CVE-2024-42283 (GCVE-0-2024-42283)

Vulnerability from cvelistv5 – Published: 2024-08-17 09:08 – Updated: 2025-11-03 22:03
VLAI?
Title
net: nexthop: Initialize all fields in dumped nexthops
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 430a049190de3c9e219f43084de9f1122da04570 , < fd06cb4a5fc7bda3dea31712618a62af72a1c6cb (git)
Affected: 430a049190de3c9e219f43084de9f1122da04570 , < 5cc4d71dda2dd4f1520f40e634a527022e48ccd8 (git)
Affected: 430a049190de3c9e219f43084de9f1122da04570 , < 9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0 (git)
Affected: 430a049190de3c9e219f43084de9f1122da04570 , < 1377de719652d868f5317ba8398b7e74c5f0430b (git)
Affected: 430a049190de3c9e219f43084de9f1122da04570 , < 7704460acd7f5d35eb07c52500987dc9b95313fb (git)
Affected: 430a049190de3c9e219f43084de9f1122da04570 , < a13d3864b76ac87085ec530b2ff8e37482a63a96 (git)
Affected: 430a049190de3c9e219f43084de9f1122da04570 , < 6d745cd0e9720282cd291d36b9db528aea18add2 (git)
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    Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.4.282 , ≤ 5.4.* (semver)
Unaffected: 5.10.224 , ≤ 5.10.* (semver)
Unaffected: 5.15.165 , ≤ 5.15.* (semver)
Unaffected: 6.1.103 , ≤ 6.1.* (semver)
Unaffected: 6.6.44 , ≤ 6.6.* (semver)
Unaffected: 6.10.3 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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