CVE-2023-52631
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedApr 2, 2024
First seenApr 2, 2024
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel5.15.149, 6.1.78, 6.6.17, 6.7.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15 ≤ v < 5.15.149, 5.16 ≤ v < 6.1.78, 6.2 ≤ v < 6.6.17, 6.7 ≤ v < 6.7.5, 6.8 | 5.15.149, 6.1.78, 6.6.17, 6.7.5 |
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