CVE-2023-52974: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress If during iscsi_sw_tcp_session_create() iscsi_tcp_r2tpool_alloc() fails, userspace could be accessing the host's ipaddress attr. If we then free the session via iscsi_session_teardown() while userspace is still accessing the session we will hit a use after free bug. Set the tcp_sw_host->session after we have completed session creation and can no longer fail.

Affected products

• Linux Linux Kernel: before 4.14.306 (fixed in 4.14.306); from 4.15, before 4.19.273 (fixed in 4.19.273); from 4.20, before 5.4.232 (fixed in 5.4.232); from 5.5, before 5.10.168 (fixed in 5.10.168); from 5.11, before 5.15.93 (fixed in 5.15.93); from 5.16, before 6.1.11 (fixed in 6.1.11); …

Published 2025-03-27. Last modified 2026-06-17.