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CVE-2024-56774

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
08/01/2025
Last modified:
03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> btrfs: add a sanity check for btrfs root in btrfs_search_slot()<br /> <br /> Syzbot reports a null-ptr-deref in btrfs_search_slot().<br /> <br /> The reproducer is using rescue=ibadroots, and the extent tree root is<br /> corrupted thus the extent tree is NULL.<br /> <br /> When scrub tries to search the extent tree to gather the needed extent<br /> info, btrfs_search_slot() doesn&amp;#39;t check if the target root is NULL or<br /> not, resulting the null-ptr-deref.<br /> <br /> Add sanity check for btrfs root before using it in btrfs_search_slot().

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.174 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.1.120 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.64 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.4 (excluding)
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools