CVE-2023-51780: Debian Linux

High severity, CVSS 7.0. EPSS: 0.5% chance of exploitation in the next 30 days.

An issue was discovered in the Linux kernel before 6.6.8. do_vcc_ioctl in net/atm/ioctl.c has a use-after-free because of a vcc_recvmsg race condition.

Affected products

• Debian Debian Linux: version 10.0 only
• Linux Linux Kernel: after 2.6.12, before 6.6.8 (fixed in 6.6.8); version 2.6.12 only; version 6.7 only

Published 2024-01-11. Last modified 2026-06-17.