CVE-2024-42283

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.

• CWE-908

• https://git.kernel.org/stable/c/1377de719652d868f5317ba8398b7e74c5f0430bPatch
• https://git.kernel.org/stable/c/5cc4d71dda2dd4f1520f40e634a527022e48ccd8Patch
• https://git.kernel.org/stable/c/6d745cd0e9720282cd291d36b9db528aea18add2Patch
• https://git.kernel.org/stable/c/7704460acd7f5d35eb07c52500987dc9b95313fbPatch
• https://git.kernel.org/stable/c/9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0Patch
• https://git.kernel.org/stable/c/a13d3864b76ac87085ec530b2ff8e37482a63a96Patch
• https://git.kernel.org/stable/c/fd06cb4a5fc7bda3dea31712618a62af72a1c6cbPatch
• 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

Published

Aug 17, 2024

Last Modified

Jun 17, 2026

Status

Modified

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