CVE-2024-56774

MEDIUM EPSS 10.3%
Published Jan 8, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jan 8, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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().

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
10.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.11  –  <5.15.174
linuxlinux_kernel*≥5.16  –  <6.1.120
linuxlinux_kernel*≥6.2  –  <6.6.64
linuxlinux_kernel*≥6.7  –  <6.12.4
linuxlinux_kernel6.13any

References 6

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

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3ed51857a50f530ac7a1482e069dfbd1298558d4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6
    Patch