CVE-2024-43820: dm-raid: Fix WARN_ON_ONCE check for sync_thread in raid_resume
First published: Sat Aug 17 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: dm-raid: Fix WARN_ON_ONCE check for sync_thread in raid_resume rm-raid devices will occasionally trigger the following warning when being resumed after a table load because DM_RECOVERY_RUNNING is set: WARNING: CPU: 7 PID: 5660 at drivers/md/dm-raid.c:4105 raid_resume+0xee/0x100 [dm_raid] The failing check is: WARN_ON_ONCE(test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)); This check is designed to make sure that the sync thread isn't registered, but md_check_recovery can set MD_RECOVERY_RUNNING without the sync_thread ever getting registered. Instead of checking if MD_RECOVERY_RUNNING is set, check if sync_thread is non-NULL.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/3199a34bfaf7561410e0be1e33a61eba870768fc
- https://git.kernel.org/stable/c/a5c15a78c0e1631b7df822b56e8b6424e4d1ca3e
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-43820
- https://nvd.nist.gov/vuln/detail/CVE-2024-43820
- https://launchpad.net/bugs/cve/CVE-2024-43820
- https://security-tracker.debian.org/tracker/CVE-2024-43820
- https://ubuntu.com/security/CVE-2024-43820
- https://git.kernel.org/linus/3199a34bfaf7561410e0be1e33a61eba870768fc
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