CVE-2024-58017 Information

Description

In the Linux kernel the following vulnerability has been resolved:

printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX

Shifting 1 « 31 on a 32-bit int causes signed integer overflow which leads to undefined behavior. To prevent this cast 1 to u32 before performing the shift ensuring well-defined behavior.

This change explicitly avoids any potential overflow by ensuring that the shift occurs on an unsigned 32-bit integer.

Reference

https://git.kernel.org/stable/c/3d6f83df8ff2d5de84b50377e4f0d45e25311c7a https://git.kernel.org/stable/c/404e5fd918a0b14abec06c7eca128f04c9b98e41 https://git.kernel.org/stable/c/4a2c4e7265b8eed83c25d86d702cea06493cab18 https://git.kernel.org/stable/c/4acf6bab775dbd22a9a799030a808a7305e01d63 https://git.kernel.org/stable/c/9a6d43844de2479a3ff8d674c3e2a16172e01598