CVE-2024-26845
Assigner: Linux
Published: 2024-04-17T10:10:09.337Z
State: PUBLISHED
descriptions: value: In the Linux kernel, the following vulnerability has been resolved:

scsi: target: core: Add TMF to tmr_list handling

An abort that is responded to by iSCSI itself is added to tmr_list but does
not go to target core. A LUN_RESET that goes through tmr_list takes a
refcounter on the abort and waits for completion. However, the abort will
be never complete because it was not started in target core.

 Unable to locate ITT: 0x05000000 on CID: 0
 Unable to locate RefTaskTag: 0x05000000 on CID: 0.
 wait_for_tasks: Stopping tmf LUN_RESET with tag 0x0 ref_task_tag 0x0 i_state 34 t_state ISTATE_PROCESSING refcnt 2 transport_state active,stop,fabric_stop
 wait for tasks: tmf LUN_RESET with tag 0x0 ref_task_tag 0x0 i_state 34 t_state ISTATE_PROCESSING refcnt 2 transport_state active,stop,fabric_stop
...
 INFO: task kworker/0:2:49 blocked for more than 491 seconds.
 task:kworker/0:2     state:D stack:    0 pid:   49 ppid:     2 flags:0x00000800
 Workqueue: events target_tmr_work [target_core_mod]
Call Trace:
 __switch_to+0x2c4/0x470
 _schedule+0x314/0x1730
 schedule+0x64/0x130
 schedule_timeout+0x168/0x430
 wait_for_completion+0x140/0x270
 target_put_cmd_and_wait+0x64/0xb0 [target_core_mod]
 core_tmr_lun_reset+0x30/0xa0 [target_core_mod]
 target_tmr_work+0xc8/0x1b0 [target_core_mod]
 process_one_work+0x2d4/0x5d0
 worker_thread+0x78/0x6c0

To fix this, only add abort to tmr_list if it will be handled by target
core.
affected: product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 1da177e4c3f4
lessThan: 425a571a7e6f
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: 11f3fe5001ed
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: 168ed59170de
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: a9849b67b440
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: e717bd412001
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: 36bc5040c863
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: bd508f96b5fe
status: affected
versionType: git
version: 1da177e4c3f4
lessThan: 83ab68168a3d
status: affected
versionType: git
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 4.19.308
lessThanOrEqual: 4.19.*
status: unaffected
versionType: custom
version: 5.4.270
lessThanOrEqual: 5.4.*
status: unaffected
versionType: custom
version: 5.10.211
lessThanOrEqual: 5.10.*
status: unaffected
versionType: custom
version: 5.15.150
lessThanOrEqual: 5.15.*
status: unaffected
versionType: custom
version: 6.1.80
lessThanOrEqual: 6.1.*
status: unaffected
versionType: custom
version: 6.6.19
lessThanOrEqual: 6.6.*
status: unaffected
versionType: custom
version: 6.7.7
lessThanOrEqual: 6.7.*
status: unaffected
versionType: custom
version: 6.8
lessThanOrEqual: *
status: unaffected
versionType: original_commit_for_fix
title: scsi: target: core: Add TMF to tmr_list handling
x_generator: engine: bippy-d175d3acf727