High
ndisc: extend RCU protection in ndisc_send_skb()
In the Linux kernel, the following vulnerability has been resolved: ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF.
Announced Source revision 1
Original source ↗CVE-2025-21760
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-2025-21760
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": "1762f7e88eb34f653b4a915be99a102e347dd45e",
"lessThan": "10a1f3fece2f0d23a3a618b72b2b4e6f408ef7d1",
"versionType": "git"
},
{
"status": "affected",
"version": "1762f7e88eb34f653b4a915be99a102e347dd45e",
"lessThan": "4d576202b90b1b95a7c428a80b536f91b8201bcc",
"versionType": "git"
},
{
"status": "affected",
"version": "1762f7e88eb34f653b4a915be99a102e347dd45e",
"lessThan": "e24d225e4cb8cf108bde00b76594499b98f0a74d",
"versionType": "git"
},
{
"status": "affected",
"version": "1762f7e88eb34f653b4a915be99a102e347dd45e",
"lessThan": "a9319d800b5701e7f5e3fa71a5b7c4831fc20d6d",
"versionType": "git"
},
{
"status": "affected",
"version": "1762f7e88eb34f653b4a915be99a102e347dd45e",
"lessThan": "ae38982f521621c216fc2f5182cd091f4734641d",
"versionType": "git"
},
{
"status": "affected",
"version": "1762f7e88eb34f653b4a915be99a102e347dd45e",
"lessThan": "789230e5a8c1097301afc802e242c79bc8835c67",
"versionType": "git"
},
{
"status": "affected",
"version": "1762f7e88eb34f653b4a915be99a102e347dd45e",
"lessThan": "04e05112f10354ffc3bb6cc796d553bab161594c",
"versionType": "git"
},
{
"status": "affected",
"version": "1762f7e88eb34f653b4a915be99a102e347dd45e",
"lessThan": "ed6ae1f325d3c43966ec1b62ac1459e2b8e45640",
"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": "2.6.26"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.26",
"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-2025-21760
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26934 · Revision 1
- Added to Heist Feed
- Publisher date