CVE-2026-23001

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-23001
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23001.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23001
Downstream
Related
Published
2026-01-25T14:36:15.790Z
Modified
2026-05-15T11:53:39.696309306Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
macvlan: fix possible UAF in macvlan_forward_source()
Details

In the Linux kernel, the following vulnerability has been resolved:

macvlan: fix possible UAF in macvlanforwardsource()

Add RCU protection on (struct macvlansourceentry)->vlan.

Whenever macvlanhashdel_source() is called, we must clear entry->vlan pointer before RCU grace period starts.

This allows macvlanforwardsource() to skip over entries queued for freeing.

Note that macvlandev are already RCU protected, as they are embedded in a standard netdev (netdevpriv(ndev)).

https: //lore.kernel.org/netdev/695fb1e8.050a0220.1c677c.039f.GAE@google.com/T/#u

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23001.json"
}
References

Affected packages

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.18.0
Fixed
5.10.249
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.199
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.162
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.122
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.67
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.7

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23001.json"