Description

The tcp_disconnect function in net/ipv4/tcp.c in the Linux kernel before 4.12 allows local users to cause a denial of service (__tcp_select_window divide-by-zero error and system crash) by triggering a disconnect within a certain tcp_recvmsg code path.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=499350a5a6e7512d9ed369ed63a4244b6536f4f8

http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html

http://www.debian.org/security/2017/dsa-3981

http://www.securityfocus.com/bid/100878

http://www.securitytracker.com/id/1039549

https://access.redhat.com/errata/RHSA-2017:2918

https://access.redhat.com/errata/RHSA-2017:2930

https://access.redhat.com/errata/RHSA-2017:2931

https://access.redhat.com/errata/RHSA-2017:3200

https://access.redhat.com/errata/RHSA-2018:2172

https://github.com/torvalds/linux/commit/499350a5a6e7512d9ed369ed63a4244b6536f4f8

https://www.mail-archive.com/[email protected]/msg186255.html

Details

Risk Information

CVSS v2

CVSS v3