CVE-2024-26986: drm/amdkfd: Fix memory leak in create_process failure
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Fix memory leak in create_process failure
Fix memory leak due to a leaked mmget reference on an error handling
code path that is triggered when attempting to create KFD processes
while a GPU reset is in progress.
Security readout for executives and security teams
Plain-English summary
This Linux kernel issue is a memory leak in AMD GPU compute handling. It can occur when KFD process creation fails while a GPU reset is already in progress. The public record does not provide a CVSS score, confirmed impact beyond leaked references, or evidence of active exploitation.
Executive priority
Treat as a routine but legitimate kernel maintenance item unless your environment relies heavily on AMD GPU compute. There is no sourced evidence of active exploitation, but kernel memory leaks can still affect availability on exposed workloads.
Technical view
The flaw is in drm/amdkfd create_process error handling. A failed path during GPU reset leaks an mmget reference, leaving memory-accounting state unreleased. Sources identify Linux kernel fixes and Fedora kernel update notices, but do not document privilege requirements, exploitability, or a broader compromise path.
Likely exposure
Exposure is most plausible on Linux systems using affected kernels with AMD GPU KFD support enabled, especially GPU compute or workstation/server workloads. Systems without AMDGPU/KFD usage are less likely to encounter the vulnerable path, based on the described trigger condition.
Exploitation context
CISA KEV is false in the provided bundle. The cited sources describe a kernel bug fix, not active exploitation, public exploit code, or weaponized use. Trigger conditions appear operationally narrow: KFD process creation during an in-progress GPU reset.
Researcher notes
Evidence is limited to the CVE description, Linux stable commits, and Fedora announcements. The public bundle does not provide CVSS, CWE, exploit prerequisites, or proof of security impact beyond the leaked mmget reference on a GPU-reset error path.
Mitigation direction
Apply vendor-supported Linux kernel updates containing the cited stable fixes.
Prioritize GPU compute hosts, AMDGPU workstations, and Fedora systems referenced by the advisories.
Check distribution advisories for exact package versions and reboot requirements.
If patching is delayed, monitor AMDGPU/KFD instability and GPU reset events.
Validation and detection
Inventory Linux kernel versions on systems using AMD GPUs or KFD workloads.
Map installed kernels against vendor advisories and the cited stable fix commits.
Confirm updated kernels are booted, not merely installed.
Review logs for repeated GPU resets or KFD process creation failures.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2024-26986 mapping review
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