ipv6: do not warn on route notification size race
In the Linux kernel, the following vulnerability has been resolved: ipv6: do not warn on route notification size race fib6_info_hw_flags_set() sizes the skb with rt6_nlmsg_size() and later fills it with rt6_fill_node(). With nexthop compatibility mode enabled, a concurrent replacement can grow the group between these independent snapshots. rt6_fill_node() can then legitimately return -EMSGSIZE, so the warning does not prove a sizing bug. Remove the warning. The existing error path still frees the skb and reports the error to listeners.
CVE-2026-99070
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-2026-99070
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": "907eea486888cfe118c19759bbc4b8fca2e004df",
"lessThan": "8a3b935b6b6037eefb36bd27a60793a008358e8d",
"versionType": "git"
},
{
"status": "affected",
"version": "907eea486888cfe118c19759bbc4b8fca2e004df",
"lessThan": "7b112bd43f1172fb152e848570a957467008a5ae",
"versionType": "git"
},
{
"status": "affected",
"version": "907eea486888cfe118c19759bbc4b8fca2e004df",
"lessThan": "4ac7d92a4698e34e614c254359665b9de1f65283",
"versionType": "git"
},
{
"status": "affected",
"version": "907eea486888cfe118c19759bbc4b8fca2e004df",
"lessThan": "291fe0bafee78c95f9f2e7f579f17793fd5a1e5a",
"versionType": "git"
},
{
"status": "affected",
"version": "907eea486888cfe118c19759bbc4b8fca2e004df",
"lessThan": "c97426ec649d99596d8969e1a052c16b14b7b485",
"versionType": "git"
}
],
"programFiles": [
"net/ipv6/route.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.11",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv6/route.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-99070
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #52894 · Revision 1
- Added to Heist Feed
- Publisher date