CVE-2025-37764 drm/imagination: fix firmware memory leaks
A memory leak in the Linux kernel's Imagination DRM driver allows attackers to exhaust system memory, potentially causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-37764?
CVE-2025-37764 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
drm/imagination: fix firmware memory leaks
Free the memory used to hold the results of firmware image processing when the module is unloaded.
Fix the related issue of the same memory being leaked if processing of the firmware image fails during module load.
Ensure all firmware GEM objects are destroyed if firmware image processing fails.
Fixes memory leaks on powervr module unload detected by Kmemleak:
unreferenced object 0xffff000042e20000 (size 94208): comm "modprobe", pid 470, jiffies 4295277154 hex dump (first 32 bytes): 02 ae 7f ed bf 45 84 00 3c 5b 1f ed 9f 45 45 05 .....E..<[...EE. d5 4f 5d 14 6c 00 3d 23 30 d0 3a 4a 66 0e 48 c8 .O].l.=#0.:Jf.H. backtrace (crc dd329dec): kmemleak_alloc+0x30/0x40 ___kmalloc_large_node+0x140/0x188 __kmalloc_large_node_noprof+0x2c/0x13c __kmalloc_noprof+0x48/0x4c0 pvr_fw_init+0xaa4/0x1f50 [powervr]
unreferenced object 0xffff000042d20000 (size 20480): comm "modprobe", pid 470, jiffies 4295277154 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 09 00 00 00 0b 00 00 00 ................ 00 00 00 00 00 00 00 00 07 00 00 00 08 00 00 00 ................ backtrace (crc 395b02e3): kmemleak_alloc+0x30/0x40 ___kmalloc_large_node+0x140/0x188 __kmalloc_large_node_noprof+0x2c/0x13c __kmalloc_noprof+0x48/0x4c0 pvr_fw_init+0xb0c/0x1f50 [powervr]
Weakness: CWE-401
Which versions are affected by CVE-2025-37764?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-37764?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-37764 being exploited?
There is no known exploitation of CVE-2025-37764 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-37764, DEBIAN-CVE-2025-37764, GHSA-ffcr-3gvq-xq62, ROOT-OS-UBUNTU-2404-CVE-2025-37764, UBUNTU-CVE-2025-37764.