Medium 5.5Published Aug 17, 2024

CVE-2024-42283net: nexthop: Initialize all fields in dumped nexthops

Updated under an hour ago (Oct 27, 2026, 8:50 AM ET)

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It affects Linux and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 430a049190de3c9e219f43084de9f1122da04570 before fd06cb4a5fc7bda3dea31712618a62af72a1c6cb; 430a049190de3c9e219f43084de9f1122da04570 builds before 5cc4d71dda2dd4f1520f40e634a527022e48ccd8; 430a049190de3c9e219f43084de9f1122da04570 builds before 9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0; from 430a049190de3c9e219f43084de9f1122da04570 before 1377de719652d868f5317ba8398b7e74c5f0430b; from 430a049190de3c9e219f43084de9f1122da04570 before 7704460acd7f5d35eb07c52500987dc9b95313fb; from 430a049190de3c9e219f43084de9f1122da04570 before a13d3864b76ac87085ec530b2ff8e37482a63a96; 430a049190de3c9e219f43084de9f1122da04570 builds before 6d745cd0e9720282cd291d36b9db528aea18add2	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.3 before 5.4.282; from 5.5 before 5.10.224; from 5.11 before 5.15.165; from 5.16 before 6.1.103; from 6.2 before 6.6.44; from 6.7 before 6.10.3	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.