High · published February 18, 2026
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()
In iscsit_dec_conn_usage_count(), the function calls complete() while
holding the conn->conn_usage_lock. As soon as complete() is invoked, the
waiter (such as iscsit_close_connection()) may wake up and proceed to free
the iscsit_conn structure.
If the waiter frees the memory before the current thread reaches
spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function
attempts to release a lock within the already-freed connection structure.
Fix this by releasing the spinlock before calling complete().
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 3.1, < 5.10.250 | 5.10.250 |
| linux/linux_kernel | ≥ 5.11, < 5.15.200 | 5.15.200 |
| linux/linux_kernel | ≥ 5.16, < 6.1.163 | 6.1.163 |
| linux/linux_kernel | ≥ 6.2, < 6.6.124 | 6.6.124 |
| linux/linux_kernel | ≥ 6.7, < 6.12.70 | 6.12.70 |
| linux/linux_kernel | ≥ 6.13, < 6.18.10 | 6.18.10 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |