In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsitdecsessionusagecount()
In iscsitdecsessionusagecount(), the function calls complete() while holding the sess->sessionusagelock. 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 spinunlockbh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free.
To resolve this, release the sessionusagelock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to proceed with deallocation.
{
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23193.json"
}