CVE-2024-42283

5.5 · MEDIUM

Published Aug 17, 2024 linux CWE-908 EPSS 0.24% (15th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-42283 is a medium-severity vulnerability affecting linux linux_kernel. 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 and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor	Product	Versions	Status
linux	linux_kernel	>= 5.3, < 5.4.282	Affected

References

Ref git.kernel.org/stable/c/1377de719652d868f5317ba8398b7e74c5f0430b Ref git.kernel.org/stable/c/5cc4d71dda2dd4f1520f40e634a527022e48ccd8 Ref git.kernel.org/stable/c/6d745cd0e9720282cd291d36b9db528aea18add2 Ref git.kernel.org/stable/c/7704460acd7f5d35eb07c52500987dc9b95313fb Ref git.kernel.org/stable/c/9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0 Ref git.kernel.org/stable/c/a13d3864b76ac87085ec530b2ff8e37482a63a96 Ref git.kernel.org/stable/c/fd06cb4a5fc7bda3dea31712618a62af72a1c6cb Ref lists.debian.org/debian-lts-announce/2024/10/msg00003.html Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html Ref cert-portal.siemens.com/productcert/html/ssa-265688.html

Frequently Asked Questions

What is CVE-2024-42283?

CVE-2024-42283 is a medium-severity vulnerability affecting linux linux_kernel. 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?

How can CyberStrike help with CVE-2024-42283?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-42283 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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