Out-of-bounds Read Affecting linux-virt package, versions <6.12.25-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.02% (3rd percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-LINUXVIRT-14048364
  • published19 Nov 2025
  • disclosed9 May 2025

Introduced: 9 May 2025

CVE-2025-37846  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Minimos:latest linux-virt to version 6.12.25-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-virt package and not the linux-virt package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1