CVE-2026-63878

CVE CVE-2026-63878EUVD EUVD-2026-45763Published 2026-07-19T14:54:50.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: check num_entries in GEM_OP GET_MAPPING_INFO kvcalloc(args->num_entries, sizeof(*vm_entries), GFP_KERNEL) at amdgpu_gem.c:1050 uses the user-supplied num_entries directly without any upper bounds check. Since num_entries is a __u32 and sizeof(drm_amdgpu_gem_vm_entry) is 32 bytes, a large num_entries produces an allocation exceeding INT_MAX, triggering WARNING in __kvmalloc_node_noprof(), causing a kernel WARNING, TAINT_WARN, and panic on CONFIG_PANIC_ON_WARN=y systems. Add a size bounds check before we invoke the kvzalloc() to reject oversized num_entries early with -EINVAL. (cherry picked from commit 1fe7bf5457f6efd7be60b17e23163ba54341d73d)

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 4d82724f7f2b847eb0454b1aab5450545b39abd4 <f059b4c493df3e54fe3ffe4658009c31864275da; patch: 7.0.12; patch: 0; patch: 6.18.35; 4d82724f7f2b847eb0454b1aab5450545b39abd4 <a1ba4594232c87c3b8defd6f89a2e40f8b08395d; 6.18; 4d82724f7f2b847eb0454b1aab5450545b39abd4 <967a00b8e06a7734aded23861faba9ee2462be87; patch: 7.1

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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