Debian: CVE-2024-56774: linux -- security update

Debian: CVE-2024-56774: linux -- security update

Severity

5

CVSS

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

Published

01/08/2025

Created

01/14/2025

Added

01/13/2025

Modified

01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: add a sanity check for btrfs root in btrfs_search_slot() Syzbot reports a null-ptr-deref in btrfs_search_slot(). The reproducer is using rescue=ibadroots, and the extent tree root is corrupted thus the extent tree is NULL. When scrub tries to search the extent tree to gather the needed extent info, btrfs_search_slot() doesn't check if the target root is NULL or not, resulting the null-ptr-deref. Add sanity check for btrfs root before using it in btrfs_search_slot().

Solution(s)

• debian-upgrade-linux

References

• https://attackerkb.com/topics/cve-2024-56774
• CVE - 2024-56774