CVE-2026-64219
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async [Why&How] dc_process_dmub_aux_transfer_async() copies payload->length bytes into a 16-byte stack buffer (dpaux.data[16]) guarded only by an ASSERT(), which is a no-op in release builds. If a caller ever passes length > 16 this results in a stack buffer overflow via memcpy. Additionally, link_index is used to dereference dc->links[] without bounds checking against dc->link_count, risking an out-of-bounds access. Replace the ASSERT with a hard runtime check that returns false when payload->length exceeds the destination buffer size, and add a bounds check for link_index before it is used. (cherry picked from commit ba4caa9fecdf7a38f98c878ad05a8a64148b6881)
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 | affected | git | d6590e3f766e3111dd1beaf88b9384d117acfa6b | Unavailable | None listed |
| 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 | affected | git | 16a5fa57565afb6bf37e18129921c270c93d8e2b | Unavailable | None listed |
| 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 | affected | git | 90c398e822ca76e40548df0c061dd4f93ea92d71 | Unavailable | None listed |
| 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 | affected | git | 3265f3ed373fb8048be713aadcdf702579a0e53d | Unavailable | None listed |
| 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 | affected | git | 1ecde19bfce6535bffddad1139ff466b6d401b8e | Unavailable | None listed |
| 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 | affected | git | 1c8c6e912f2945b2a3e669afca6b52174b88e86e | Unavailable | None listed |
| 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 | affected | git | 6c92f6d9600efa3ef0d9e560a2b52776d9803c29 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.13 | Unavailable | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.142 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.92 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.34 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.11 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |