CVE-2026-64219

CVE CVE-2026-64219EUVD EUVD-2026-48627Published 2026-07-24T15:23:06.000ZLast changed 2026-08-05T12:40:07.000ZCVSS 7.0

What the advisory describes

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)

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 <16a5fa57565afb6bf37e18129921c270c93d8e2b; patch: 6.12.92; patch: 6.1.175; patch: 6.6.142; patch: 0; patch: 7.1; patch: 7.0.11; 5.13; 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 <3265f3ed373fb8048be713aadcdf702579a0e53d; 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 <6c92f6d9600efa3ef0d9e560a2b52776d9803c29; 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 <1ecde19bfce6535bffddad1139ff466b6d401b8e; patch: 6.18.34; 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 <1c8c6e912f2945b2a3e669afca6b52174b88e86e; patch: 5.15.209; 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 <90c398e822ca76e40548df0c061dd4f93ea92d71; 4f8e37dbaf584de6d38f58b3000b0bfd7eaf2ff6 <d6590e3f766e3111dd1beaf88b9384d117acfa6b

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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