{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-26845", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.182Z", "datePublished": "2024-04-17T10:10:09.337Z", "dateUpdated": "2026-08-05T11:27:45.996Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:27:45.996Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: core: Add TMF to tmr_list handling\n\nAn abort that is responded to by iSCSI itself is added to tmr_list but does\nnot go to target core. A LUN_RESET that goes through tmr_list takes a\nrefcounter on the abort and waits for completion. However, the abort will\nbe never complete because it was not started in target core.\n\n Unable to locate ITT: 0x05000000 on CID: 0\n Unable to locate RefTaskTag: 0x05000000 on CID: 0.\n 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\n 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\n...\n INFO: task kworker/0:2:49 blocked for more than 491 seconds.\n task:kworker/0:2 state:D stack: 0 pid: 49 ppid: 2 flags:0x00000800\n Workqueue: events target_tmr_work [target_core_mod]\nCall Trace:\n __switch_to+0x2c4/0x470\n _schedule+0x314/0x1730\n schedule+0x64/0x130\n schedule_timeout+0x168/0x430\n wait_for_completion+0x140/0x270\n target_put_cmd_and_wait+0x64/0xb0 [target_core_mod]\n core_tmr_lun_reset+0x30/0xa0 [target_core_mod]\n target_tmr_work+0xc8/0x1b0 [target_core_mod]\n process_one_work+0x2d4/0x5d0\n worker_thread+0x78/0x6c0\n\nTo fix this, only add abort to tmr_list if it will be handled by target\ncore." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - The vulnerable code is reached by iSCSI Task Management Function PDUs processed by the in-kernel LIO iSCSI target listening on TCP/3260, so a remote peer anywhere on the routable network can drive it. The same path is exported to other network fabrics (isert/RDMA, cxgbit).\nAC:L - The attacker fully controls both halves: an ABORT_TASK with a bogus RefTaskTag and out-of-window RefCmdSN parks a stale entry on dev_tmr_list, and an immediate-flagged LUN_RESET (which bypasses CmdSN sequencing) then walks that list. Using an out-of-order CmdSN keeps the stale entry alive indefinitely, so no race window has to be won.\nPR:N - Only an iSCSI session in full-feature phase is needed, and iSCSI login is unauthenticated in the standard SAN deployment (CHAP disabled, or generate_node_acls=1 demo mode) where the only \"credential\" is a plaintext IQN string that is discoverable via SendTargets and trivially spoofed.\nUI:N - The attacker sends two TMF PDUs on their own connection; no action by any administrator, initiator host, or local user is required.\nS:U - The deadlock is confined to the kernel's own target-core subsystem and its worker threads, with no crossing into a different security authority such as a hypervisor or IOMMU boundary.\nC:N - The defect is an unbalanced completion wait on a TMR that never entered target core; no memory is read out of bounds and no kernel data is disclosed to the initiator.\nI:N - Nothing is written out of bounds and no freed object is reused — the reference count is held too long rather than dropped too early, so there is no corruption or control-flow primitive.\nA:H - The target_tmr_work kworker blocks forever in target_put_cmd_and_wait() and the iSCSI thread loops indefinitely in __transport_wait_for_tasks(), leaving unkillable D-state threads, a permanently pinned lun_ref that prevents LUN/device teardown, and a wedged storage target that only a reboot recovers; the hung-task detector can also panic the box." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/target/target_core_device.c", "drivers/target/target_core_transport.c" ], "versions": [ { "version": "2281c95fe751325874d135b237ecdcd3bc34cc26", "lessThan": "11f3fe5001ed05721e641f0ecaa7a73b7deb245d", "status": "affected", "versionType": "git" }, { "version": "2281c95fe751325874d135b237ecdcd3bc34cc26", "lessThan": "168ed59170de1fd7274080fe102216162d6826cf", "status": "affected", "versionType": "git" }, { "version": "2281c95fe751325874d135b237ecdcd3bc34cc26", "lessThan": "a9849b67b4402a12eb35eadc9306c1ef9847d53d", "status": "affected", "versionType": "git" }, { "version": "2281c95fe751325874d135b237ecdcd3bc34cc26", "lessThan": "e717bd412001495f17400bfc09f606f1b594ef5a", "status": "affected", "versionType": "git" }, { "version": "2281c95fe751325874d135b237ecdcd3bc34cc26", "lessThan": "36bc5040c863b44af06094b22f1e50059227b9cb", "status": "affected", "versionType": "git" }, { "version": "2281c95fe751325874d135b237ecdcd3bc34cc26", "lessThan": "bd508f96b5fef96d8a0ce9cbb211d82bcfc2341f", "status": "affected", "versionType": "git" }, { "version": "2281c95fe751325874d135b237ecdcd3bc34cc26", "lessThan": "83ab68168a3d990d5ff39ab030ad5754cbbccb25", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/target/target_core_device.c", "drivers/target/target_core_transport.c" ], "versions": [ { "version": "5.1", "status": "affected" }, { "version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.270", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.211", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.150", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.80", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.4.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.10.211" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.15.150" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.1.80" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.6.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.7.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/11f3fe5001ed05721e641f0ecaa7a73b7deb245d" }, { "url": "https://git.kernel.org/stable/c/168ed59170de1fd7274080fe102216162d6826cf" }, { "url": "https://git.kernel.org/stable/c/a9849b67b4402a12eb35eadc9306c1ef9847d53d" }, { "url": "https://git.kernel.org/stable/c/e717bd412001495f17400bfc09f606f1b594ef5a" }, { "url": "https://git.kernel.org/stable/c/36bc5040c863b44af06094b22f1e50059227b9cb" }, { "url": "https://git.kernel.org/stable/c/bd508f96b5fef96d8a0ce9cbb211d82bcfc2341f" }, { "url": "https://git.kernel.org/stable/c/83ab68168a3d990d5ff39ab030ad5754cbbccb25" } ], "title": "scsi: target: core: Add TMF to tmr_list handling", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-26845", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-28T19:57:59.068880Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:48:22.368Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:13.663Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/425a571a7e6fc389954cf2564e1edbba3740e171", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/11f3fe5001ed05721e641f0ecaa7a73b7deb245d", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/168ed59170de1fd7274080fe102216162d6826cf", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/a9849b67b4402a12eb35eadc9306c1ef9847d53d", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e717bd412001495f17400bfc09f606f1b594ef5a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/36bc5040c863b44af06094b22f1e50059227b9cb", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/bd508f96b5fef96d8a0ce9cbb211d82bcfc2341f", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/83ab68168a3d990d5ff39ab030ad5754cbbccb25", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "tags": [ "x_transferred" ] } ] } ] }, "dataVersion": "5.2" }