CVE-2026-72076 Input: ims-pcu - fix out-of-bounds read in ims_pcu_irq() debug logging
A local attacker can trigger an out-of-bounds read in the IMS PCU driver's debug logging, potentially leaking kernel memory contents.
- 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-2026-72076?
CVE-2026-72076 is a vulnerability in Linux, published on 15 Aug 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:
Input: ims-pcu - fix out-of-bounds read in ims_pcu_irq() debug logging
The debug logging in ims_pcu_irq() unconditionally prints data from pcu->urb_in_buf. However, if the interrupt fired for pcu->urb_ctrl, the actual data resides in pcu->urb_ctrl_buf. If urb->actual_length for the control URB exceeds pcu->max_in_size, this leads to an out-of-bounds read.
Fix this by printing from the correct buffer associated with the URB.
Which versions are affected by CVE-2026-72076?
How do I fix CVE-2026-72076?
Apply the vendor's patch.
Is CVE-2026-72076 being exploited?
There is no known exploitation of CVE-2026-72076 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72076, DEBIAN-CVE-2026-72076, GHSA-cxr9-fhw6-hh88, UBUNTU-CVE-2026-72076.