CVE-2017-7558

Name: CVE-2017-7558
Creator: NVD / NIST
Published: 2018-07-26T15:29:00.357+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.76%

Last modified Jun 17, 2026

CVE-2017-7558 is a vulnerability of currently unknown severity. 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. EPSS estimates a 3.76% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

3.76%

88.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	>= 4.7, <= 4.13	—
Linux	Linux Kernel	4.7	Rc1
Debian	Debian Linux	8.0	—
Debian	Debian Linux	9.0	—

References

http://seclists.org/oss-sec/2017/q3/338Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/100466Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039221Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2918Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2930Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2931Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7558Issue Tracking, Third Party Advisory
https://marc.info/?l=linux-netdev&m=150348777122761&w=2Patch, Third Party Advisory
https://www.debian.org/security/2017/dsa-3981Third Party Advisory
http://seclists.org/oss-sec/2017/q3/338Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/100466Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039221Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2918Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2930Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2931Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7558Issue Tracking, Third Party Advisory
https://marc.info/?l=linux-netdev&m=150348777122761&w=2Patch, Third Party Advisory
https://www.debian.org/security/2017/dsa-3981Third Party Advisory

Timeline

Published: Jul 26, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7558?

How severe is CVE-2017-7558?

Severity scoring for CVE-2017-7558 is pending analysis. The EPSS model estimates a 3.76% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7558?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-7558?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST