CVE-2026-68187

A flaw was found in the Linux kernel's exec subsystem, specifically within the transfer_args_to_stack() function. A local user could provide a specially crafted argument or environment string during process creation, causing an unsigned loop counter to wrap. This leads to an out-of-bounds read and memory corruption, which can result in a kernel panic and a system crash, effectively causing a Denial of Service (DoS).

This issue affects the execve argument transfer path. When bprm->p is below PAGE_SIZE, the unsigned loop counter never terminates. A local user providing crafted exec arguments could hang the kernel.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.