What’s Vulnerable › Vulnerabilities

CVE-2013-6282: Linux Kernel Improper Input Validation Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-09-15
• EPSS: 39.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2013-11-20 · updated 2026-06-17
• Weakness: CWE-20

Description

The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addresses, which allows attackers to read or modify the contents of arbitrary kernel memory locations via a crafted application, as exploited in the wild against Android devices in October and November 2013.

Affected products

• Linux kernel: before 3.2.54; from 3.3 before 3.4.12; from 3.5 before 3.5.5 — fixed in 3.2.54, 3.4.12, 3.5.5

How to fix

Upgrade to a fixed version: Linux kernel 3.2.54, 3.4.12, 3.5.5. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8404663f81d212918ff85f493649a7991209fa04
• http://www.codeaurora.org/projects/security-advisories/missing-access-checks-putusergetuser-kernel-api-cve-2013-6282
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.5.5
• http://www.openwall.com/lists/oss-security/2013/11/14/11
• http://www.securityfocus.com/bid/63734
• http://www.ubuntu.com/usn/USN-2067-1
• https://github.com/torvalds/linux/commit/8404663f81d212918ff85f493649a7991209fa04
• https://www.exploit-db.com/exploits/40975/
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8404663f81d212918ff85f493649a7991209fa04
• http://www.codeaurora.org/projects/security-advisories/missing-access-checks-putusergetuser-kernel-api-cve-2013-6282
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.5.5
• http://www.openwall.com/lists/oss-security/2013/11/14/11

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