CVE-2024-26758
- Source
- https://cve.org/CVERecord?id=CVE-2024-26758
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26758.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-26758
- Downstream
- Related
- Published
- 2024-04-03T17:00:42Z
- Modified
- 2026-08-12T03:51:27Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- md: Don't ignore suspended array in md_check_recovery()
- 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:
-
suspend the array: raid_postsuspend mddev_suspend
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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))
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sync thread done: md_do_sync set_bit(MD_RECOVERY_DONE, &mddev->recovery); md_wakeup_thread(mddev->thread);
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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.
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- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26758.json" }- References
-
- https://git.kernel.org/stable/c/1baae052cccd08daf9a9d64c3f959d8cdb689757
- https://git.kernel.org/stable/c/a55f0d6179a19c6b982e2dc344d58c98647a3be0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26758.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-26758
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git