High
arp: use RCU protection in arp_xmit()
In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arp_xmit() arp_xmit() can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF.
Announced Source revision 1
Original source ↗CVE-2025-21762
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-2025-21762
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": "29a26a56803855a79dbd028cd61abee56237d6e5",
"lessThan": "10f555e3f573d004ae9d89b3276abb58c4ede5c3",
"versionType": "git"
},
{
"status": "affected",
"version": "29a26a56803855a79dbd028cd61abee56237d6e5",
"lessThan": "307cd1e2d3cb1cbc6c40c679cada6d7168b18431",
"versionType": "git"
},
{
"status": "affected",
"version": "29a26a56803855a79dbd028cd61abee56237d6e5",
"lessThan": "d9366ac2f956a1948b68c0500f84a3462ff2ed8a",
"versionType": "git"
},
{
"status": "affected",
"version": "29a26a56803855a79dbd028cd61abee56237d6e5",
"lessThan": "f189654459423d4d48bef2d120b4bfba559e6039",
"versionType": "git"
},
{
"status": "affected",
"version": "29a26a56803855a79dbd028cd61abee56237d6e5",
"lessThan": "e9f4dee534eb1b225b0a120395ad9bc2afe164d3",
"versionType": "git"
},
{
"status": "affected",
"version": "29a26a56803855a79dbd028cd61abee56237d6e5",
"lessThan": "01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe",
"versionType": "git"
},
{
"status": "affected",
"version": "29a26a56803855a79dbd028cd61abee56237d6e5",
"lessThan": "2c331718d3389b6c5f6855078ab7171849e016bd",
"versionType": "git"
},
{
"status": "affected",
"version": "29a26a56803855a79dbd028cd61abee56237d6e5",
"lessThan": "a42b69f692165ec39db42d595f4f65a4c8f42e44",
"versionType": "git"
}
],
"programFiles": [
"net/ipv4/arp.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.4",
"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/ipv4/arp.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21762
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26936 · Revision 1
- Added to Heist Feed
- Publisher date