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CVE-2024-42283

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net: nexthop: Initialize all fields in dumped nexthops struct nexthop_grp contains two reserved fields that are not initialized…

Published Aug 17, 2024CWE-908EPSS 0.24%

Overview

CVE-2024-42283 is a medium-severity vulnerability. It was published on August 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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: nexthop: Initialize all fields in dumped nexthops

struct nexthop_grp contains two reserved fields that are not initialized by

nla_put_nh_group(), and carry garbage. This can be observed e.g. with

strace (edited for clarity):

# ip nexthop add id 1 dev lo

# ip nexthop add id 101 group 1

# strace -e recvmsg ip nexthop get id 101

...

recvmsg(... [{nla_len=12, nla_type=NHA_GROUP},

[{id=1, weight=0, resvd1=0x69, resvd2=0x67}]] ...) = 52

The fields are reserved and therefore not currently used. But as they are, they

leak kernel memory, and the fact they are not just zero complicates repurposing

of the fields for new ends. Initialize the full structure.

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/1377de719652d868f5317ba8398b7e74c5f0430bRefgit.kernel.org/stable/c/5cc4d71dda2dd4f1520f40e634a527022e48ccd8Refgit.kernel.org/stable/c/6d745cd0e9720282cd291d36b9db528aea18add2Refgit.kernel.org/stable/c/7704460acd7f5d35eb07c52500987dc9b95313fbRefgit.kernel.org/stable/c/9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0Refgit.kernel.org/stable/c/a13d3864b76ac87085ec530b2ff8e37482a63a96Refgit.kernel.org/stable/c/fd06cb4a5fc7bda3dea31712618a62af72a1c6cbReflists.debian.org/debian-lts-announce/2024/10/msg00003.htmlReflists.debian.org/debian-lts-announce/2025/01/msg00001.htmlRefcert-portal.siemens.com/productcert/html/ssa-265688.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-42283?

CVE-2024-42283 is a medium-severity vulnerability. It was published on August 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-42283?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-42283?

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-2024-42283?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-42283 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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