CVE-2017-15265 Use after free in n/a

High 7.0 Published 16 Oct 2017 Updated 5 Aug 2024

Local attackers can trigger a use-after-free in the Linux kernel ALSA subsystem via crafted ioctl calls, causing denial of service or potential code execution.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2017-15265?

CVE-2017-15265 is a high-severity use after free vulnerability in Linux kernel, published on 16 Oct 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Race condition in the ALSA subsystem in the Linux kernel before 4.13.8 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted /dev/snd/seq ioctl calls, related to sound/core/seq/seq_clientmgr.c and sound/core/seq/seq_ports.c.

Weakness: CWE-416, CWE-362

Which versions are affected by CVE-2017-15265?

It affects 1 product.

Linux distribution packages (15)

`kernel` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-PAE` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-PAE-debuginfo` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-PAE-devel` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-debug` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-debug-debuginfo` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-debug-devel` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-debuginfo` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-debuginfo-common` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-devel` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-doc` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-headers` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-xen` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-xen-debuginfo` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`
`kernel-xen-devel` Red Hat:rhel_aus:5.9	All versions	`0:2.6.18-348.42.1.el5`

Products include Linux kernel.

How do I fix CVE-2017-15265?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2017-15265 being exploited?

There is no known exploitation of CVE-2017-15265 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-15265, GHSA-cc5r-x8fh-jwv3, RHSA-2018:3823, UBUNTU-CVE-2017-15265.