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CVE-2026-72033

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: orangefs: keep the readdir entry size 64-bit in fill_from_part() fill_from_part() computes the size of a directory entry in siz…

Published Aug 15, 2026EPSS 0.79%

Overview

CVE-2026-72033 is a critical-severity vulnerability. It was published on August 15, 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:

orangefs: keep the readdir entry size 64-bit in fill_from_part()

fill_from_part() computes the size of a directory entry in size_t but

stores it in a __u32. An entry length near U32_MAX wraps it to a small

value, bypasses the bounds check, and is then used to index the entry,

reading far past the directory part -- an out-of-bounds read that oopses

the kernel.

Compute the size as a u64 so it cannot truncate; the bounds check then

rejects the entry. The trailer is supplied by the userspace client.

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/07c05601a9a8e5d4481b2a4a16dc0e3c5bc63ad9Refgit.kernel.org/stable/c/1679780f482feeb82acb5995587d4fb1d1fe82fdRefgit.kernel.org/stable/c/18227a6bc98bd0ba96ed3ce9d5b28776a5a28dfcRefgit.kernel.org/stable/c/36723b28e3293047f087f4501f1ef4ead418dd84Refgit.kernel.org/stable/c/82fc886e244c76fadf05ef1958aaf8815478ccdeRefgit.kernel.org/stable/c/a72bbb43689591c9d36e3bb45c2d4e688cf92682Refgit.kernel.org/stable/c/e3d325c0bdb7bc5d1b4cc8d8441d79794cd03729Refgit.kernel.org/stable/c/fdf06a1b66ff39664b01c6bb6a2aa98d81e8ebe1

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72033?

CVE-2026-72033 is a critical-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-72033?

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-2026-72033?

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-2026-72033?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72033 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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