High
ndisc: use RCU protection in ndisc_alloc_skb()
In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF.
Announced Group revision 1
Original source ↗CVE-2025-21764
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-2025-21764
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": "de09334b9326632bbf1a74bfd8b01866cbbf2f61",
"lessThan": "96fc896d0e5b37c12808df797397fb16f3080879",
"versionType": "git"
},
{
"status": "affected",
"version": "de09334b9326632bbf1a74bfd8b01866cbbf2f61",
"lessThan": "c30893ef3d9cde8e7e8e4fd06b53d2c935bbccb1",
"versionType": "git"
},
{
"status": "affected",
"version": "de09334b9326632bbf1a74bfd8b01866cbbf2f61",
"lessThan": "b870256dd2a5648d5ed2f22316b3ac29a7e5ed63",
"versionType": "git"
},
{
"status": "affected",
"version": "de09334b9326632bbf1a74bfd8b01866cbbf2f61",
"lessThan": "3c2d705f5adf5d860aaef90cb4211c0fde2ba66d",
"versionType": "git"
},
{
"status": "affected",
"version": "de09334b9326632bbf1a74bfd8b01866cbbf2f61",
"lessThan": "9e0ec817eb41a55327a46cd3ce331a9868d60304",
"versionType": "git"
},
{
"status": "affected",
"version": "de09334b9326632bbf1a74bfd8b01866cbbf2f61",
"lessThan": "bbec88e4108e8d6fb468d3817fa652140a44ff28",
"versionType": "git"
},
{
"status": "affected",
"version": "de09334b9326632bbf1a74bfd8b01866cbbf2f61",
"lessThan": "cd1065f92eb7ff21b9ba5308a86f33d1670bf926",
"versionType": "git"
},
{
"status": "affected",
"version": "de09334b9326632bbf1a74bfd8b01866cbbf2f61",
"lessThan": "628e6d18930bbd21f2d4562228afe27694f66da9",
"versionType": "git"
}
],
"programFiles": [
"net/ipv6/ndisc.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.291",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.235",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.179",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.129",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.79",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.16",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13.4",
"versionType": "semver",
"lessThanOrEqual": "6.13.*"
},
{
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv6/ndisc.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21764
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26938 · Revision 1
- Added to Heist Feed
- Publisher date