CVE-2017-7558
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.76%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 3.76% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel · debian/debian linux
- Source
- secalert@redhat.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.