CVE-2024-26845

scsi: target: core: Add TMF to tmr_list handling

MEDIUM

5.5

CVSS Score

Published: April 17, 2024 at 10:10 AM UTC

Updated: August 5, 2026 at 12:04 PM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

10.0

Linux Kernel · Linux

95%

v < 4.19.3084.20 ≤ v < 5.4.2705.1 ≤ v < 5.10.2115.1 ≤ v < 5.15.1505.1 ≤ v < 5.4.2705.1 ≤ v < 6.1.805.1 ≤ v < 6.6.195.1 ≤ v < 6.7.75.1 ≤ v < 6.85.11 ≤ v < 5.15.1505.16 ≤ v < 6.1.805.5 ≤ v < 5.10.2116.2 ≤ v < 6.6.196.7 ≤ v < 6.7.72281c95fe751325874d135b237ecdcd3bc34cc265.1

Vendor states this is fixed in 11f3fe5001ed05721e641f0ecaa7a73b7deb245d (fixed)

Vendor states this is fixed in 168ed59170de1fd7274080fe102216162d6826cf (fixed)

Vendor states this is fixed in 36bc5040c863b44af06094b22f1e50059227b9cb (fixed)

Vendor states this is fixed in 83ab68168a3d990d5ff39ab030ad5754cbbccb25 (fixed)

Vendor states this is fixed in a9849b67b4402a12eb35eadc9306c1ef9847d53d (fixed)

Vendor states this is fixed in bd508f96b5fef96d8a0ce9cbb211d82bcfc2341f (fixed)

Vendor states this is fixed in e717bd412001495f17400bfc09f606f1b594ef5a (fixed)

Affected range stops below 4.19.308, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 5.1 (unaffected)

Vendor states this is fixed in 5.10.211 (unaffected)

Vendor states this is fixed in 5.15.150 (unaffected)

Vendor states this is fixed in 5.4.270 (unaffected)