CVE-2013-4270 Security feature bypass in n/a

What is CVE-2013-4270?

CVE-2013-4270 is a low-severity vulnerability in Linux kernel, published on 9 Dec 2013. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The net_ctl_permissions function in net/sysctl_net.c in the Linux kernel before 3.11.5 does not properly determine uid and gid values, which allows local users to bypass intended /proc/sys/net restrictions via a crafted application.

Weakness: CWE-20

Which versions are affected by CVE-2013-4270?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2013-4270?

Upgrade to a fixed version.

Is CVE-2013-4270 being exploited?

There is no known exploitation of CVE-2013-4270 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2013-4270, GHSA-6f76-xg48-m996.