CVE-2026-93071 media: bcm2835-unicam: Fix asc leaked in error/remove path
A memory leak in the BCM2835 Unicam driver allows local attackers to exhaust kernel memory, potentially causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93071?
CVE-2026-93071 is a memory corruption vulnerability in Linux, published on 17 Sep 2026. 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:
media: bcm2835-unicam: Fix asc leaked in error/remove path
v4l2_async_nf_add_fwnode_remote() allocates the asc, which is freed when v4l2_async_nf_cleanup() is called.
Call v4l2_async_nf_cleanup() properly in the driver paths.
Discovered with kmemleak after rmmod:
unreferenced object 0xffff000084526b80 (size 64): comm "modprobe", pid 185, jiffies 4295013512 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 e8 0d ff bf 00 00 ff ff ................ 40 83 bc 84 00 00 ff ff 60 83 bc 84 00 00 ff ff @.......`....... backtrace (crc ac584083): [<00000000ffb081a7>] kmemleak_alloc+0x38/0x44 [<00000000d2fd9301>] __kmalloc+0x1b0/0x250 [<000000004dd5354d>] __v4l2_async_nf_add_fwnode+0x28/0x9c [<0000000067587657>] __v4l2_async_nf_add_fwnode_remote+0x3c/0x64
Which versions are affected by CVE-2026-93071?
How do I fix CVE-2026-93071?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-93071 being exploited?
There is no known exploitation of CVE-2026-93071 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-93071, DEBIAN-CVE-2026-93071, GHSA-m33f-v49h-44x7, UBUNTU-CVE-2026-93071.