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CVE-2026-97413

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs-srv: Fix integer underflow in process_read and process_write usr_len is read from a network-supplied message field (l…

Published Sep 24, 2026EPSS 0.50%

Overview

CVE-2026-97413 is a critical-severity vulnerability. It was published on September 24, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. 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:

RDMA/rtrs-srv: Fix integer underflow in process_read and process_write

usr_len is read from a network-supplied message field (le16_to_cpu)

and used to compute data_len = off - usr_len without validating that

usr_len <= off. A malicious RDMA client can send usr_len > off causing

an integer underflow, resulting in data_len wrapping to a huge size_t

value which is then passed to the rdma_ev callback as a memory length,

leading to out-of-bounds memory access.

Fix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids()

in both process_read() and process_write(), ensuring the early return

path acquires no reference and has no resource leak.

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/24ad03bfeda05fca04c56677e57fd3d6bc3e9978Refgit.kernel.org/stable/c/2c52b2afded988233cd4ccc185cf5147bbc77a76Refgit.kernel.org/stable/c/54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5Refgit.kernel.org/stable/c/6b1e26e70d7ca9f0906af2283558a530eeb1f066Refgit.kernel.org/stable/c/b042b4947752df0b3d16e683ac09fb4f7f0e33e0Refgit.kernel.org/stable/c/c76e9123ab91a903396d26e6ab1b5caae5c6b149

How CyberStrike helps

Frequently asked questions

What is CVE-2026-97413?

CVE-2026-97413 is a critical-severity vulnerability. It was published on September 24, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-97413?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-97413?

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-2026-97413?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-97413 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.

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