CVEvulnerability
CVE-2017-18509
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2019-08-13
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-20
Description
An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land and cause an inet_csk_listen_stop general protection fault, or potentially execute arbitrary code under certain circumstances. The issue can be triggered as root (e.g., inside a default LXC container or with the CAP_NET_ADMIN capability) or after namespace unsharing. This occurs because sk_type and protocol are not checked in the appropriate part of the ip6_mroute_* functions. NOTE: this affects Linux distributions that use 4.9.x longterm kernels before 4.9.187.
Affected configurations
• linux linux kernel (< 3.16.72)
• linux linux kernel (>= 3.17 < 4.4.187)
• linux linux kernel (>= 4.5 < 4.9.187)
• linux linux kernel (>= 4.10 < 4.11)
• canonical ubuntu linux 16.04
• debian debian linux 8.0
• debian debian linux 9.0
• debian debian linux 10.0
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Third Party Advisory, VDB Entry
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99253eb750fda6a644d5188fb26c43bad8d5a745 Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/99253eb750fda6a644d5188fb26c43bad8d5a745 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html Mailing List, Third Party Advisory
- https://lists.openwall.net/netdev/2017/12/04/40 Mailing List, Third Party Advisory
- https://pulsesecurity.co.nz/advisories/linux-kernel-4.9-inetcsklistenstop-gpf Exploit, Third Party Advisory
- https://salsa.debian.org/kernel-team/linux/commit/baefcdc2f29923e7325ce4e1a72c3ff0a9800f32 Third Party Advisory
- https://seclists.org/bugtraq/2019/Aug/26 Mailing List, Third Party Advisory
- https://support.f5.com/csp/article/K41582535 Third Party Advisory
- https://support.f5.com/csp/article/K41582535?utm_source=f5support&%3Butm_medium=RSS support.f5.com
- https://usn.ubuntu.com/4145-1/ Third Party Advisory
- https://www.debian.org/security/2019/dsa-4497 Third Party Advisory
- http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Third Party Advisory, VDB Entry
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99253eb750fda6a644d5188fb26c43bad8d5a745 Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/99253eb750fda6a644d5188fb26c43bad8d5a745 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html Mailing List, Third Party Advisory
- https://lists.openwall.net/netdev/2017/12/04/40 Mailing List, Third Party Advisory
- https://pulsesecurity.co.nz/advisories/linux-kernel-4.9-inetcsklistenstop-gpf Exploit, Third Party Advisory
- https://salsa.debian.org/kernel-team/linux/commit/baefcdc2f29923e7325ce4e1a72c3ff0a9800f32 Third Party Advisory
- https://seclists.org/bugtraq/2019/Aug/26 Mailing List, Third Party Advisory
- https://support.f5.com/csp/article/K41582535 Third Party Advisory
- https://support.f5.com/csp/article/K41582535?utm_source=f5support&%3Butm_medium=RSS support.f5.com
- https://usn.ubuntu.com/4145-1/ Third Party Advisory
- https://www.debian.org/security/2019/dsa-4497 Third Party Advisory