{"cvss":7.8,"datePublished":"2026-05-27T14:17:30.547","dateUpdated":"2026-09-14T12:17:41.723","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.","id":"CVE-2026-46090","raw":{"affected":[{"affectedData":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/drivers/aloop.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"83bd62fa9620ac98d5d694bde14c50f98c8e7189","status":"affected","version":"597603d615d2b19a9e451d8cfac24372856a522d","versionType":"git"},{"lessThan":"345c24b2bcf0923dfae1ab41497351c68214ff76","status":"affected","version":"597603d615d2b19a9e451d8cfac24372856a522d","versionType":"git"},{"lessThan":"3727a3541788412c393eec236ad228d72efe19c7","status":"affected","version":"597603d615d2b19a9e451d8cfac24372856a522d","versionType":"git"},{"lessThan":"d258cdce50ff3e02392917258e81a0ce9555c327","status":"affected","version":"597603d615d2b19a9e451d8cfac24372856a522d","versionType":"git"},{"lessThan":"03f52a9c170431e8f10e156b9dc0dae80b3e9198","status":"affected","version":"597603d615d2b19a9e451d8cfac24372856a522d","versionType":"git"},{"lessThan":"bdd9503c3d222d2735b56c7a8b4422ccf3de6e5c","status":"affected","version":"597603d615d2b19a9e451d8cfac24372856a522d","versionType":"git"},{"lessThan":"5d45e34bf001344e2966dabca1897561bbc9e913","status":"affected","version":"597603d615d2b19a9e451d8cfac24372856a522d","versionType":"git"},{"lessThan":"e5c33cdc6f402eab8abd36ecf436b22c9d3a8aff","status":"affected","version":"597603d615d2b19a9e451d8cfac24372856a522d","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/drivers/aloop.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.37"},{"lessThan":"2.6.37","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"affectedData":[{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"kernel","product":"Red 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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."}],"id":"CVE-2026-46090","lastModified":"2026-09-14T12:17:41.723","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.8,"impactScore":5.9,"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary"},{"cvssData":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.0,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.0,"impactScore":5.9,"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","type":"Secondary"}]},"published":"2026-05-27T14:17:30.547","references":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/03f52a9c170431e8f10e156b9dc0dae80b3e9198"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/345c24b2bcf0923dfae1ab41497351c68214ff76"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","url":"https://git.kernel.org/stable/c/3727a3541788412c393eec236ad228d72efe19c7"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/5d45e34bf001344e2966dabca1897561bbc9e913"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/83bd62fa9620ac98d5d694bde14c50f98c8e7189"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/bdd9503c3d222d2735b56c7a8b4422ccf3de6e5c"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","url":"https://git.kernel.org/stable/c/d258cdce50ff3e02392917258e81a0ce9555c327"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/e5c33cdc6f402eab8abd36ecf436b22c9d3a8aff"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:27353"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:27354"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:30848"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:33215"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:33685"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:33899"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:33900"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:34094"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:34095"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:34443"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:35844"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:35863"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:35896"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/errata/RHSA-2026:41236"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://access.redhat.com/security/cve/CVE-2026-46090"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2481980"},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46090.json"}],"sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-416"}],"source":"nvd@nist.gov","type":"Primary"},{"description":[{"lang":"en","value":"CWE-364"}],"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","type":"Secondary"}]},"severity":"HIGH","source":"nvd","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: aloop: Fix peer runtime UAF during format-..."}