{"id":"CVE-2026-46090","revision":null,"records":[{"revision":"0d0629e1f652408d96a1d8c62c76f358","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46090","aliases":[],"title":"ALSA: aloop: Fix peer runtime UAF during format-change stop","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: aloop: Fix peer runtime UAF during format-change stop\n\nloopback_check_format() may stop the capture side when playback starts\nwith parameters that no longer match a running capture stream. Commit\n826af7fa62e3 (\"ALSA: aloop: Fix racy access at PCM trigger\") moved\nthe peer lookup under cable->lock, but the actual snd_pcm_stop() still\nruns after dropping that lock.\n\nA concurrent close can clear the capture entry from cable->streams[] and\ndetach or free its runtime while the playback trigger path still holds a\nstale peer substream pointer.\n\nKeep a per-cable count of in-flight peer stops before dropping\ncable->lock, and make free_cable() wait for those stops before\ndetaching the runtime. This preserves the existing behavior while\nmaking the peer runtime lifetime explicit.","state":0,"publishedAt":"2026-05-27T12:58:34.428+00:00","modifiedAt":"2026-10-19T19:26:43.25+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/drivers/aloop.c\"\n ],\n \"versions\": [\n {\n \"version\": \"597603d615d2b19a9e451d8cfac24372856a522d\",\n \"lessThan\": \"83bd62fa9620ac98d5d694bde14c50f98c8e7189\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"597603d615d2b19a9e451d8cfac24372856a522d\",\n \"lessThan\": \"345c24b2bcf0923dfae1ab41497351c68214ff76\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"597603d615d2b19a9e451d8cfac24372856a522d\",\n \"lessThan\": \"3727a3541788412c393eec236ad228d72efe19c7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"597603d615d2b19a9e451d8cfac24372856a522d\",\n \"lessThan\": \"d258cdce50ff3e02392917258e81a0ce9555c327\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"597603d615d2b19a9e451d8cfac24372856a522d\",\n \"lessThan\": \"03f52a9c170431e8f10e156b9dc0dae80b3e9198\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"597603d615d2b19a9e451d8cfac24372856a522d\",\n \"lessThan\": \"bdd9503c3d222d2735b56c7a8b4422ccf3de6e5c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"597603d615d2b19a9e451d8cfac24372856a522d\",\n \"lessThan\": \"5d45e34bf001344e2966dabca1897561bbc9e913\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"597603d615d2b19a9e451d8cfac24372856a522d\",\n \"lessThan\": \"e5c33cdc6f402eab8abd36ecf436b22c9d3a8aff\",\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/drivers/aloop.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2.6.37\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"2.6.37\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.259\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.210\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.188\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.157\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.88\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.27\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.4\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\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/83bd62fa9620ac98d5d694bde14c50f98c8e7189","https://git.kernel.org/stable/c/345c24b2bcf0923dfae1ab41497351c68214ff76","https://git.kernel.org/stable/c/3727a3541788412c393eec236ad228d72efe19c7","https://git.kernel.org/stable/c/d258cdce50ff3e02392917258e81a0ce9555c327","https://git.kernel.org/stable/c/03f52a9c170431e8f10e156b9dc0dae80b3e9198","https://git.kernel.org/stable/c/bdd9503c3d222d2735b56c7a8b4422ccf3de6e5c","https://git.kernel.org/stable/c/5d45e34bf001344e2966dabca1897561bbc9e913","https://git.kernel.org/stable/c/e5c33cdc6f402eab8abd36ecf436b22c9d3a8aff"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46090","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-46090","identifiers":["CVE-2026-46090"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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