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)
References
Configurations
Configuration 1 (hide)
|
History
30 Oct 2026, 14:49
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/967a00b8e06a7734aded23861faba9ee2462be87 - Patch | |
| References | () https://git.kernel.org/stable/c/a1ba4594232c87c3b8defd6f89a2e40f8b08395d - Patch | |
| References | () https://git.kernel.org/stable/c/f059b4c493df3e54fe3ffe4658009c31864275da - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* |
Information
Published : 2026-07-19 16:17
Updated : 2026-10-30 14:49
NVD link : CVE-2026-63878
Mitre link : CVE-2026-63878
CVE.ORG link : CVE-2026-63878
JSON object : View
Products Affected
linux
- linux_kernel
CWE