vrf: use RCU protection in l3mdev_l3_out()
In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdev_l3_out() l3mdev_l3_out() can be called without RCU being held: raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out() Add rcu_read_lock() / rcu_read_unlock() pair to avoid a potential UAF.
CVE-2025-21791
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-2025-21791
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": "a8e3e1a9f02094145580ea7920c6a1d9aabd5539",
"lessThan": "6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e",
"versionType": "git"
},
{
"status": "affected",
"version": "a8e3e1a9f02094145580ea7920c6a1d9aabd5539",
"lessThan": "20a3489b396764cc9376e32a9172bee26a89dc3b",
"versionType": "git"
},
{
"status": "affected",
"version": "a8e3e1a9f02094145580ea7920c6a1d9aabd5539",
"lessThan": "5bb4228c32261d06e4fbece37ec3828bcc005b6b",
"versionType": "git"
},
{
"status": "affected",
"version": "a8e3e1a9f02094145580ea7920c6a1d9aabd5539",
"lessThan": "c7574740be8ce68a57d0aece24987b9be2114c3c",
"versionType": "git"
},
{
"status": "affected",
"version": "a8e3e1a9f02094145580ea7920c6a1d9aabd5539",
"lessThan": "c40cb5c03e37552d6eff963187109e2c3f78ef6f",
"versionType": "git"
},
{
"status": "affected",
"version": "a8e3e1a9f02094145580ea7920c6a1d9aabd5539",
"lessThan": "022cac1c693add610ae76ede03adf4d9d5a2cf21",
"versionType": "git"
},
{
"status": "affected",
"version": "a8e3e1a9f02094145580ea7920c6a1d9aabd5539",
"lessThan": "7b81425b517accefd46bee854d94954f5c57e019",
"versionType": "git"
},
{
"status": "affected",
"version": "a8e3e1a9f02094145580ea7920c6a1d9aabd5539",
"lessThan": "6d0ce46a93135d96b7fa075a94a88fe0da8e8773",
"versionType": "git"
}
],
"programFiles": [
"include/net/l3mdev.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.9",
"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": [
"include/net/l3mdev.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21791
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26946 · Revision 1
- Added to Heist Feed
- Publisher date