CVE-2026-23001
macvlan: fix possible UAF in macvlan_forward_source()
HIGH 7.8EPSS 0.2%
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
- Affected
- Linux
- CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.21% chance of exploitation in the next 30 days, 10th percentile
- Published
- 2026-01-25
- Updated
- 2026-08-05
Proof-of-concept exploits (1)
- George0Papasotiriou/CVE-2026-23001-Hugging-Face-Transformers-Model-Deserialization-Arbitr…0★ · 2026-08-05
Security advisories
- https://git.kernel.org/stable/c/15f6faf36e162532bec5cc05eb3fc622108bf2ed
- https://git.kernel.org/stable/c/232afc74a6dde0fe1830988e5827921f5ec9bb3f
- https://git.kernel.org/stable/c/484919832e2db6ce1e8add92c469e5d459a516b5
- https://git.kernel.org/stable/c/6dbead9c7677186f22b7981dd085a0feec1f038e
- https://git.kernel.org/stable/c/7470a7a63dc162f07c26dbf960e41ee1e248d80e
- https://git.kernel.org/stable/c/8133e85b8a3ec9f10d861e0002ec6037256e987e
- https://git.kernel.org/stable/c/8518712a2ca952d6da2238c6f0a16b4ae5ea3f13