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CVE-2024-47739

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: padata: use integer wrap around to prevent deadlock on seq_nr overflow When submitting more than 2^32 padata objects to padata_…

Published Oct 21, 2024CWE-190EPSS 0.68%

Overview

CVE-2024-47739 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, 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:

padata: use integer wrap around to prevent deadlock on seq_nr overflow

When submitting more than 2^32 padata objects to padata_do_serial, the

current sorting implementation incorrectly sorts padata objects with

overflowed seq_nr, causing them to be placed before existing objects in

the reorder list. This leads to a deadlock in the serialization process

as padata_find_next cannot match padata->seq_nr and pd->processed

because the padata instance with overflowed seq_nr will be selected

next.

To fix this, we use an unsigned integer wrap around to correctly sort

padata objects in scenarios with integer overflow.

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/1b8cf11b3ca593a8802a51802cd0c28c38501428Refgit.kernel.org/stable/c/1bd712de96ad7167fe0d608e706cd60587579f16Refgit.kernel.org/stable/c/46c4079460f4dcaf445860679558eedef4e1bc91Refgit.kernel.org/stable/c/72164d5b648951684b1a593996b37a6083c61d7dRefgit.kernel.org/stable/c/9a22b2812393d93d84358a760c347c21939029a6Refgit.kernel.org/stable/c/9e279e6c1f012b82628b89e1b9c65dbefa8ca25aRefgit.kernel.org/stable/c/ab205e1c3846326f162180e56825b4ba38ce9c30Reflists.debian.org/debian-lts-announce/2025/01/msg00001.htmlReflists.debian.org/debian-lts-announce/2025/03/msg00002.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-47739?

CVE-2024-47739 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-47739?

This vulnerability has a CVSS 3.1 base score of 7.5, 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-2024-47739?

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-2024-47739?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-47739 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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