CVE-2026-93070 media: ipu6: Do not free aux device pdata after init
A double-free vulnerability in the Linux kernel IPU6 media driver allows attackers to cause denial of service or potentially execute code.
- 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-2026-93070?
CVE-2026-93070 is a high-severity use after free 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: ipu6: Do not free aux device pdata after init
ipu6_bus_initialize_device() stores the isys/psys pdata pointer in struct ipu6_bus_device and initializes the auxiliary device. After that point, error unwinding must drop the auxiliary device reference and let ipu6_bus_release() free both the bus device and adev->pdata.
The isys and psys init paths already call put_device() when MMU initialization fails, and ipu6_bus_add_device() calls auxiliary_device_uninit() on auxiliary_device_add() failure. Both paths therefore run the bus release callback. The extra kfree(pdata) in the callers can release the same object a second time.
Remove the manual pdata frees after the auxiliary device has been initialized.
This issue was found by a static analysis checker and confirmed by manual source review.
Which versions are affected by CVE-2026-93070?
How do I fix CVE-2026-93070?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-93070 being exploited?
There is no known exploitation of CVE-2026-93070 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-93070, DEBIAN-CVE-2026-93070, GHSA-2q2h-4p8v-3772, UBUNTU-CVE-2026-93070.