CVE-2017-16939 EXPLOIT
7.8
HIGH · CVSS 3.1 · EPSS 2.2% (pctl 82)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 2.15% — more likely to be exploited than 82% of all CVEs |
| Weakness | CWE-416 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2017-11-24 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| debian | debian linux |
| linux | linux kernel |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Linux Kernel (Ubuntu 17.04) - 'XFRM' Local Privilege Escalation | 2017-11-23 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1137b5e2529a8f5ca8ee709288ecba3e68044df2
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
- http://seclists.org/fulldisclosure/2017/Nov/40
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
- http://www.securityfocus.com/bid/101954
- https://access.redhat.com/errata/RHSA-2018:1318
- https://access.redhat.com/errata/RHSA-2018:1355
- https://access.redhat.com/errata/RHSA-2019:1170
- https://access.redhat.com/errata/RHSA-2019:1190
- https://blogs.securiteam.com/index.php/archives/3535
- https://bugzilla.suse.com/show_bug.cgi?id=1069702
- https://github.com/torvalds/linux/commit/1137b5e2529a8f5ca8ee709288ecba3e68044df2
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
- https://www.debian.org/security/2018/dsa-4082
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1137b5e2529a8f5ca8ee709288ecba3e68044df2
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
- http://seclists.org/fulldisclosure/2017/Nov/40
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
- http://www.securityfocus.com/bid/101954
- https://access.redhat.com/errata/RHSA-2018:1318
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