net: nexthop: Initialize all fields in dumped nexthops

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Summary

CVECVE-2024-42283
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-08-17 09:15:09 UTC
Updated2026-05-12 12:17:05 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-908

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 430a049190de3c9e219f43084de9f1122da04570 fd06cb4a5fc7bda3dea31712618a62af72a1c6cb git Not specified
CNA Linux Linux affected 430a049190de3c9e219f43084de9f1122da04570 5cc4d71dda2dd4f1520f40e634a527022e48ccd8 git Not specified
CNA Linux Linux affected 430a049190de3c9e219f43084de9f1122da04570 9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0 git Not specified
CNA Linux Linux affected 430a049190de3c9e219f43084de9f1122da04570 1377de719652d868f5317ba8398b7e74c5f0430b git Not specified
CNA Linux Linux affected 430a049190de3c9e219f43084de9f1122da04570 7704460acd7f5d35eb07c52500987dc9b95313fb git Not specified
CNA Linux Linux affected 430a049190de3c9e219f43084de9f1122da04570 a13d3864b76ac87085ec530b2ff8e37482a63a96 git Not specified
CNA Linux Linux affected 430a049190de3c9e219f43084de9f1122da04570 6d745cd0e9720282cd291d36b9db528aea18add2 git Not specified
CNA Linux Linux affected 5.3 Not specified
CNA Linux Linux unaffected 5.3 semver Not specified
CNA Linux Linux unaffected 5.4.282 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.224 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.165 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.103 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.44 6.6.* semver Not specified
CNA Linux Linux unaffected 6.10.3 6.10.* semver Not specified
CNA Linux Linux unaffected 6.11 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a13d3864b76ac87085ec530b2ff8e37482a63a96 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/1377de719652d868f5317ba8398b7e74c5f0430b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/7704460acd7f5d35eb07c52500987dc9b95313fb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6d745cd0e9720282cd291d36b9db528aea18add2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5cc4d71dda2dd4f1520f40e634a527022e48ccd8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/10/msg00003.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
lists.debian.org/debian-lts-announce/2025/01/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/fd06cb4a5fc7bda3dea31712618a62af72a1c6cb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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