CVE-2024-38576

high

Description

In the Linux kernel, the following vulnerability has been resolved: rcu: Fix buffer overflow in print_cpu_stall_info() The rcuc-starvation output from print_cpu_stall_info() might overflow the buffer if there is a huge difference in jiffies difference. The situation might seem improbable, but computers sometimes get very confused about time, which can result in full-sized integers, and, in this case, buffer overflow. Also, the unsigned jiffies difference is printed using %ld, which is normally for signed integers. This is intentional for debugging purposes, but it is not obvious from the code. This commit therefore changes sprintf() to snprintf() and adds a clarifying comment about intention of %ld format. Found by Linux Verification Center (linuxtesting.org) with SVACE.

References

https://git.kernel.org/stable/c/e2228ed3fe7aa838fba87c79a76fb1ad9ea47138

https://git.kernel.org/stable/c/afb39909bfb5c08111f99e21bf5be7505f59ff1c

https://git.kernel.org/stable/c/9351e1338539cb7f319ffc1210fa9b2aa27384b5

https://git.kernel.org/stable/c/4c3e2ef4d8ddd313c8ce3ac30505940bea8d6257

https://git.kernel.org/stable/c/3758f7d9917bd7ef0482c4184c0ad673b4c4e069

Details

Source: Mitre, NVD

Published: 2024-06-19

Updated: 2024-11-07

Risk Information

CVSS v2

Base Score: 5.9

Vector: CVSS2#AV:L/AC:H/Au:M/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High