CVE-2023-53506
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-01

Last updated on: 2025-10-02

Assigner: kernel.org

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.
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Meta Information
Published
2025-10-01
Last Modified
2025-10-02
Generated
2026-05-07
AI Q&A
2025-10-01
EPSS Evaluated
2026-05-05
NVD
CVE-2023-53506
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability involves the Linux kernel's handling of very long extents in the UDF filesystem. The kernel attempted to merge very long extents by pushing as much length as possible to the first extent, but this approach was unnecessarily complicated and contained a bug. This bug could corrupt extents in the file, as demonstrated by a syzbot reproducer. The fix was to stop merging extents that are too long together.


How can this vulnerability impact me? :

The vulnerability can lead to corruption of file extents in the UDF filesystem, potentially causing data corruption or loss when handling files with very long extents. This could affect system stability or data integrity on affected Linux systems.


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