What’s Vulnerable › Vulnerabilities

CVE-2025-68190: drm/amdgpu/atom: Check kcalloc() for WS buffer in amdgpu_atom_execute_table_locked()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-16 · updated 2026-10-14

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/atom: Check kcalloc() for WS buffer in amdgpu_atom_execute_table_locked() kcalloc() may fail. When WS is non-zero and allocation fails, ectx.ws remains NULL while ectx.ws_size is set, leading to a potential NULL pointer dereference in atom_get_src_int() when accessing WS entries. Return -ENOMEM on allocation failure to avoid the NULL dereference.

Affected products

• Linux kernel: 4.2 — fixed in 6.18

How to fix

Upgrade to a fixed version: Linux kernel 6.18. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0b52e3192181b4de58844faedd2928e5c6ca0e06
• https://git.kernel.org/stable/c/35f3fb86bb0158a298d6834e7e110dcaf07f490c
• https://git.kernel.org/stable/c/47252c7d5559d8776ad336be9c955d8404e7ae69
• https://git.kernel.org/stable/c/73853208a497a036596dcf9efbff8ce927651d3a
• https://git.kernel.org/stable/c/88d198836f628c57536c6c71d13e90c5d15fbf1a
• https://git.kernel.org/stable/c/997e28d3d00a1d30649629515e4402612921205b
• https://git.kernel.org/stable/c/cc9a8e238e42c1f43b98c097995137d644b69245

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