CVEvulnerability
CVE-2026-90383
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-09-17
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
misc: sgi-gru: remove interrupt-context page-table walks
The GRU TLB miss handler walks a process's page tables without holding
page-table locks or a reference to the mapped page. It also uses a kernel
page-table accessor on user page tables and supports only PMD-level large
mappings on x86-64.
Remove the direct walker. Send interrupt faults directly to user polling
mode so the existing call-OS fallback retries them in process context.
Remove the mmap-lock failure statistic that can no longer be incremented.
References
- https://git.kernel.org/stable/c/5a540ced720b4397306337cab34af1af4b30827c git.kernel.org
- https://git.kernel.org/stable/c/6248eb1833ff0adfdbbadd5f846c2f22e02a01b0 git.kernel.org
- https://git.kernel.org/stable/c/877423f595b60f8fe7c18b64a5d283d9e1732a13 git.kernel.org
- https://git.kernel.org/stable/c/928a8e9f523df845fc496bcb9811013b67aabec5 git.kernel.org
- https://git.kernel.org/stable/c/ef81e4a1628ecfb9cfc442de10883f383faf17a1 git.kernel.org