CVE-2017-6353 Use after free in n/a

What is CVE-2017-6353?

CVE-2017-6353 is a medium-severity use after free vulnerability in Linux kernel, published on 1 Mar 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

net/sctp/socket.c in the Linux kernel through 4.10.1 does not properly restrict association peel-off operations during certain wait states, which allows local users to cause a denial of service (invalid unlock and double free) via a multithreaded application. NOTE: this vulnerability exists because of an incorrect fix for CVE-2017-5986.

Weakness: CWE-415

Which versions are affected by CVE-2017-6353?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-6353?

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-2017-6353 being exploited?

There is no known exploitation of CVE-2017-6353 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-2017-6353, GHSA-8whq-7xh2-jxhw.