CVE-2026-90383misc: sgi-gru: remove interrupt-context page-table walks
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 142586409c8be7dc071bb94d7cd2d69ccfd99b6b builds before 877423f595b60f8fe7c18b64a5d283d9e1732a13; 142586409c8be7dc071bb94d7cd2d69ccfd99b6b builds before 6248eb1833ff0adfdbbadd5f846c2f22e02a01b0; from 142586409c8be7dc071bb94d7cd2d69ccfd99b6b before ef81e4a1628ecfb9cfc442de10883f383faf17a1; 142586409c8be7dc071bb94d7cd2d69ccfd99b6b builds before 928a8e9f523df845fc496bcb9811013b67aabec5 | CNA record |
References
- https://git.kernel.org/stable/c/877423f595b60f8fe7c18b64a5d283d9e1732a13
- https://git.kernel.org/stable/c/6248eb1833ff0adfdbbadd5f846c2f22e02a01b0
- https://git.kernel.org/stable/c/ef81e4a1628ecfb9cfc442de10883f383faf17a1
- https://git.kernel.org/stable/c/928a8e9f523df845fc496bcb9811013b67aabec5
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.