Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2025-71161

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: dm-verity: disable recursive forward error correction There are two problems with the recursive correction: 1.

Published Jan 23, 2026CWE-193EPSS 0.41%

Overview

CVE-2025-71161 is a high-severity vulnerability. It was published on January 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

dm-verity: disable recursive forward error correction

There are two problems with the recursive correction:

1. It may cause denial-of-service. In fec_read_bufs, there is a loop that

has 253 iterations. For each iteration, we may call verity_hash_for_block

recursively. There is a limit of 4 nested recursions - that means that

there may be at most 253^4 (4 billion) iterations. Red Hat QE team

actually created an image that pushes dm-verity to this limit - and this

image just makes the udev-worker process get stuck in the 'D' state.

2. It doesn't work. In fec_read_bufs we store data into the variable

"fio->bufs", but fio bufs is shared between recursive invocations, if

"verity_hash_for_block" invoked correction recursively, it would

overwrite partially filled fio->bufs.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/232948cf600fba69aff36b25d85ef91a73a35756Refgit.kernel.org/stable/c/4220cb37406915c926c0e4a3dbab77cd9cceeb1eRefgit.kernel.org/stable/c/897d9006e75f46f8bd7df78faa424327ae6a4bcfRefgit.kernel.org/stable/c/8b821ca892cfeeaf0bedc9fc72717294f67144d5Refgit.kernel.org/stable/c/d9f3e47d3fae0c101d9094bc956ed24e7a0ee801Refgit.kernel.org/stable/c/e227d2b229c7529bd98d348efc55262ccf24ab35Refcert-portal.siemens.com/productcert/html/ssa-019113.htmlRefcert-portal.siemens.com/productcert/html/ssa-082556.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-71161?

CVE-2025-71161 is a high-severity vulnerability. It was published on January 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-71161?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-71161?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-71161?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-71161 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2025

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999