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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.
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 v3.1 Base Metrics — Score 7.8 (HIGH)
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Affected & Patched 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
- Linux Linux 877423f595b60f8fe7c18b64a5d283d9e1732a13
- Linux Linux 6248eb1833ff0adfdbbadd5f846c2f22e02a01b0
- Linux Linux ef81e4a1628ecfb9cfc442de10883f383faf17a1
- Linux Linux 928a8e9f523df845fc496bcb9811013b67aabec5