CVE-2025-0690: Red Hat Enterprise Linux 10

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence.

Affected products

• Red Hat Red Hat Enterprise Linux 10
• Red Hat Red Hat Enterprise Linux 7
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9: before 1:2.06-104.el9_6 (fixed in 1:2.06-104.el9_6)
• Red Hat Red Hat Openshift Container Platform 4

Published 2025-02-24. Last modified 2026-06-30.