CVE-2026-89758 Linux Kernel - Denial of Service

Linux kernel contains a memory management vulnerability caused by improper handling of non-present device-private PMDs in queue_folios_pmd(), letting attackers trigger kernel oops or VM_BUG_ON via HMM-based GPU driver migration, exploit requires GPU driver migration of anonymous THP folio.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the kernel version including patch series "mm: handle device-private PMDs in walk callbacks", v3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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