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5.5
MEDIUM CVSS 3.1
CVE-2025-38243
btrfs: fix invalid inode pointer dereferences during log replay
Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid inode pointer dereferences during log replay In a few places where we call read_one_inode(), if we get a NULL pointer we end up jumping into an error path, or fallthrough in case of __add_inode_ref(), where we then do something like this: iput(&inode->vfs_inode); which results in an invalid inode pointer that triggers an invalid memory access, resulting in a crash. Fix this by making sure we don't do such dereferences.

INFO

Published Date :

July 9, 2025, 11:15 a.m.

Last Modified :

Nov. 19, 2025, 3:37 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2025-38243 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Apply kernel patches to prevent invalid memory access and crashes.
  • Update the Linux kernel to the latest stable version.
  • Apply specific patches for the btrfs module.
  • Recompile the kernel with updated btrfs drivers.
  • Test the system for stability after applying updates.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-38243.

URL Resource
https://git.kernel.org/stable/c/2dcf838cf5c2f0f4501edaa1680fcad03618d760 Patch
https://git.kernel.org/stable/c/401d098f92ea69d8a75f8b845daf343e511681ba Patch
https://git.kernel.org/stable/c/ba8386d662cc51cc5382688bbf7a152b0b0b27cf Patch
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-38243 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-38243 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-38243 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-38243 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Nov. 19, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.15 up to (excluding) 6.15.5 *cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/2dcf838cf5c2f0f4501edaa1680fcad03618d760 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/401d098f92ea69d8a75f8b845daf343e511681ba Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/ba8386d662cc51cc5382688bbf7a152b0b0b27cf Types: Patch
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jul. 10, 2025

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/401d098f92ea69d8a75f8b845daf343e511681ba
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jul. 09, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid inode pointer dereferences during log replay In a few places where we call read_one_inode(), if we get a NULL pointer we end up jumping into an error path, or fallthrough in case of __add_inode_ref(), where we then do something like this: iput(&inode->vfs_inode); which results in an invalid inode pointer that triggers an invalid memory access, resulting in a crash. Fix this by making sure we don't do such dereferences.
    Added Reference https://git.kernel.org/stable/c/2dcf838cf5c2f0f4501edaa1680fcad03618d760
    Added Reference https://git.kernel.org/stable/c/ba8386d662cc51cc5382688bbf7a152b0b0b27cf
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact