CVE-2013-4511: Linux Kernel

Medium severity, CVSS 6.9. EPSS: 0.6% chance of exploitation in the next 30 days.

Multiple integer overflows in Alchemy LCD frame-buffer drivers in the Linux kernel before 3.12 allow local users to create a read-write memory mapping for the entirety of kernel memory, and consequently gain privileges, via crafted mmap operations, related to the (1) au1100fb_fb_mmap function in drivers/video/au1100fb.c and the (2) au1200fb_fb_mmap function in drivers/video/au1200fb.c.

Affected products

• Linux Linux Kernel: from 2.6.12, before 3.2.53 (fixed in 3.2.53); from 3.3, before 3.4.69 (fixed in 3.4.69); from 3.5, before 3.10.19 (fixed in 3.10.19); from 3.11, before 3.11.8 (fixed in 3.11.8)

Published 2013-11-12. Last modified 2026-06-16.