Critical · published June 18, 2025
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix timeout on deleted connection
NOPIN response timer may expire on a deleted connection and crash with
such logs:
Did not receive response to NOPIN on CID: 0, failing connection for I_T Nexus (null),i,0x00023d000125,iqn.2017-01.com.iscsi.target,t,0x3d
BUG: Kernel NULL pointer dereference on read at 0x00000000
NIP strlcpy+0x8/0xb0
LR iscsit_fill_cxn_timeout_err_stats+0x5c/0xc0 [iscsi_target_mod]
Call Trace:
iscsit_handle_nopin_response_timeout+0xfc/0x120 [iscsi_target_mod]
call_timer_fn+0x58/0x1f0
run_timer_softirq+0x740/0x860
__do_softirq+0x16c/0x420
irq_exit+0x188/0x1c0
timer_interrupt+0x184/0x410
That is because nopin response timer may be re-started on nopin timer
expiration.
Stop nopin timer before stopping the nopin response timer to be sure
that no one of them will be re-started.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 3.1, < 5.4.294 | 5.4.294 |
| linux/linux_kernel | ≥ 5.5, < 5.10.238 | 5.10.238 |
| linux/linux_kernel | ≥ 5.11, < 5.15.185 | 5.15.185 |
| linux/linux_kernel | ≥ 5.16, < 6.1.141 | 6.1.141 |
| linux/linux_kernel | ≥ 6.2, < 6.6.93 | 6.6.93 |
| linux/linux_kernel | ≥ 6.7, < 6.12.31 | 6.12.31 |
| linux/linux_kernel | ≥ 6.13, < 6.14.9 | 6.14.9 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| debian/debian_linux | all versions | — |