CVE-2026-97412 pds_core: quiesce DMA before freeing resources
A use-after-free vulnerability in the pds_core driver allows attackers to execute code or escalate privileges by exploiting DMA operations on freed memory.
- 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-2026-97412?
CVE-2026-97412 is an use after free vulnerability in Linux, published on 24 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:
pds_core: quiesce DMA before freeing resources
pdsc_teardown() frees DMA buffers but does not disable bus mastering, leaving the device able to perform DMA after the buffers are freed. This can lead to use-after-free if the device writes to freed memory.
Add pci_clear_master() to pdsc_teardown() to disable bus mastering before freeing resources, ensuring all DMA is quiesced.
Add pci_set_master() to pdsc_setup() to re-enable bus mastering, which is needed for the firmware recovery path since pdsc_teardown() now disables it.
Which versions are affected by CVE-2026-97412?
How do I fix CVE-2026-97412?
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-2026-97412 being exploited?
There is no known exploitation of CVE-2026-97412 in the wild and no public exploit code.
Sources
Also known as AZL-103973, BELL-CVE-2026-97412, DEBIAN-CVE-2026-97412, GHSA-vh7w-pf8m-646h, UBUNTU-CVE-2026-97412.