Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.7, <= 4.13 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://seclists.org/oss-sec/2017/q3/338Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/100466Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039221Third Party AdvisoryVDB 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 TrackingThird Party Advisory
- https://marc.info/?l=linux-netdev&m=150348777122761&w=2PatchThird Party Advisory
- https://www.debian.org/security/2017/dsa-3981Third Party Advisory
- http://seclists.org/oss-sec/2017/q3/338Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/100466Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039221Third Party AdvisoryVDB 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
FAQ
What is CVE-2017-7558?
CVE-2017-7558 is a vulnerability with a CVSS score of 5.1 (MEDIUM). 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....
How severe is CVE-2017-7558?
CVE-2017-7558 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7558?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.