CVE-2024-26817: amdkfd: use calloc instead of kzalloc to avoid integer overflow
In the Linux kernel, the following vulnerability has been resolved:
amdkfd: use calloc instead of kzalloc to avoid integer overflow
This uses calloc instead of doing the multiplication which might
overflow.
Security readout for executives and security teams
Plain-English summary
This is a Linux kernel flaw in the AMD KFD graphics compute driver. The issue is an integer overflow during memory allocation, which the kernel fixed by using an overflow-aware allocation routine. Public sources do not provide a CVSS score, confirmed impact, or active exploitation evidence.
Executive priority
Treat this as a kernel patching item for AMD GPU Linux environments, not an internet-wide emergency based on current evidence. Prioritize standard kernel update cycles, with faster handling for GPU compute infrastructure.
Technical view
CVE-2024-26817 affects the Linux kernel amdkfd component. The fix replaces manual multiplication passed to kzalloc with calloc-style allocation to avoid integer overflow. Stable kernel fixes are referenced across maintained branches, including 4.19.312, 5.4.274, 5.10.215, 5.15.155, 6.1.86, 6.6.27, 6.8.6, and 6.9.
Likely exposure
Exposure is most likely on Linux systems running affected kernel versions with the AMD KFD driver present or relevant, such as AMD GPU compute workstations or servers. The source data does not prove every Linux deployment is practically reachable.
Exploitation context
The CVE is not listed as KEV, and the provided sources do not cite active exploitation or public weaponization. The available evidence only describes the vulnerable allocation pattern and kernel stable fixes.
Researcher notes
The key technical detail is integer overflow avoidance in amdkfd allocation sizing. Public data lacks CVSS, exploitability analysis, and a concrete privilege or impact statement, so validation should focus on kernel branch, distro backport status, and amdkfd exposure.
Mitigation direction
Update to a fixed vendor or stable kernel release.
Prioritize Linux systems using AMD GPU compute features.
Review Debian, Fedora, and distribution kernel advisories for packaged fixes.
Reboot systems after kernel updates where required.
Check vendor guidance if fixed packages are unavailable.
Validation and detection
Inventory Linux kernel versions across affected assets.
Identify systems where AMD KFD or AMD GPU compute is used.
Compare installed kernels with fixed stable branch versions.
Confirm distro security updates include CVE-2024-26817.
Track exceptions until vendor-fixed kernels are deployed.
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-2024-26817 mapping review
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