{"cve":"CVE-2026-46157","nvd":{"published":"2026-05-28T10:16:31.363","modified":"2026-10-21T13:19:04.343","status":"Modified","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().","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-362"],"references":["https://git.kernel.org/stable/c/49f9d048845be874df7997e4b1ce662de450c4b6","https://git.kernel.org/stable/c/6b01c1bc9a4748ab37548a700a8aaff910e298e6","https://git.kernel.org/stable/c/901ac0ff15edf9503162e2cf6579bd11a30f1ed4","https://git.kernel.org/stable/c/ac3e9b55b7da6f0be51720bd330a0edc1a8b61f1","https://git.kernel.org/stable/c/c937a494901df8fbfaa5037a5883a7cd44282ea8"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-46157","score":0.001,"percentile":0.00823,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}