CVE-2025-37763 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/imagination: take paired job reference

For paired jobs have the fragment job take a reference on the geometry job so that the geometry job cannot be freed until the fragment job has finished with it.

The geometry job structure is accessed when the fragment job is being prepared by the GPU scheduler. Taking the reference prevents the geometry job being freed until the fragment job no longer requires it.

Fixes a use after free bug detected by KASAN:

[ 124.256386] BUG: KASAN: slab-use-after-free in pvr_queue_prepare_job+0x108/0x868 [powervr] [ 124.264893] Read of size 1 at addr ffff0000084cb960 by task kworker/u16:4/63

Reference

https://git.kernel.org/stable/c/4ba2abe154ef68f9612eee9d6fbfe53a1736b064 https://git.kernel.org/stable/c/b5a6f97a78e2fc008fd6503b7040cb7e1120b873 https://git.kernel.org/stable/c/c90b95e12eb88d23740e5ea2c43d71675d17ac8d