FKIE_CVE-2024-42283

Vulnerability from fkie_nvd - Published: 2024-08-17 09:15 - Updated: 2025-11-03 22:17
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1377de719652d868f5317ba8398b7e74c5f0430bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5cc4d71dda2dd4f1520f40e634a527022e48ccd8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d745cd0e9720282cd291d36b9db528aea18add2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7704460acd7f5d35eb07c52500987dc9b95313fbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a13d3864b76ac87085ec530b2ff8e37482a63a96Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd06cb4a5fc7bda3dea31712618a62af72a1c6cbPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: nexthop: Initialize all fields in dumped nexthops\n\nstruct nexthop_grp contains two reserved fields that are not initialized by\nnla_put_nh_group(), and carry garbage. This can be observed e.g. with\nstrace (edited for clarity):\n\n    # ip nexthop add id 1 dev lo\n    # ip nexthop add id 101 group 1\n    # strace -e recvmsg ip nexthop get id 101\n    ...\n    recvmsg(... [{nla_len=12, nla_type=NHA_GROUP},\n                 [{id=1, weight=0, resvd1=0x69, resvd2=0x67}]] ...) = 52\n\nThe fields are reserved and therefore not currently used. But as they are, they\nleak kernel memory, and the fact they are not just zero complicates repurposing\nof the fields for new ends. Initialize the full structure."
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: nexthop: inicializa todos los campos en la estructura nexthops volcada. nexthop_grp contiene dos campos reservados que no son inicializados por nla_put_nh_group() y transporta basura. Esto se puede observar, por ejemplo, con strace (editado para mayor claridad): # 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, peso=0, resvd1=0x69, resvd2=0x67}]] ...) = 52 Los campos est\u00e1n reservados y, por lo tanto, no se utilizan actualmente. Pero tal como est\u00e1n, pierden memoria del n\u00facleo, y el hecho de que no sean simplemente cero complica la reutilizaci\u00f3n de los campos para nuevos fines. Inicialice la estructura completa."
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  "id": "CVE-2024-42283",
  "lastModified": "2025-11-03T22:17:54.660",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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