Description

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

init/main.c: Fix potential static_command_line memory overflow

We allocate memory of size 'xlen + strlen(boot_command_line) + 1' for
static_command_line, but the strings copied into static_command_line are
extra_command_line and command_line, rather than extra_command_line and
boot_command_line.

When strlen(command_line) > strlen(boot_command_line), static_command_line
will overflow.

This patch just recovers strlen(command_line) which was miss-consolidated
with strlen(boot_command_line) in the commit f5c7310ac73e ("init/main: add
checks for the return value of memblock_alloc*()")

Classification

CVE ID: CVE-2024-26988

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 12.41% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

References

https://git.kernel.org/stable/c/2ef607ea103616aec0289f1b65d103d499fa903a
https://git.kernel.org/stable/c/0dc727a4e05400205358a22c3d01ccad2c8e1fe4
https://git.kernel.org/stable/c/76c2f4d426a5358fced5d5990744d46f10a4ccea
https://git.kernel.org/stable/c/81cf85ae4f2dd5fa3e43021782aa72c4c85558e8
https://git.kernel.org/stable/c/936a02b5a9630c5beb0353c3085cc49d86c57034
https://git.kernel.org/stable/c/46dad3c1e57897ab9228332f03e1c14798d2d3b9

Timeline