CVE-2026-23193

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Similar to the connection usage count logic, the waiter signaled by complete() (e.g., in the session release path) may wake up and free the iscsit_session structure immediately. This creates a race condition where the current thread may attempt to execute spin_unlock_bh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free. To resolve this, release the session_usage_lock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to proceed with deallocation.

• linux linux kernel (>= 3.1 < 5.10.250) • linux linux kernel (>= 5.11 < 5.15.200) • linux linux kernel (>= 5.16 < 6.1.163) • linux linux kernel (>= 6.2 < 6.6.124) • linux linux kernel (>= 6.7 < 6.12.70) • linux linux kernel (>= 6.13 < 6.18.10) • linux linux kernel 6.19