CVE-2023-53506
udf: Do not bother merging very long extents
Description
In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents When merging very long extents we try to push as much length as possible to the first extent. However this is unnecessarily complicated and not really worth the trouble. Furthermore there was a bug in the logic resulting in corrupting extents in the file as syzbot reproducer shows. So just don't bother with the merging of extents that are too long together.
INFO
Published Date :
Oct. 1, 2025, 12:15 p.m.
Last Modified :
Oct. 2, 2025, 7:11 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to the latest version.
- Apply patches related to UDF extent merging.
- Test file integrity 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-2023-53506.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-53506 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-2023-53506
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-2023-53506 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-53506 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 01, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents When merging very long extents we try to push as much length as possible to the first extent. However this is unnecessarily complicated and not really worth the trouble. Furthermore there was a bug in the logic resulting in corrupting extents in the file as syzbot reproducer shows. So just don't bother with the merging of extents that are too long together. Added Reference https://git.kernel.org/stable/c/3d20e3b768aff32112bdce8d3219d923ae75f9f1 Added Reference https://git.kernel.org/stable/c/53cafe1d6d8ef9f93318e5bfccc0d24f27d41ced Added Reference https://git.kernel.org/stable/c/5d029799d381a9ee06209a222cae75f04c5d5304 Added Reference https://git.kernel.org/stable/c/7a965da79f2d22601f329cbfce588386b0847544 Added Reference https://git.kernel.org/stable/c/965982feb333aefa9256c0fe188b5f1b958aef63 Added Reference https://git.kernel.org/stable/c/9a8d602f0723586e668bae7e65c832ceb9bcc8bc Added Reference https://git.kernel.org/stable/c/adac9ac6d2e04ea0782b91a00ba10706002f3ec4 Added Reference https://git.kernel.org/stable/c/d52252a1de4cf96a34f722b0cd8902d8ff78eb57