{"id":"CVE-2026-80751","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-80751","summary":"pmdomain: mediatek: mfg: initialize prev_o in mtk_mfg_attach_dev()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npmdomain: mediatek: mfg: initialize prev_o in mtk_mfg_attach_dev()\n\nmtk_mfg_attach_dev() reads prev_o on the first iteration of its loop,\nin \"if (prev_o && prev_o->freq == o->freq)\", before prev_o is assigned\nat the end of the loop body. On that first iteration, evaluating prev_o\nreads an indeterminate value. If it is non-NULL, the condition\ndereferences a stale or invalid pointer, potentially faulting or\nincorrectly skipping the first OPP.\n\nInitialize prev_o to NULL. This matches the intent as well: there is no\nprevious OPP to compare against on the first iteration.\n\nFound with Clang's -Wconditional-uninitialized.","published":"2026-09-03T08:26:31.347Z","modified":"2026-09-05T03:48:19.460508788Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"7.1.10"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/090a95dbe13df9965279b588d97eda134831769c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/de4eec0dfde8c0e27f8915bbb244d17ff68f2fb4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80751.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80751"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-05T03:48:19.460508788Z"}}