Riskcovery

CVE-2026-93076

dax/fsdev: clear vmemmap_shift when binding static pgmap

State
Published
Severity
Not scored
Published
Sep 17, 2026
Updated
Oct 19, 2026
Reserved
Sep 17, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

dax/fsdev: clear vmemmap_shift when binding static pgmap

Clear pgmap->vmemmap_shift for static DAX devices. When rebinding a static device from device_dax (which may set vmemmap_shift based on alignment) to fsdev_dax, the stale vmemmap_shift persists on the shared pgmap. Explicitly zero it before devm_memremap_pages() so the vmemmap is built for order-0 folios as fsdev requires.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d5406bd458b0ac10b1301a4d5801d85c8f648637 to before d298a0513aaf7d48f2a9f4a90041de910750cfcfAffected
  • d5406bd458b0ac10b1301a4d5801d85c8f648637 to before e0239229931faf9ca3367e3befcf16f77b2cd45bAffected
LinuxLinux
  • 7.1Affected
  • before 7.1Not affected
  • 7.2.6 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.