Oracle Linux: CVE-2024-46840: ELSA-2024-12813: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

Oracle Linux: CVE-2024-46840: ELSA-2024-12813: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

Severity

5

CVSS

(AV:L/AC:L/Au:S/C:N/I:N/A:C)

Published

09/27/2024

Created

11/23/2024

Added

11/21/2024

Modified

01/23/2025

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: clean up our handling of refs == 0 in snapshot delete In reada we BUG_ON(refs == 0), which could be unkind since we aren't holding a lock on the extent leaf and thus could get a transient incorrect answer.In walk_down_proc we also BUG_ON(refs == 0), which could happen if we have extent tree corruption.Change that to return -EUCLEAN.In do_walk_down() we catch this case and handle it correctly, however we return -EIO, which -EUCLEAN is a more appropriate error code. Finally in walk_up_proc we have the same BUG_ON(refs == 0), so convert that to proper error handling.Also adjust the error message so we can actually do something with the information.

Solution(s)

• oracle-linux-upgrade-kernel-uek

References

• https://attackerkb.com/topics/cve-2024-46840
• CVE - 2024-46840
• ELSA-2024-12813
• ELSA-2024-12815
• ELSA-2024-12868