Riskcovery

CVE-2024-43820

dm-raid: Fix WARN_ON_ONCE check for sync_thread in raid_resume

State
Published
Severity
Not scored
Published
Aug 17, 2024
Updated
May 23, 2026
Reserved
Aug 17, 2024

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 16c4770c75b1223998adbeb7286f9a15c65fba73 to before a5c15a78c0e1631b7df822b56e8b6424e4d1ca3eAffected
  • 16c4770c75b1223998adbeb7286f9a15c65fba73 to before 3199a34bfaf7561410e0be1e33a61eba870768fcAffected
  • af916cb66a80597f3523bc85812e790bcdcfd62bAffected
  • eaa8fc9b092837cf2c754bde1a15d784ce9a85abAffected
  • 6.7.12 to before 6.8Affected
  • 6.8.3 to before 6.9Affected
LinuxLinux
  • 6.9Affected
  • before 6.9Not affected
  • 6.10.3 through 6.10.*Not affected
  • 6.11 and laterNot affected

References

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