Critical · published April 17, 2024
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix underflow in parse_server_interfaces()
In this loop, we step through the buffer and after each item we check
if the size_left is greater than the minimum size we need. However,
the problem is that "bytes_left" is type ssize_t while sizeof() is type
size_t. That means that because of type promotion, the comparison is
done as an unsigned and if we have negative bytes left the loop
continues instead of ending.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 4.18, < 6.1.79 | 6.1.79 |
| linux/linux_kernel | ≥ 6.2, < 6.6.18 | 6.6.18 |
| linux/linux_kernel | ≥ 6.7, < 6.7.6 | 6.7.6 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |