CVE-2025-37846: Linux Kernel

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: arm64: mops: Do not dereference src reg for a set operation The source register is not used for SET* and reading it can result in a UBSAN out-of-bounds array access error, specifically when the MOPS exception is taken from a SET* sequence with XZR (reg 31) as the source. Architecturally this is the only case where a src/dst/size field in the ESR can be reported as 31. Prior to 2de451a329cf662b the code in do_el0_mops() was benign as the use of pt_regs_read_reg() prevented the out-of-bounds access.

Affected products

• Linux Linux Kernel: from 6.7, before 6.12.24 (fixed in 6.12.24); from 6.13, before 6.13.12 (fixed in 6.13.12); from 6.14, before 6.14.3 (fixed in 6.14.3)

Published 2025-05-09. Last modified 2026-06-17.