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.
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7558
http://seclists.org/oss-sec/2017/q3/338
https://marc.info/?l=linux-netdev&m=150348777122761&w=2
https://www.debian.org/security/2017/dsa-3981
https://access.redhat.com/errata/RHSA-2017:2931
https://access.redhat.com/errata/RHSA-2017:2930
https://access.redhat.com/errata/RHSA-2017:2918
http://www.securitytracker.com/id/1039221
http://www.securityfocus.com/bid/100466
Source: MITRE
Published: 2018-07-26
Updated: 2023-02-02
Type: CWE-125
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH