CVE-2012-6547 Information disclosure in n/a

What is CVE-2012-6547?

CVE-2012-6547 is a low-severity vulnerability in Linux kernel, published on 14 Mar 2013. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The __tun_chr_ioctl function in drivers/net/tun.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.

Weakness: CWE-200

Which versions are affected by CVE-2012-6547?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2012-6547?

Upgrade to a fixed version.

Is CVE-2012-6547 being exploited?

There is no known exploitation of CVE-2012-6547 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-2012-6547, GHSA-pg4f-8998-6h6f.