{"api_version":"1","generated_at":"2026-05-28T18:49:21+00:00","cve":"CVE-2026-46157","urls":{"html":"https://cve.report/CVE-2026-46157","api":"https://cve.report/api/cve/CVE-2026-46157.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46157","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46157"},"summary":{"title":"ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger\n\nCurrently the runtime.oss.trigger field may be accessed concurrently\nwithout protection, which may lead to the data race.  And, in this\ncase, it may lead to more severe problem because it's a bit field; as\nwriting the data, it may overwrite other bit fields as well, which\nconfuses the operation completely, as spotted by fuzzing.\n\nFix it by covering runtime.oss.trigger bit fled also with the existing\nparams_lock mutex in both snd_pcm_oss_get_trigger() and\nsnd_pcm_oss_poll().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-28 10:16:31","updated_at":"2026-05-28 13:44:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/49f9d048845be874df7997e4b1ce662de450c4b6","name":"https://git.kernel.org/stable/c/49f9d048845be874df7997e4b1ce662de450c4b6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6b01c1bc9a4748ab37548a700a8aaff910e298e6","name":"https://git.kernel.org/stable/c/6b01c1bc9a4748ab37548a700a8aaff910e298e6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1","name":"https://git.kernel.org/stable/c/ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/901ac0ff15edf9503162e2cf6579bd11a30f1ed4","name":"https://git.kernel.org/stable/c/901ac0ff15edf9503162e2cf6579bd11a30f1ed4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46157","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46157","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 49f9d048845be874df7997e4b1ce662de450c4b6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 6b01c1bc9a4748ab37548a700a8aaff910e298e6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 901ac0ff15edf9503162e2cf6579bd11a30f1ed4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.88 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.30 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.88 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.30 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.7 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/core/oss/pcm_oss.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"49f9d048845be874df7997e4b1ce662de450c4b6","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"6b01c1bc9a4748ab37548a700a8aaff910e298e6","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"901ac0ff15edf9503162e2cf6579bd11a30f1ed4","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"6.12.88","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.18.30","status":"affected","version":"0","versionType":"semver"},{"lessThan":"7.0.7","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/core/oss/pcm_oss.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.30","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.88","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.30","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger\n\nCurrently the runtime.oss.trigger field may be accessed concurrently\nwithout protection, which may lead to the data race.  And, in this\ncase, it may lead to more severe problem because it's a bit field; as\nwriting the data, it may overwrite other bit fields as well, which\nconfuses the operation completely, as spotted by fuzzing.\n\nFix it by covering runtime.oss.trigger bit fled also with the existing\nparams_lock mutex in both snd_pcm_oss_get_trigger() and\nsnd_pcm_oss_poll()."}],"providerMetadata":{"dateUpdated":"2026-05-28T09:36:12.895Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/49f9d048845be874df7997e4b1ce662de450c4b6"},{"url":"https://git.kernel.org/stable/c/ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1"},{"url":"https://git.kernel.org/stable/c/6b01c1bc9a4748ab37548a700a8aaff910e298e6"},{"url":"https://git.kernel.org/stable/c/901ac0ff15edf9503162e2cf6579bd11a30f1ed4"}],"title":"ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46157","datePublished":"2026-05-28T09:36:12.895Z","dateReserved":"2026-05-13T15:03:33.102Z","dateUpdated":"2026-05-28T09:36:12.895Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-28 10:16:31","lastModifiedDate":"2026-05-28 13:44:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46157","Ordinal":"1","Title":"ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger","CVE":"CVE-2026-46157","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46157","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger\n\nCurrently the runtime.oss.trigger field may be accessed concurrently\nwithout protection, which may lead to the data race.  And, in this\ncase, it may lead to more severe problem because it's a bit field; as\nwriting the data, it may overwrite other bit fields as well, which\nconfuses the operation completely, as spotted by fuzzing.\n\nFix it by covering runtime.oss.trigger bit fled also with the existing\nparams_lock mutex in both snd_pcm_oss_get_trigger() and\nsnd_pcm_oss_poll().","Type":"Description","Title":"ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger"}]}}}