CVE-2012-4542 Security feature bypass in n/a

What is CVE-2012-4542?

CVE-2012-4542 is a medium-severity vulnerability in Linux kernel, published on 28 Feb 2013. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

block/scsi_ioctl.c in the Linux kernel through 3.8 does not properly consider the SCSI device class during authorization of SCSI commands, which allows local users to bypass intended access restrictions via an SG_IO ioctl call that leverages overlapping opcodes.

Weakness: CWE-264

Which versions are affected by CVE-2012-4542?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2012-4542?

Apply the vendor's patch.

Is CVE-2012-4542 being exploited?

There is no known exploitation of CVE-2012-4542 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-2012-4542, GHSA-jcfv-wjcf-phjg, ROOT-OS-DEBIAN-12-CVE-2012-4542, ROOT-OS-DEBIAN-13-CVE-2012-4542, UBUNTU-CVE-2012-4542.