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CVE-2025-39800
btrfs: abort transaction on unexpected eb generation at btrfs_copy_root()
Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: abort transaction on unexpected eb generation at btrfs_copy_root() If we find an unexpected generation for the extent buffer we are cloning at btrfs_copy_root(), we just WARN_ON() and don't error out and abort the transaction, meaning we allow to persist metadata with an unexpected generation. Instead of warning only, abort the transaction and return -EUCLEAN.

INFO

Published Date :

Sept. 15, 2025, 1:15 p.m.

Last Modified :

Sept. 15, 2025, 3:21 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2025-39800 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
Solution
Abort transactions when encountering unexpected extent buffer generations in btrfs_copy_root.
  • Update the Linux kernel to the latest stable version.
  • Apply the specific patch for the btrfs: abort transaction issue.
  • Ensure metadata integrity checks are properly enforced.
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-2025-39800.

URL Resource
https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8
https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7a
https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6a
https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892f
https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-39800 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-2025-39800 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-2025-39800 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-2025-39800 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.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 15, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: btrfs: abort transaction on unexpected eb generation at btrfs_copy_root() If we find an unexpected generation for the extent buffer we are cloning at btrfs_copy_root(), we just WARN_ON() and don't error out and abort the transaction, meaning we allow to persist metadata with an unexpected generation. Instead of warning only, abort the transaction and return -EUCLEAN.
    Added Reference https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8
    Added Reference https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7a
    Added Reference https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6a
    Added Reference https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892f
    Added Reference https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3
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
No CVSS metrics available for this vulnerability.