CVE-2017-6347 Memory corruption in n/a

What is CVE-2017-6347?

CVE-2017-6347 is a high-severity memory corruption 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

The ip_cmsg_recv_checksum function in net/ipv4/ip_sockglue.c in the Linux kernel before 4.10.1 has incorrect expectations about skb data layout, which allows local users to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted system calls, as demonstrated by use of the MSG_MORE flag in conjunction with loopback UDP transmission.

Weakness: CWE-125

Which versions are affected by CVE-2017-6347?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-6347?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2017-6347 being exploited?

There is no known exploitation of CVE-2017-6347 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-2017-6347, GHSA-fcgc-hv63-hjmw, UBUNTU-CVE-2017-6347.