CVE-2024-43820

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux16c4770c75b1223998adbeb7286f9a15c65fba73 < a5c15a78c0e1631b7df822b56e8b6424e4d1ca3eaffected
LinuxLinux16c4770c75b1223998adbeb7286f9a15c65fba73 < 3199a34bfaf7561410e0be1e33a61eba870768fcaffected
LinuxLinuxaf916cb66a80597f3523bc85812e790bcdcfd62baffected
LinuxLinuxeaa8fc9b092837cf2c754bde1a15d784ce9a85abaffected
LinuxLinux6.7.12 < 6.8affected
LinuxLinux6.8.3 < 6.9affected
LinuxLinux6.9affected
LinuxLinux0 < 6.9unaffected
LinuxLinux6.10.3 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References