CVE-2024-43820

dm-raid: Fix WARN_ON_ONCE check for sync_thread in raid_resume

Description

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.

N/A

CVSS

Severity:

EPSS 0.10%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/a5c15a78c0e1631b7df822b56e8b6424e4d1ca3e
https://git.kernel.org/stable/c/3199a34bfaf7561410e0be1e33a61eba870768fc

Frequently Asked Questions

What is the severity of CVE-2024-43820?: CVE-2024-43820 has not yet been assigned a CVSS score.
How to fix CVE-2024-43820?: To fix CVE-2024-43820, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-43820 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-43820 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-43820?: CVE-2024-43820 affects Linux Linux, Linux Linux.

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