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CVE-2026-63878

drm/amdgpu: check num_entries in GEM_OP GET_MAPPING_INFO

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)
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 4d82724f7f2b847eb0454b1aab5450545b39abd4
Version < f059b4c493df3e54fe3ffe4658009c31864275da
Status affected
Version 4d82724f7f2b847eb0454b1aab5450545b39abd4
Version < 967a00b8e06a7734aded23861faba9ee2462be87
Status affected
Version 4d82724f7f2b847eb0454b1aab5450545b39abd4
Version < a1ba4594232c87c3b8defd6f89a2e40f8b08395d
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.18
Status affected
Version 0
Version < 6.18
Status unaffected
Version <= 6.18.*
Version 6.18.35
Status unaffected
Version <= 7.0.*
Version 7.0.12
Status unaffected
Version <= *
Version 7.1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.098
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/f059b4c493df3e54fe3ffe4658009c31864275da
https://git.kernel.org/stable/c/967a00b8e06a7734aded23861faba9ee2462be87
https://git.kernel.org/stable/c/a1ba4594232c87c3b8defd6f89a2e40f8b08395d