CVE-2025-37951

In the Linux kernel, the following vulnerability has been resolved:

drm/v3d: Add job to pending list if the reset was skipped

When a CL/CSD job times out, we check if the GPU has made any progress since the last timeout. If so, instead of resetting the hardware, we skip the reset and let the timer get rearmed. This gives long-running jobs a chance to complete.

However, when timedout_job() is called, the job in question is removed from the pending list, which means it wont be automatically freed through free_job(). Consequently, when we skip the reset and keep the job running, the job wont be freed when it finally completes.

This situation leads to a memory leak, as exposed in [1] and [2].

Similarly to commit 704d3d60fec4 (drm/etnaviv: dont block scheduler when GPU is still active), this patch ensures the job is put back on the pending list when extending the timeout.

Weakness

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Affected Software

Potential Mitigations

• Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
• For example, glibc in Linux provides protection against free of invalid pointers.
• When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
• To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.

References

• https://git.kernel.org/stable/c/12125f7d9c15e6d8ac91d10373b2db2f17dcf767
• https://git.kernel.org/stable/c/35e4079bf1a2570abffce6ababa631afcf8ea0e5
• https://git.kernel.org/stable/c/422a8b10ba42097a704d6909ada2956f880246f2
• https://git.kernel.org/stable/c/5235b56b7e5449d990d21d78723b1a5e7bb5738e
• https://git.kernel.org/stable/c/a5f162727b91e480656da1876247a91f651f76de
• https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html