DEBIAN-CVE-2026-23001

Advisory lineage Upstream: 1 Downstream: 4
Upstream
CVE-2026-23001
Published: 25 Jan 2026, 15:15
Last modified:28 Apr 2026, 20:31

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Jan 2026, 15:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:31
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlan_forward_source() Add RCU protection on (struct macvlan_source_entry)->vlan. Whenever macvlan_hash_del_source() is called, we must clear entry->vlan pointer before RCU grace period starts. This allows macvlan_forward_source() to skip over entries queued for freeing. Note that macvlan_dev are already RCU protected, as they are embedded in a standard netdev (netdev_priv(ndev)). https: //lore.kernel.org/netdev/695fb1e8.050a0220.1c677c.039f.GAE@google.com/T/#u

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•linux

    all | all | all | all | < 5.10.249-1 | < 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1

  • debian•linux-6.1

    all | < 6.1.162-1~deb11u1

References (1)