{"id":"CVE-2026-80716","revision":"f1ca4d5d500e4bc2b1153ffb726ef15d","records":[{"revision":"f1ca4d5d500e4bc2b1153ffb726ef15d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80716","aliases":[],"title":"ALSA: pcm: wake linked drain waiters on unlink","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: wake linked drain waiters on unlink\n\nsnd_pcm_drain() on a linked stream parks an on-stack wait entry on the\ndrained peer's runtime->sleep, and after schedule_timeout() removes it\nonly if that peer is still found in the caller's group.  If group\nmembership changes during the wait and the sleep ends by signal or\ntimeout (so autoremove_wake_function() does not run), finish_wait() is\nskipped and snd_pcm_drain() returns with the entry still queued on that\nstream's sleep list; a later wake_up() then walks a freed stack frame.\nThis is reachable by unlinking either the drained or the draining stream.\n\nUnlike the close path (snd_pcm_drop() -> snd_pcm_post_stop()),\nsnd_pcm_unlink() never wakes the sleep queues.  Wake every group member\nunder the group lock before the membership change, so a linked drainer is\nreleased and drops its entry while the streams are still grouped.\n\nThe window was opened when snd_pcm_link_rwsem stopped being held across\nthe wait and the removal became conditional on group membership (see\nFixes). The later switch to finish_wait() kept that conditional removal,\nso the signal/timeout case remained.","state":0,"publishedAt":"2026-08-28T06:53:14.286+00:00","modifiedAt":"2026-10-16T19:26:34.951+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"sound/core/pcm_native.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f57f3df03a8e6010e321fa0258d3e054713c3cb7\",\n                            \"lessThan\": \"c172e4c53321ee6429955295ea133bc3597a3ca9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f57f3df03a8e6010e321fa0258d3e054713c3cb7\",\n                            \"lessThan\": \"3035bb784cea3f338934f5042dd3f35225a51b2e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f57f3df03a8e6010e321fa0258d3e054713c3cb7\",\n                            \"lessThan\": \"1c1b7e8e545ce65e40f65b55c432765e058ea98f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f57f3df03a8e6010e321fa0258d3e054713c3cb7\",\n                            \"lessThan\": \"e8b784a3f4fba3ea9c4d05138ecfa784a069627f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f57f3df03a8e6010e321fa0258d3e054713c3cb7\",\n                            \"lessThan\": \"e8315330e4ec09c0cac625515400e13d0ee22b81\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f57f3df03a8e6010e321fa0258d3e054713c3cb7\",\n                            \"lessThan\": \"2940cc3cf43c72126b74ee6376314c195382023a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f57f3df03a8e6010e321fa0258d3e054713c3cb7\",\n                            \"lessThan\": \"db09bc4ab19ce548a078240d2374792523953500\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f57f3df03a8e6010e321fa0258d3e054713c3cb7\",\n                            \"lessThan\": \"f495b6c4c8594122918552c9be2b51eb71647cd9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"sound/core/pcm_native.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.151\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.103\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/c172e4c53321ee6429955295ea133bc3597a3ca9","https://git.kernel.org/stable/c/3035bb784cea3f338934f5042dd3f35225a51b2e","https://git.kernel.org/stable/c/1c1b7e8e545ce65e40f65b55c432765e058ea98f","https://git.kernel.org/stable/c/e8b784a3f4fba3ea9c4d05138ecfa784a069627f","https://git.kernel.org/stable/c/e8315330e4ec09c0cac625515400e13d0ee22b81","https://git.kernel.org/stable/c/2940cc3cf43c72126b74ee6376314c195382023a","https://git.kernel.org/stable/c/db09bc4ab19ce548a078240d2374792523953500","https://git.kernel.org/stable/c/f495b6c4c8594122918552c9be2b51eb71647cd9"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80716","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80716","identifiers":["CVE-2026-80716"]},"retained":false,"historicalAffected":[]}],"coverage":[]}