{"api_version":"1","generated_at":"2026-06-26T15:01:38+00:00","cve":"CVE-2026-53192","urls":{"html":"https://cve.report/CVE-2026-53192","api":"https://cve.report/api/cve/CVE-2026-53192.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53192","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53192"},"summary":{"title":"ALSA: timer: Fix UAF at snd_timer_user_params()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: timer: Fix UAF at snd_timer_user_params()\n\nAt releasing a timer object, e.g. when a userspace timer\n(CONFIG_SND_UTIMER) gets closed and snd_timer_free() is called, it\ntries to detach the timer instances and release the resources.\nHowever, it's still possible that other in-flight tasks are holding\nthe timer instance where the to-be-deleted timer object is associated,\nand this may lead to racy accesses.\n\nFortunately, most of ioctls dealing with the timer instance list\nalready have the protection with register_mutex, and this also avoids\nsuch races.  But, SNDRV_TIMER_IOCTL_PARAMS isn't protected, hence the\nconcurrent ioctl may lead to use-after-free.\n\nThis patch just adds the guard with register_mutex to protect\nsnd_timer_user_params() for covering the code path as a quick\nworkaround.  It's no hot-path but rather a rarely issued ioctl, so the\nperformance penalty doesn't matter.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-25 09:16:36","updated_at":"2026-06-25 09:16:36"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/053a401b592be424fea9d57c789f66cd5d8cec11","name":"https://git.kernel.org/stable/c/053a401b592be424fea9d57c789f66cd5d8cec11","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/306427adf9b97e29e5958cb9cf3096c6151fc9ff","name":"https://git.kernel.org/stable/c/306427adf9b97e29e5958cb9cf3096c6151fc9ff","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3d39da65b5c422c5e5afb7d5651b0698d060a827","name":"https://git.kernel.org/stable/c/3d39da65b5c422c5e5afb7d5651b0698d060a827","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b2214914e461d0466548a52dfe4f4ee8ce362276","name":"https://git.kernel.org/stable/c/b2214914e461d0466548a52dfe4f4ee8ce362276","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/38034d04d4a75bbca01df2b313ced0bcd0fa3242","name":"https://git.kernel.org/stable/c/38034d04d4a75bbca01df2b313ced0bcd0fa3242","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/92ad2d7f80cad43b046f093e808e11fe919d304a","name":"https://git.kernel.org/stable/c/92ad2d7f80cad43b046f093e808e11fe919d304a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/117743d62e1225e208568a3ffc2c07214f1347cb","name":"https://git.kernel.org/stable/c/117743d62e1225e208568a3ffc2c07214f1347cb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e2331730175f74169046d2af8db1b47243df7c7a","name":"https://git.kernel.org/stable/c/e2331730175f74169046d2af8db1b47243df7c7a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53192","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53192","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 92ad2d7f80cad43b046f093e808e11fe919d304a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 117743d62e1225e208568a3ffc2c07214f1347cb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 b2214914e461d0466548a52dfe4f4ee8ce362276 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 e2331730175f74169046d2af8db1b47243df7c7a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.36 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.13 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"53192","cve":"CVE-2026-53192","epss":"0.001840000","percentile":"0.081770000","score_date":"2026-06-25","updated_at":"2026-06-26 00:06:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/core/timer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"92ad2d7f80cad43b046f093e808e11fe919d304a","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"117743d62e1225e208568a3ffc2c07214f1347cb","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"b2214914e461d0466548a52dfe4f4ee8ce362276","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"e2331730175f74169046d2af8db1b47243df7c7a","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"38034d04d4a75bbca01df2b313ced0bcd0fa3242","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"3d39da65b5c422c5e5afb7d5651b0698d060a827","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"306427adf9b97e29e5958cb9cf3096c6151fc9ff","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"053a401b592be424fea9d57c789f66cd5d8cec11","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"5.10.259","status":"affected","version":"0","versionType":"semver"},{"lessThan":"5.15.210","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.1.176","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.6.143","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.12.94","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.18.36","status":"affected","version":"0","versionType":"semver"},{"lessThan":"7.0.13","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/core/timer.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"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":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.259","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.210","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.176","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.143","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.94","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: timer: Fix UAF at snd_timer_user_params()\n\nAt releasing a timer object, e.g. when a userspace timer\n(CONFIG_SND_UTIMER) gets closed and snd_timer_free() is called, it\ntries to detach the timer instances and release the resources.\nHowever, it's still possible that other in-flight tasks are holding\nthe timer instance where the to-be-deleted timer object is associated,\nand this may lead to racy accesses.\n\nFortunately, most of ioctls dealing with the timer instance list\nalready have the protection with register_mutex, and this also avoids\nsuch races.  But, SNDRV_TIMER_IOCTL_PARAMS isn't protected, hence the\nconcurrent ioctl may lead to use-after-free.\n\nThis patch just adds the guard with register_mutex to protect\nsnd_timer_user_params() for covering the code path as a quick\nworkaround.  It's no hot-path but rather a rarely issued ioctl, so the\nperformance penalty doesn't matter."}],"providerMetadata":{"dateUpdated":"2026-06-25T08:39:03.696Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/92ad2d7f80cad43b046f093e808e11fe919d304a"},{"url":"https://git.kernel.org/stable/c/117743d62e1225e208568a3ffc2c07214f1347cb"},{"url":"https://git.kernel.org/stable/c/b2214914e461d0466548a52dfe4f4ee8ce362276"},{"url":"https://git.kernel.org/stable/c/e2331730175f74169046d2af8db1b47243df7c7a"},{"url":"https://git.kernel.org/stable/c/38034d04d4a75bbca01df2b313ced0bcd0fa3242"},{"url":"https://git.kernel.org/stable/c/3d39da65b5c422c5e5afb7d5651b0698d060a827"},{"url":"https://git.kernel.org/stable/c/306427adf9b97e29e5958cb9cf3096c6151fc9ff"},{"url":"https://git.kernel.org/stable/c/053a401b592be424fea9d57c789f66cd5d8cec11"}],"title":"ALSA: timer: Fix UAF at snd_timer_user_params()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53192","datePublished":"2026-06-25T08:39:03.696Z","dateReserved":"2026-06-09T07:44:35.390Z","dateUpdated":"2026-06-25T08:39:03.696Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-25 09:16:36","lastModifiedDate":"2026-06-25 09:16:36","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53192","Ordinal":"1","Title":"ALSA: timer: Fix UAF at snd_timer_user_params()","CVE":"CVE-2026-53192","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53192","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: timer: Fix UAF at snd_timer_user_params()\n\nAt releasing a timer object, e.g. when a userspace timer\n(CONFIG_SND_UTIMER) gets closed and snd_timer_free() is called, it\ntries to detach the timer instances and release the resources.\nHowever, it's still possible that other in-flight tasks are holding\nthe timer instance where the to-be-deleted timer object is associated,\nand this may lead to racy accesses.\n\nFortunately, most of ioctls dealing with the timer instance list\nalready have the protection with register_mutex, and this also avoids\nsuch races.  But, SNDRV_TIMER_IOCTL_PARAMS isn't protected, hence the\nconcurrent ioctl may lead to use-after-free.\n\nThis patch just adds the guard with register_mutex to protect\nsnd_timer_user_params() for covering the code path as a quick\nworkaround.  It's no hot-path but rather a rarely issued ioctl, so the\nperformance penalty doesn't matter.","Type":"Description","Title":"ALSA: timer: Fix UAF at snd_timer_user_params()"}]}}}