CVE-2024-56774

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().

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3ed51857a50f530ac7a1482e069dfbd1298558d4	Patch
https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab	Patch
https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece	Patch
https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b	Patch
https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6	Patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc1::::::

History

No history.

Information

Published : 2025-01-08 18:15

Updated : 2025-11-03 21:18

NVD link : CVE-2024-56774

Mitre link : CVE-2024-56774

CVE.ORG link : CVE-2024-56774

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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