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CVE-2026-68433

8.6 · HIGH

In the Linux kernel, the following vulnerability has been resolved: libceph: bound get_version reply decode to front len handle_get_version_reply() uses msg->front_alloc_len as the decode boundar…

Published Aug 12, 2026EPSS 0.29%

Overview

CVE-2026-68433 is a high-severity vulnerability. It was published on August 12, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, 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:

libceph: bound get_version reply decode to front len

handle_get_version_reply() uses msg->front_alloc_len as the decode

boundary for MON_GET_VERSION_REPLY. That is the size of the reused

reply buffer, not the number of bytes actually received.

A truncated reply can therefore pass ceph_decode_need() and decode the

second u64 from stale tail bytes left in the buffer by an earlier

message, causing an uninitialized memory read.

Use msg->front.iov_len as the receive-side decode boundary, matching

other libceph reply handlers and limiting decoding to the bytes that

were actually read from the wire.

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/0d934c934ec746d53fc7e4f53239792647bbae63Refgit.kernel.org/stable/c/1307028f082756bf453e1889aee9983d30643a4bRefgit.kernel.org/stable/c/340e0386aa39da181015bee38f309018c335ce16Refgit.kernel.org/stable/c/4e7ebfaa0d14cf50e44041bfde38070d6dbc019fRefgit.kernel.org/stable/c/72a35070fcefa229b1b031aa7482ad3788e18f07Refgit.kernel.org/stable/c/d3c32939fa0e3ee9b883b9a0fd1972c5c444e3d0Refgit.kernel.org/stable/c/d60de8253c85a02d0e6194b0735e7a562981a04cRefgit.kernel.org/stable/c/f6cbf6878f3a1503c872ba8f1e69a58ee68d8b2e

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68433?

CVE-2026-68433 is a high-severity vulnerability. It was published on August 12, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2026-68433?

This vulnerability has a CVSS 3.1 base score of 8.6, 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-2026-68433?

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-2026-68433?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68433 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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