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CVE-2024-27396

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: gtp: Fix Use-After-Free in gtp_dellink Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal of gtp_de…

Published May 14, 2024CWE-416EPSS 0.24%

Overview

CVE-2024-27396 is a high-severity vulnerability. It was published on May 14, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, 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, the following vulnerability has been resolved:

net: gtp: Fix Use-After-Free in gtp_dellink

Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal

of gtp_dellink, is not part of the RCU read critical section, it

is possible that the RCU grace period will pass during the traversal and

the key will be free.

To prevent this, it should be changed to hlist_for_each_entry_safe.

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/07b20d0a3dc13fb1adff10b60021a4924498da58Refgit.kernel.org/stable/c/0caff3e6390f840666b8dc1ecebf985c2ef3f1ddRefgit.kernel.org/stable/c/25a1c2d4b1fcf938356a9688a96a6456abd44b29Refgit.kernel.org/stable/c/2aacd4de45477582993f8a8abb9505a06426bfb6Refgit.kernel.org/stable/c/2e74b3fd6bf542349758f283676dff3660327c07Refgit.kernel.org/stable/c/718df1bc226c383dd803397d7f5d95557eb81ac7Refgit.kernel.org/stable/c/cd957d1716ec979d8f5bf38fc659aeb9fdaa2474Refgit.kernel.org/stable/c/f2a904107ee2b647bb7794a1a82b67740d7c8a64Refgit.kernel.org/stable/c/07b20d0a3dc13fb1adff10b60021a4924498da58Refgit.kernel.org/stable/c/0caff3e6390f840666b8dc1ecebf985c2ef3f1dd

How CyberStrike helps

Frequently asked questions

What is CVE-2024-27396?

CVE-2024-27396 is a high-severity vulnerability. It was published on May 14, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-27396?

This vulnerability has a CVSS 3.1 base score of 7.8, 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-2024-27396?

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-2024-27396?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-27396 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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