CVE-2026-23193 - scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()

CVE-2026-23193 - scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()

https://cvefeed.io/rssfeed/latest.atom / Sat, 02/14/2026 - 20:02
CVE ID : CVE-2026-23193
Published : Feb. 14, 2026, 5:15 p.m. | 1 hour, 5 minutes ago
Description : 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.
Severity: 0.0 | NA
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