{"id":"CVE-2026-72395","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72395","summary":"hwmon: (pmbus) Fix passing events to regulator core","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pmbus) Fix passing events to regulator core\n\nSashiko reports:\n\nCommit 754bd2b4a084 (\"hwmon: (pmbus/core) Protect regulator operations with\nmutex\") introduced a worker to batch regulator events over time using\natomic_or(). The delayed worker then passes the combined bitmask unmodified\nto regulator_notifier_call_chain().\n\nThe core regulator subsystem's regulator_handle_critical() function\nevaluates the event parameter using a strict switch statement. If\nmultiple distinct faults occur before the worker runs (e.g.,\nREGULATOR_EVENT_UNDER_VOLTAGE | REGULATOR_EVENT_OVER_CURRENT), the combined\nbitmask fails to match any case. This leaves the reason as NULL and\ncompletely bypasses the critical hw_protection_trigger().\n\nFix the problem by passing events bit by bit to the regulator event\nhandler.","published":"2026-08-15T05:56:22.400Z","modified":"2026-08-16T03:48:41.090026460Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.6.145"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2106bf4056858fcce3624e0c51f6fee4d41d3f2f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/489291b6b56978cc50d34e8e13f9636ea296ba8a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/48fe43666950efefb7ac5fbdc012c1b3604096bf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9ef7dacd44216bf5ea05c8aef49eba4d145f4047"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b0ff6b6ae9c5183ef701ece7016698bde5a5bfba"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72395.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72395"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-16T03:48:41.090026460Z"}}