Double Free in Linux Kernel
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
- alexzorin/cve-2017-2636-el
- ARPSyndicate/cvemon
- R0B1NL1N/linux-kernel-exploitation
- Technoashofficial/kernel-exploitation-linux
- integeruser/on-pwning
- kdn111/linux-kernel-exploitation
- khanhdn111/linux-kernel-exploitation
- khanhdz-06/linux-kernel-exploitation
- khanhdz191/linux-kernel-exploitation
- khanhhdz/linux-kernel-exploitation
References
- access.redhat.com/errata/RHSA-2017:0892 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/96732 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1037963 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:0932 (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2017/03/07/6 (mailing-list, Patch, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Mitigation, Issue Tracking)
- a13xp0p0v.github.io/2017/03/24/CVE-2017-2636.html (Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:1125 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:0933 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:1232 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-2636?
- CVE-2017-2636 is a high-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2017-03-07.
- How severe is CVE-2017-2636?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2017-2636 known to be exploited?
- 27 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.