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CVE-2023-52631

Disclosure Date: April 02, 2024
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Description

In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: Fix an NULL dereference bug

The issue here is when this is called from ntfs_load_attr_list(). The
“size” comes from le32_to_cpu(attr->res.data_size) so it can’t overflow
on a 64bit systems but on 32bit systems the “+ 1023” can overflow and
the result is zero. This means that the kmalloc will succeed by
returning the ZERO_SIZE_PTR and then the memcpy() will crash with an
Oops on the next line.

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CVSS V3 Severity and Metrics
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General Information

Vendors

  • Linux

Products

  • Linux
Technical Analysis