What’s Vulnerable › Vulnerabilities

CVE-2013-4511

• Severity: medium (CVSS 6.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2013-11-12 · updated 2026-06-16
• Weakness: CWE-189

Description

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 kernel: from 2.6.12 before 3.2.53; from 3.3 before 3.4.69; from 3.5 before 3.10.19; from 3.11 before 3.11.8 — fixed in 3.10.19, 3.11.8, 3.2.53, 3.4.69

How to fix

Upgrade to a fixed version: Linux kernel 3.10.19, 3.11.8, 3.2.53, 3.4.69. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7314e613d5ff9f0934f7a0f74ed7973b903315d1
• http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
• http://lists.opensuse.org/opensuse-updates/2014-02/msg00045.html
• http://www.openwall.com/lists/oss-security/2013/11/04/22
• http://www.ubuntu.com/usn/USN-2036-1
• http://www.ubuntu.com/usn/USN-2037-1
• http://www.ubuntu.com/usn/USN-2066-1
• http://www.ubuntu.com/usn/USN-2067-1
• http://www.ubuntu.com/usn/USN-2068-1
• http://www.ubuntu.com/usn/USN-2069-1
• http://www.ubuntu.com/usn/USN-2070-1

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