CVE-2017-2636
HIGHCVSS 7/10EPSS 1.03%
Last modified
CVE-2017-2636 is a high-severity vulnerability rated 7/10 on the CVSS scale. Race condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.
Description
Race condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.31, < 3.2.87 |
| Linux | Linux Kernel | >= 3.3, < 3.10.106 |
| Linux | Linux Kernel | >= 3.11, < 3.12.72 |
| Linux | Linux Kernel | >= 3.13, < 3.16.42 |
| Linux | Linux Kernel | >= 3.17, < 3.18.49 |
| Linux | Linux Kernel | >= 3.19, < 4.1.49 |
| Linux | Linux Kernel | >= 4.2, < 4.4.54 |
| Linux | Linux Kernel | >= 4.5, < 4.9.15 |
| Linux | Linux Kernel | >= 4.10, < 4.10.3 |
| Debian | Debian Linux | 8.0 |
References
- http://www.debian.org/security/2017/dsa-3804Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/03/07/6Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/96732Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037963Third Party Advisory, VDB Entry
- https://a13xp0p0v.github.io/2017/03/24/CVE-2017-2636.htmlThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0892Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0931Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0932Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0933Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0986Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1125Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1126Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1232Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1233Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1488Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1428319Issue Tracking, Mitigation, Third Party Advisory
- http://www.debian.org/security/2017/dsa-3804Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/03/07/6Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/96732Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037963Third Party Advisory, VDB Entry
- https://a13xp0p0v.github.io/2017/03/24/CVE-2017-2636.htmlThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0892Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0931Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0932Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0933Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0986Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1125Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1126Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1232Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1233Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1488Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1428319Issue Tracking, Mitigation, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-2636?
Race condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline.
How severe is CVE-2017-2636?
CVE-2017-2636 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.
How do I fix CVE-2017-2636?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2017-2636?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST