drm/gud: fix out-of-bounds write in gud_plane_atomic_check() (Linux Linux)

CVE-2026-98181
Not available

At a glance

Source
NVD
EPSS
EPSS 0.17 % · percentile 7 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Received

Description

In the Linux kernel, the following vulnerability has been resolved: drm/gud: fix out-of-bounds write in gud_plane_atomic_check() The plane property loop uses req->properties[num_properties + i] as write index while simultaneously incrementing `num_properties` inside the loop. At iteration i, num_properties has also incremented by i, so the write is done at `initial_num_properties + 2*i`, skipping every other index and advancing by 2 per iteration. With just 2 connector and 32 plane properties the last write happens at index 64, one slot past the end of the 64-slot (indices 0–63) allocation. A USB device can trigger OOB by advertising the maximum number of properties. Fix by dropping the redundant `+ i`; num_properties is already the correct running index, as gud_connector_fill_properties() fills the preceding slots.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 < ee04903fe6a098160d20dde4fc5af4cb42846735 ; affected 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 < 4153a9e008f2512bd3cf90a319436865847369b9 ; affected 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 < 5f5e565410b4987e9663f599f9ab0c350f8338d4 ; affected 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 < 7e630edb22088df7aa0d55b02237a71e4c9a523d ; affected 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 < 2c92af27ad23e2fbc0367b11a9027d36d94ef4b3 ; affected 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 < ea57100955c1c2a525ba1a98c18d9a05b25aeedb
Linux · Linuxaffected 5.13 ; unaffected 0 < 5.13 ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* ; unaffected 6.12.112 ≤ 6.12.*

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