CVE-2024-26758
- Source
- https://cve.org/CVERecord?id=CVE-2024-26758
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-26758.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-26758
- Downstream
- Related
- Published
- 2024-04-03T17:00:42.448Z
- Modified
- 2026-03-20T12:35:11.373442Z
- 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 mdcheckrecovery()
mddevsuspend() never stop syncthread, hence it doesn't make sense to ignore suspended array in mdcheckrecovery(), 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: raidpostsuspend mddevsuspend
2) stop the array: raiddtr mdstop _mdstopwrites stopsyncthread setbit(MDRECOVERYINTR, &mddev->recovery); mdwakeupthreaddirectly(mddev->syncthread); waitevent(..., !testbit(MDRECOVERYRUNNING, &mddev->recovery))
3) sync thread done: mddosync setbit(MDRECOVERYDONE, &mddev->recovery); mdwakeup_thread(mddev->thread);
4) daemon thread can't unregister sync thread: mdcheckrecovery if (mddev->suspended) return; -> return directly mdreadsyncthread clearbit(MDRECOVERYRUNNING, &mddev->recovery); -> MDRECOVERYRUNNING can't be cleared, hence step 2 hang;
This problem is not just related to dm-raid, fix it by ignoring suspended array in mdcheckrecovery(). And follow up patches will improve dm-raid better to frozen sync thread during suspend.
- 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