Vulnerability Description
The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.28, < 3.2.97 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1137b5PatchTechnical Description
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.htmlMailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2017/Nov/40Mailing ListThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11PatchVendor Advisory
- http://www.securityfocus.com/bid/101954Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1318Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1355Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1170Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1190Third Party Advisory
- https://blogs.securiteam.com/index.php/archives/3535ExploitPatchThird Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1069702Issue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/1137b5e2529a8f5ca8ee709288ecba3e68044dfPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.htmlThird Party Advisory
- https://www.debian.org/security/2018/dsa-4082Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1137b5PatchTechnical Description
FAQ
What is CVE-2017-16939?
CVE-2017-16939 is a vulnerability with a CVSS score of 7.8 (HIGH). The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVB...
How severe is CVE-2017-16939?
CVE-2017-16939 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-16939?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.