CVE-2017-7542 Integer overflow in Linux kernel versions up to and including 4.12

What is CVE-2017-7542?

CVE-2017-7542 is a medium-severity vulnerability in Linux kernel, published on 21 Jul 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The ip6_find_1stfragopt function in net/ipv6/output_core.c in the Linux kernel through 4.12.3 allows local users to cause a denial of service (integer overflow and infinite loop) by leveraging the ability to open a raw socket.

Weakness: CWE-835, CWE-190

Which versions are affected by CVE-2017-7542?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-7542?

Apply the vendor's patch.

Is CVE-2017-7542 being exploited?

There is no known exploitation of CVE-2017-7542 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-2017-7542, GHSA-p8mm-976g-672h, UBUNTU-CVE-2017-7542.