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CVE-2026-53355

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: net: rds: clear i_sends on setup unwind The RDS IB connection teardown path is written so it can run during partial startup and…

Published Jul 1, 2026CWE-476EPSS 0.42%

Overview

CVE-2026-53355 is a critical-severity vulnerability. It was published on July 1, 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:

net: rds: clear i_sends on setup unwind

The RDS IB connection teardown path is written so it can run during

partial startup and on repeated shutdown attempts. It uses NULL

pointers to distinguish resources that are still owned from resources

that have already been released.

When rds_ib_setup_qp() fails after allocating i_sends but before

allocating i_recvs, the sends_out path frees i_sends without clearing

the pointer. A later shutdown pass can still treat that stale pointer

as a live send ring allocation.

Clear i_sends after vfree() in the error unwind path so the existing

shutdown logic continues to use the correct ownership state.

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/1d4ec754ee3871f7e3670c67bb0298c9c5760926Refgit.kernel.org/stable/c/20cf0fb715c41111469577e85e35d15f099473e0Refgit.kernel.org/stable/c/27040bbca289a704eafcacca167d310c6ce2b1bcRefgit.kernel.org/stable/c/29d940026dce39e3018dab6f67c9427249321270Refgit.kernel.org/stable/c/2c5e5e4a5970c41f16e3ad801a78719ed5d5c71bRefgit.kernel.org/stable/c/66cccec111421a10efdc2c74499d15b93e7acae5Refgit.kernel.org/stable/c/e7cf30aa5f1fc6c2a86df65df8b731df20e44d79Refgit.kernel.org/stable/c/f16ad421a4e3e7db2d14bdf3b16f583bc4f3b30a

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53355?

CVE-2026-53355 is a critical-severity vulnerability. It was published on July 1, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-53355?

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-2026-53355?

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-2026-53355?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53355 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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