drm/hyperv: Fix address space leak when Hyper-V DRM device is removed (Linux Linux)

CVE-2025-21978
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.19 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: Fix address space leak when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space for the vram, and maps it cacheable. If the device removed, or in the error path for device probing, the MMIO space is released but no unmap is done. Consequently the kernel address space for the mapping is leaked. Fix this by adding iounmap() calls in the device removal path, and in the error path during device probing.

Weaknesses (CWE)

  • CWE-401 — Missing Release of Memory after Effective Lifetime

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected a0ab5abced550ddeefddb06055ed60779a54eb79 < c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e ; affected a0ab5abced550ddeefddb06055ed60779a54eb79 < ad27b4a51495490b815580d9b935e8eee14d1a9c ; affected a0ab5abced550ddeefddb06055ed60779a54eb79 < 24f1bbfb2be77dad82489c1468bbb14312aab129 ; affected a0ab5abced550ddeefddb06055ed60779a54eb79 < 158242b56bf465a73e1edeac0fe828a8acad4499 ; affected a0ab5abced550ddeefddb06055ed60779a54eb79 < aed709355fd05ef747e1af24a1d5d78cd7feb81e
Linux · Linuxaffected 6.0 ; unaffected 0 < 6.0 ; unaffected 6.1.132 ≤ 6.1.* ; unaffected 6.6.84 ≤ 6.6.* ; unaffected 6.12.20 ≤ 6.12.* ; unaffected 6.13.8 ≤ 6.13.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD