CVE-2002-1826: Grsecurity Kernel Patch

Medium severity, CVSS 4.6. EPSS: 1% chance of exploitation in the next 30 days.

grsecurity 1.9.4 for Linux kernel 2.4.18 allows local users to bypass read-only permissions by using mmap to directly map /dev/mem or /dev/kmem to kernel memory.

Affected products

• Grsecurity Grsecurity Kernel Patch: version 1.9.4 only

Published 2002-12-31. Last modified 2026-06-16.