net: nexthop: Initialize all fields in dumped nexthops
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.
CVE-2024-42283
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-42283
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "430a049190de3c9e219f43084de9f1122da04570",
"lessThan": "fd06cb4a5fc7bda3dea31712618a62af72a1c6cb",
"versionType": "git"
},
{
"status": "affected",
"version": "430a049190de3c9e219f43084de9f1122da04570",
"lessThan": "5cc4d71dda2dd4f1520f40e634a527022e48ccd8",
"versionType": "git"
},
{
"status": "affected",
"version": "430a049190de3c9e219f43084de9f1122da04570",
"lessThan": "9e8f558a3afe99ce51a642ce0d3637ddc2b5d5d0",
"versionType": "git"
},
{
"status": "affected",
"version": "430a049190de3c9e219f43084de9f1122da04570",
"lessThan": "1377de719652d868f5317ba8398b7e74c5f0430b",
"versionType": "git"
},
{
"status": "affected",
"version": "430a049190de3c9e219f43084de9f1122da04570",
"lessThan": "7704460acd7f5d35eb07c52500987dc9b95313fb",
"versionType": "git"
},
{
"status": "affected",
"version": "430a049190de3c9e219f43084de9f1122da04570",
"lessThan": "a13d3864b76ac87085ec530b2ff8e37482a63a96",
"versionType": "git"
},
{
"status": "affected",
"version": "430a049190de3c9e219f43084de9f1122da04570",
"lessThan": "6d745cd0e9720282cd291d36b9db528aea18add2",
"versionType": "git"
}
],
"programFiles": [
"net/ipv4/nexthop.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.282",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.224",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.165",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.103",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.44",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.10.3",
"versionType": "semver",
"lessThanOrEqual": "6.10.*"
},
{
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv4/nexthop.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-42283
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26679 · Revision 1
- Added to Heist Feed
- Publisher date