CVE-2026-90383

Published: September 19, 2026Last modified: September 28, 2026

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.

Severity score breakdown

Status

References

• https://git.kernel.org/stable/c/6248eb1833ff0adfdbbadd5f846c2f22e02a01b0
• https://git.kernel.org/stable/c/877423f595b60f8fe7c18b64a5d283d9e1732a13
• https://git.kernel.org/stable/c/928a8e9f523df845fc496bcb9811013b67aabec5
• https://git.kernel.org/stable/c/ef81e4a1628ecfb9cfc442de10883f383faf17a1