconditionally retained via dc_sink_retain at function\n  entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT\n  returns false without releasing prev_sink. All other return paths in the\n  function correctly call dc_sink_release(prev_sink), making this the only\n  missing cleanup.\n\n(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)","modified":"2026-08-18T03:31:17.954778642Z","published":"2026-08-10T12:01:26.406Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68256.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68256.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68256"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"54618888d1ea7a26f8bccfb89e3c2420350c8047"},{"fixed":"f9922828a4ebd26286fbe0286cc61695e7d9b07b"},{"fixed":"a59e493567d18ef3858be9368acd132a01ebfa09"},{"fixed":"4ee77643e6194f2deb62fe62f04396f9825e27d8"},{"fixed":"58ea24dd96848626039296e9e8510270ec8dc4bf"},{"fixed":"a6e14b976be48eebd8769cb5b883a6af7fc5ade1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68256.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.3.0"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68256.json"}}],"schema_version":"1.9.0"}