{"id":"CVE-2026-90383","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-90383","summary":"misc: sgi-gru: remove interrupt-context page-table walks","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: sgi-gru: remove interrupt-context page-table walks\n\nThe GRU TLB miss handler walks a process's page tables without holding\npage-table locks or a reference to the mapped page. It also uses a kernel\npage-table accessor on user page tables and supports only PMD-level large\nmappings on x86-64.\n\nRemove the direct walker. Send interrupt faults directly to user polling\nmode so the existing call-OS fallback retries them in process context.\n\nRemove the mmap-lock failure statistic that can no longer be incremented.","published":"2026-09-17T16:09:19.875Z","modified":"2026-09-19T03:47:26.255557417Z","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":"6.12.110"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6248eb1833ff0adfdbbadd5f846c2f22e02a01b0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/877423f595b60f8fe7c18b64a5d283d9e1732a13"},{"type":"WEB","url":"https://git.kernel.org/stable/c/928a8e9f523df845fc496bcb9811013b67aabec5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef81e4a1628ecfb9cfc442de10883f383faf17a1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90383.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90383"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T03:47:26.255557417Z"}}