Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-71184

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
31/01/2026
Last modified:
25/03/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> btrfs: fix NULL dereference on root when tracing inode eviction<br /> <br /> When evicting an inode the first thing we do is to setup tracing for it,<br /> which implies fetching the root&amp;#39;s id. But in btrfs_evict_inode() the<br /> root might be NULL, as implied in the next check that we do in<br /> btrfs_evict_inode().<br /> <br /> Hence, we either should set the -&gt;root_objectid to 0 in case the root is<br /> NULL, or we move tracing setup after checking that the root is not<br /> NULL. Setting the rootid to 0 at least gives us the possibility to trace<br /> this call even in the case when the root is NULL, so that&amp;#39;s the solution<br /> taken here.

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:*:*:*:*:*:*:*:* 2.6.39.1 (including) 6.6.130 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.66 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.18.6 (excluding)
cpe:2.3:o:linux:linux_kernel:2.6.39:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools