Vulnerability-Lookup

GSD-2024-26758

Vulnerability from gsd - Updated: 2024-02-20 06:02

Details

In the Linux kernel, the following vulnerability has been resolved: md: Don't ignore suspended array in md_check_recovery() mddev_suspend() never stop sync_thread, hence it doesn't make sense to ignore suspended array in md_check_recovery(), which might cause sync_thread can't be unregistered. After commit f52f5c71f3d4 ("md: fix stopping sync thread"), following hang can be triggered by test shell/integrity-caching.sh: 1) suspend the array: raid_postsuspend mddev_suspend 2) stop the array: raid_dtr md_stop __md_stop_writes stop_sync_thread set_bit(MD_RECOVERY_INTR, &mddev->recovery); md_wakeup_thread_directly(mddev->sync_thread); wait_event(..., !test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) 3) sync thread done: md_do_sync set_bit(MD_RECOVERY_DONE, &mddev->recovery); md_wakeup_thread(mddev->thread); 4) daemon thread can't unregister sync thread: md_check_recovery if (mddev->suspended) return; -> return directly md_read_sync_thread clear_bit(MD_RECOVERY_RUNNING, &mddev->recovery); -> MD_RECOVERY_RUNNING can't be cleared, hence step 2 hang; This problem is not just related to dm-raid, fix it by ignoring suspended array in md_check_recovery(). And follow up patches will improve dm-raid better to frozen sync thread during suspend.

Aliases

CVE-2024-26758

JSON

To clipboard

{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "aliases": [
        "CVE-2024-26758"
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      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t ignore suspended array in md_check_recovery()\n\nmddev_suspend() never stop sync_thread, hence it doesn\u0027t make sense to\nignore suspended array in md_check_recovery(), which might cause\nsync_thread can\u0027t be unregistered.\n\nAfter commit f52f5c71f3d4 (\"md: fix stopping sync thread\"), following\nhang can be triggered by test shell/integrity-caching.sh:\n\n1) suspend the array:\nraid_postsuspend\n mddev_suspend\n\n2) stop the array:\nraid_dtr\n md_stop\n  __md_stop_writes\n   stop_sync_thread\n    set_bit(MD_RECOVERY_INTR, \u0026mddev-\u003erecovery);\n    md_wakeup_thread_directly(mddev-\u003esync_thread);\n    wait_event(..., !test_bit(MD_RECOVERY_RUNNING, \u0026mddev-\u003erecovery))\n\n3) sync thread done:\nmd_do_sync\n set_bit(MD_RECOVERY_DONE, \u0026mddev-\u003erecovery);\n md_wakeup_thread(mddev-\u003ethread);\n\n4) daemon thread can\u0027t unregister sync thread:\nmd_check_recovery\n if (mddev-\u003esuspended)\n   return; -\u003e return directly\n md_read_sync_thread\n clear_bit(MD_RECOVERY_RUNNING, \u0026mddev-\u003erecovery);\n -\u003e MD_RECOVERY_RUNNING can\u0027t be cleared, hence step 2 hang;\n\nThis problem is not just related to dm-raid, fix it by ignoring\nsuspended array in md_check_recovery(). And follow up patches will\nimprove dm-raid better to frozen sync thread during suspend.",
      "id": "GSD-2024-26758",
      "modified": "2024-02-20T06:02:29.301433Z",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t ignore suspended array in md_check_recovery()\n\nmddev_suspend() never stop sync_thread, hence it doesn\u0027t make sense to\nignore suspended array in md_check_recovery(), which might cause\nsync_thread can\u0027t be unregistered.\n\nAfter commit f52f5c71f3d4 (\"md: fix stopping sync thread\"), following\nhang can be triggered by test shell/integrity-caching.sh:\n\n1) suspend the array:\nraid_postsuspend\n mddev_suspend\n\n2) stop the array:\nraid_dtr\n md_stop\n  __md_stop_writes\n   stop_sync_thread\n    set_bit(MD_RECOVERY_INTR, \u0026mddev-\u003erecovery);\n    md_wakeup_thread_directly(mddev-\u003esync_thread);\n    wait_event(..., !test_bit(MD_RECOVERY_RUNNING, \u0026mddev-\u003erecovery))\n\n3) sync thread done:\nmd_do_sync\n set_bit(MD_RECOVERY_DONE, \u0026mddev-\u003erecovery);\n md_wakeup_thread(mddev-\u003ethread);\n\n4) daemon thread can\u0027t unregister sync thread:\nmd_check_recovery\n if (mddev-\u003esuspended)\n   return; -\u003e return directly\n md_read_sync_thread\n clear_bit(MD_RECOVERY_RUNNING, \u0026mddev-\u003erecovery);\n -\u003e MD_RECOVERY_RUNNING can\u0027t be cleared, hence step 2 hang;\n\nThis problem is not just related to dm-raid, fix it by ignoring\nsuspended array in md_check_recovery(). And follow up patches will\nimprove dm-raid better to frozen sync thread during suspend."
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t ignore suspended array in md_check_recovery()\n\nmddev_suspend() never stop sync_thread, hence it doesn\u0027t make sense to\nignore suspended array in md_check_recovery(), which might cause\nsync_thread can\u0027t be unregistered.\n\nAfter commit f52f5c71f3d4 (\"md: fix stopping sync thread\"), following\nhang can be triggered by test shell/integrity-caching.sh:\n\n1) suspend the array:\nraid_postsuspend\n mddev_suspend\n\n2) stop the array:\nraid_dtr\n md_stop\n  __md_stop_writes\n   stop_sync_thread\n    set_bit(MD_RECOVERY_INTR, \u0026mddev-\u003erecovery);\n    md_wakeup_thread_directly(mddev-\u003esync_thread);\n    wait_event(..., !test_bit(MD_RECOVERY_RUNNING, \u0026mddev-\u003erecovery))\n\n3) sync thread done:\nmd_do_sync\n set_bit(MD_RECOVERY_DONE, \u0026mddev-\u003erecovery);\n md_wakeup_thread(mddev-\u003ethread);\n\n4) daemon thread can\u0027t unregister sync thread:\nmd_check_recovery\n if (mddev-\u003esuspended)\n   return; -\u003e return directly\n md_read_sync_thread\n clear_bit(MD_RECOVERY_RUNNING, \u0026mddev-\u003erecovery);\n -\u003e MD_RECOVERY_RUNNING can\u0027t be cleared, hence step 2 hang;\n\nThis problem is not just related to dm-raid, fix it by ignoring\nsuspended array in md_check_recovery(). And follow up patches will\nimprove dm-raid better to frozen sync thread during suspend."
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        "id": "CVE-2024-26758",
        "lastModified": "2024-04-03T17:24:18.150",
        "metrics": {},
        "published": "2024-04-03T17:15:52.263",
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}

CVE-2024-26758 (GCVE-0-2024-26758)

Vulnerability from cvelistv5 – Published: 2024-04-03 17:00 – Updated: 2026-05-11 20:03

Title

md: Don't ignore suspended array in md_check_recovery()

Summary

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-04-04 15:44 UTC

CWE

CWE-129 - Improper Validation of Array Index

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/a55f0d6179a19c6b9…
https://git.kernel.org/stable/c/1baae052cccd08daf…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 68866e425be2ef2664aa5c691bb3ab789736acf5 , < a55f0d6179a19c6b982e2dc344d58c98647a3be0 (git) Affected: 68866e425be2ef2664aa5c691bb3ab789736acf5 , < 1baae052cccd08daf9a9d64c3f959d8cdb689757 (git)
Linux	Linux	Affected: 3.0 Unaffected: 0 , < 3.0 (semver) Unaffected: 6.7.7 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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