PT-2025-6061 · Linux+5 · Linux Kernel+5
Maíra Canal
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Published
2025-01-22
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Updated
2025-05-20
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CVE-2025-21688
CVSS v3.1
4.7
Medium
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A race condition exists in the Linux kernel's V3D driver, specifically in the
drm/v3d component. This condition occurs when the job pointer is assigned to NULL before signaling the fence, leading to a potential NULL pointer dereference. The issue arises from the interaction between the DRM scheduler workqueue and the IRQ execution thread. When a new job is executed and the fence is signaled, the IRQ execution thread may set the job pointer to NULL simultaneously with the run job() function assigning a new job to the pointer. This can cause a crash when the new job completes and the GPU emits an interrupt, triggering the v3d irq() function.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Race Condition
NULL Pointer Dereference
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Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linux Kernel
Red Os
Suse