What is the severity of CVE-2025-37846?

CVE-2025-37846 has a high severity rating due to the risk of potential out-of-bounds access in the Linux kernel.

How do I fix CVE-2025-37846?

To fix CVE-2025-37846, update the Linux kernel to the latest version that includes the patch.

What versions of the Linux kernel are affected by CVE-2025-37846?

CVE-2025-37846 affects versions of the Linux kernel prior to 2de451a329cf662b.

What are the potential impacts of CVE-2025-37846?

The potential impacts of CVE-2025-37846 include application crashes and security vulnerabilities due to out-of-bounds access.

Is CVE-2025-37846 limited to specific architectures?

Yes, CVE-2025-37846 specifically affects the arm64 architecture within the Linux kernel.

Vulnerability/
CVE-2025-37846

9/5/2025

CVE-2025-37846: arm64: mops: Do not dereference src reg for a set operation

First published: Fri May 09 2025(Updated: )

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.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected Software	Affected Version	How to fix
Linux Kernel	<2de451a329cf662b

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2025-37846?
CVE-2025-37846 has a high severity rating due to the risk of potential out-of-bounds access in the Linux kernel.
How do I fix CVE-2025-37846?
To fix CVE-2025-37846, update the Linux kernel to the latest version that includes the patch.
What versions of the Linux kernel are affected by CVE-2025-37846?
CVE-2025-37846 affects versions of the Linux kernel prior to 2de451a329cf662b.
What are the potential impacts of CVE-2025-37846?
The potential impacts of CVE-2025-37846 include application crashes and security vulnerabilities due to out-of-bounds access.
Is CVE-2025-37846 limited to specific architectures?
Yes, CVE-2025-37846 specifically affects the arm64 architecture within the Linux kernel.

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