CVE-2011-5321 Null dereference in n/a

What is CVE-2011-5321?

CVE-2011-5321 is a medium-severity vulnerability in Linux kernel, published on 2 May 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The tty_open function in drivers/tty/tty_io.c in the Linux kernel before 3.1.1 mishandles a driver-lookup failure, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via crafted access to a device file under the /dev/pts directory.

Which versions are affected by CVE-2011-5321?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2011-5321?

Apply the vendor's patch.

Is CVE-2011-5321 being exploited?

There is no known exploitation of CVE-2011-5321 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-2011-5321, GHSA-w32m-rx9f-gjv3.