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CVE-2024-26845scsi: target: core: Add TMF to tmr_list handling

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.

Timeline

  1. ID reserved

    By Linux

  2. · 58 days later

    Published

  3. · 2 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-26845, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.74% · top 45% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Affected products

  • Linux · Linux

    • affected 2281c95fe751325874d135b237ecdcd3bc34cc26 – < 11f3fe5001ed05721e641f0ecaa7a73b7deb245d
    • affected 2281c95fe751325874d135b237ecdcd3bc34cc26 – < 168ed59170de1fd7274080fe102216162d6826cf
    • affected 2281c95fe751325874d135b237ecdcd3bc34cc26 – < a9849b67b4402a12eb35eadc9306c1ef9847d53d
    • affected 2281c95fe751325874d135b237ecdcd3bc34cc26 – < e717bd412001495f17400bfc09f606f1b594ef5a
    • affected 2281c95fe751325874d135b237ecdcd3bc34cc26 – < 36bc5040c863b44af06094b22f1e50059227b9cb
    • affected 2281c95fe751325874d135b237ecdcd3bc34cc26 – < bd508f96b5fef96d8a0ce9cbb211d82bcfc2341f
    • affected 2281c95fe751325874d135b237ecdcd3bc34cc26 – < 83ab68168a3d990d5ff39ab030ad5754cbbccb25

  • Linux · Linux

    • affected 5.1
    • unaffected < 5.1
    • unaffected 5.4.270 – ≤ 5.4.*
    • unaffected 5.10.211 – ≤ 5.10.*
    • unaffected 5.15.150 – ≤ 5.15.*
    • unaffected 6.1.80 – ≤ 6.1.*
    • unaffected 6.6.19 – ≤ 6.6.*
    • unaffected 6.7.7 – ≤ 6.7.*
    • unaffected 6.8 – ≤ *

References

References10

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .