CVE-2026-97451 ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
An integer overflow in the Linux kernel's ACPICA component allows negative size parameters in memcpy, potentially leading to memory corruption or crashes.
- 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-2026-97451?
CVE-2026-97451 is a high-severity 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:
ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
Add overflow check for Index + Length to prevent integer overflow when calculating the truncation length. This prevents negative size parameter being passed to memcpy().
Which versions are affected by CVE-2026-97451?
How do I fix CVE-2026-97451?
Apply the vendor's patch.
Is CVE-2026-97451 being exploited?
There is no known exploitation of CVE-2026-97451 in the wild and no public exploit code.
Sources
Also known as AZL-103952, BELL-CVE-2026-97451, DEBIAN-CVE-2026-97451, GHSA-w3m4-cvqw-754j, UBUNTU-CVE-2026-97451.