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CVE-2026-23193 is a use-after-free vulnerability in the Linux kernel SCSI iSCSI target subsystem. The iscsit_dec_session_usage_count() function calls complete() while holding sess->session_usage_lock. A waiting thread, such as one handling session release, can wake and immediately free the iscsit_session structure before the original thread calls spin_unlock_bh(). The resulting access to the freed session structure can produce a KASAN slab-use-after-free and cause a kernel crash. The fix releases the session lock before signaling completion, ensuring that session dereferences finish before deallocation can proceed.
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A race condition in the Linux kernel's iSCSI target session handling can cause a use-after-free when a session is deallocated before its usage lock is released. The fix releases the lock before signaling completion. The reference assigns a CVSS v3 base score of 7.8, with local access and low privileges required.
A use-after-free race condition in the Linux kernel's iSCSI target session handling. Calling complete() while holding session_usage_lock can wake a waiter that frees the session structure before the current thread executes spin_unlock_bh(), causing access to freed memory. The fix releases the lock before calling complete(). The reference assigns a CVSS v3 base score of 7.8, with local access and low privileges required, and recommends updating the affected Google kernel packages to version 19506.0.32 or later.
A race condition in the Linux kernel's iSCSI target subsystem causes a use-after-free when a session-release waiter deallocates the session before the current thread releases its lock. The fix releases session_usage_lock before calling complete(), ensuring session-pointer accesses finish before deallocation. The reference assigns a CVSS v3 base score of 7.8, with local access and low privileges required.
Vulnerability referenced by the advisory; no individual technical description is provided.
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