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CVE-2023-1077

7.0 · HIGH

In the Linux kernel, pick_next_rt_entity() may return a type confused entry, not detected by the BUG_ON condition, as the confused entry will not be NULL, but list_head.The buggy error condition wo…

Published Mar 27, 2023CWE-843EPSS 0.28%

Overview

CVE-2023-1077 is a high-severity vulnerability. It was published on March 27, 2023 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, pick_next_rt_entity() may return a type confused entry, not detected by the BUG_ON condition, as the confused entry will not be NULL, but list_head.The buggy error condition would lead to a type confused entry with the list head,which would then be used as a type confused sched_rt_entity,causing memory corruption.

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/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7c4a5b89a0b5a57a64b601775b296abf77a9fe97Reflists.debian.org/debian-lts-announce/2023/05/msg00005.htmlReflists.debian.org/debian-lts-announce/2024/01/msg00004.htmlRefsecurity.netapp.com/advisory/ntap-20230511-0002/Refgit.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7c4a5b89a0b5a57a64b601775b296abf77a9fe97Reflists.debian.org/debian-lts-announce/2023/05/msg00005.htmlReflists.debian.org/debian-lts-announce/2024/01/msg00004.htmlRefsecurity.netapp.com/advisory/ntap-20230511-0002/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-1077?

CVE-2023-1077 is a high-severity vulnerability. It was published on March 27, 2023 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2023-1077?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-1077?

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-2023-1077?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-1077 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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