CVE-2025-71184

MEDIUM EPSS 2.0%
Published Jan 31, 20265mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jan 31, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix NULL dereference on root when tracing inode eviction When evicting an inode the first thing we do is to setup tracing for it, which implies fetching the root's id. But in btrfs_evict_inode() the root might be NULL, as implied in the next check that we do in btrfs_evict_inode(). Hence, we either should set the ->root_objectid to 0 in case the root is NULL, or we move tracing setup after checking that the root is not NULL. Setting the rootid to 0 at least gives us the possibility to trace this call even in the case when the root is NULL, so that's the solution taken here.

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
2.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥2.6.39.1  –  <6.6.130
linuxlinux_kernel*≥6.7  –  <6.12.66
linuxlinux_kernel*≥6.13  –  <6.18.6
linuxlinux_kernel2.6.39any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/582ba48e4a4c06fef6bdcf4e57b7b9af660bbd0c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64d8abd8c5305795a2b35fc96039d99d34f5e762
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/99e057f3d3ef24b99a7b1d84e01dd1bd890098da
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f157dd661339fc6f5f2b574fe2429c43bd309534
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/582ba48e4a4c06fef6bdcf4e57b7b9af660bbd0c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64d8abd8c5305795a2b35fc96039d99d34f5e762
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/99e057f3d3ef24b99a7b1d84e01dd1bd890098da
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f157dd661339fc6f5f2b574fe2429c43bd309534
    Patch