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CVE-2026-90383NVD

Vulnerability Summary

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 Level
HIGH(7.8)
Published Date
Sep 17, 2026
Last Modified
Sep 18, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.16%Probability
Root Weakness (CWE)
N/A
CVSS v3.1 Base Metrics — Score 7.8 (HIGH)
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Linux Linux >= 142586409c8be7dc071bb94d7cd2d69ccfd99b6b and < 877423f595b60f8fe7c18b64a5d283d9e1732a13
  • Linux Linux >= 142586409c8be7dc071bb94d7cd2d69ccfd99b6b and < 6248eb1833ff0adfdbbadd5f846c2f22e02a01b0
  • Linux Linux >= 142586409c8be7dc071bb94d7cd2d69ccfd99b6b and < ef81e4a1628ecfb9cfc442de10883f383faf17a1
  • Linux Linux >= 142586409c8be7dc071bb94d7cd2d69ccfd99b6b and < 928a8e9f523df845fc496bcb9811013b67aabec5
  • Linux Linux >= 2.6.27
Patched Versions
  • Linux Linux 877423f595b60f8fe7c18b64a5d283d9e1732a13
  • Linux Linux 6248eb1833ff0adfdbbadd5f846c2f22e02a01b0
  • Linux Linux ef81e4a1628ecfb9cfc442de10883f383faf17a1
  • Linux Linux 928a8e9f523df845fc496bcb9811013b67aabec5
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