Bug 2420316 (CVE-2023-53844)

Summary: CVE-2023-53844 kernel: drm/ttm: Don't leak a resource on swapout move error
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A resource leak was found in the TTM (Translation Table Manager) memory management subsystem of the Linux kernel's DRM (Direct Rendering Manager). When moving a buffer object to system memory for swapout fails, the allocated resource is not properly freed, leading to gradual memory exhaustion on systems with active GPU workloads.
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Description OSIDB Bzimport 2025-12-09 02:02:21 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/ttm: Don't leak a resource on swapout move error

If moving the bo to system for swapout failed, we were leaking
a resource. Fix.
Comment 1 Alexander B 2025-12-10 02:01:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120958-CVE-2023-53844-92b4@gregkh/T