CVE-2022-50762
Unknown Unknown - Not Provided
Integer Overflow in Linux Kernel NTFS3 Driver Causes UBSAN Error

Publication date: 2025-12-24

Last updated on: 2025-12-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst() syzbot reported UBSAN error as below: [ 76.901829][ T6677] ================================================================================ [ 76.903908][ T6677] UBSAN: shift-out-of-bounds in fs/ntfs3/super.c:675:13 [ 76.905363][ T6677] shift exponent -247 is negative This patch avoid this error.
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Meta Information
Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-06-16
AI Q&A
2025-12-24
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50762
EUVD
EUVD-2022-55799
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a UBSAN (Undefined Behavior Sanitizer) error in the Linux kernel's NTFS3 filesystem driver, specifically in the function true_sectors_per_clst(). It involves a shift-out-of-bounds error where a negative shift exponent (-247) occurs, which can cause undefined behavior or kernel errors. The patch avoids this error by correcting the code to prevent the invalid shift operation.

Impact Analysis

This vulnerability can cause kernel errors or crashes due to undefined behavior in the NTFS3 filesystem driver when processing certain data. This may lead to system instability or denial of service if exploited or triggered.

Mitigation Strategies

Apply the patch that resolves the UBSAN error in the Linux kernel's fs/ntfs3 module to avoid the shift-out-of-bounds error in true_sectors_per_clst().

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