CVE-2023-52631: fs/ntfs3: Fix an NULL dereference bug
First published: Tue Apr 02 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.12.5-1 6.12.6-1 |
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Reference Links
- https://git.kernel.org/stable/c/686820fe141ea0220fc6fdfc7e5694f915cf64b2
- https://git.kernel.org/stable/c/ae4acad41b0f93f1c26cc0fc9135bb79d8282d0b
- https://git.kernel.org/stable/c/b2dd7b953c25ffd5912dda17e980e7168bebcf6c
- https://git.kernel.org/stable/c/ec1bedd797588fe38fc11cba26d77bb1d9b194c6
- https://git.kernel.org/stable/c/fb7bcd1722bc9bc55160378f5f99c01198fd14a7
- https://launchpad.net/bugs/cve/CVE-2023-52631
- https://git.kernel.org/linus/b2dd7b953c25ffd5912dda17e980e7168bebcf6c
- https://security-tracker.debian.org/tracker/CVE-2023-52631
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52631
- https://nvd.nist.gov/vuln/detail/CVE-2023-52631
- https://ubuntu.com/security/CVE-2023-52631
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