CVE-2026-23001 - macvlan: fix possible UAF in macvlan_forward_source()

CVE-2026-23001 - macvlan: fix possible UAF in macvlan_forward_source()

https://cvefeed.io/rssfeed/latest.atom / Sun, 01/25/2026 - 16:59
CVE ID : CVE-2026-23001
Published : Jan. 25, 2026, 3:15 p.m. | 29 minutes ago
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
Severity: 0.0 | NA
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