CVE-2017-7558 Information disclosure in kernel

What is CVE-2017-7558?

CVE-2017-7558 is a medium-severity vulnerability in Debian Debian Linux, published on 26 Jul 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A kernel data leak due to an out-of-bound read was found in the Linux kernel in inet_diag_msg_sctp{,l}addr_fill() and sctp_get_sctp_info() functions present since version 4.7-rc1 through version 4.13. A data leak happens when these functions fill in sockaddr data structures used to export socket's diagnostic information. As a result, up to 100 bytes of the slab data could be leaked to a userspace.

Weakness: CWE-125

Which versions are affected by CVE-2017-7558?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2017-7558?

Apply the vendor's patch.

Is CVE-2017-7558 being exploited?

There is no known exploitation of CVE-2017-7558 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2017-7558, GHSA-5vf3-w6cv-wf86, UBUNTU-CVE-2017-7558.