Race condition in Linux kernel - CVE-2017-2636
Published: March 8, 2017 / Updated: February 24, 2023
Vulnerability identifier: #VU92796
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-2636
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to execute arbitrary code.
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 to mitigate CVE-2017-2636
Install update from vendor's repository.
Sources
- https://bugzilla.redhat.com/show_bug.cgi?id=1428319
- http://www.openwall.com/lists/oss-security/2017/03/07/6
- http://www.securityfocus.com/bid/96732
- https://a13xp0p0v.github.io/2017/03/24/CVE-2017-2636.html
- http://www.securitytracker.com/id/1037963
- http://www.debian.org/security/2017/dsa-3804
- https://access.redhat.com/errata/RHSA-2017:1488
- https://access.redhat.com/errata/RHSA-2017:1233
- https://access.redhat.com/errata/RHSA-2017:1232
- https://access.redhat.com/errata/RHSA-2017:1126
- https://access.redhat.com/errata/RHSA-2017:1125
- https://access.redhat.com/errata/RHSA-2017:0986
- https://access.redhat.com/errata/RHSA-2017:0933
- https://access.redhat.com/errata/RHSA-2017:0932
- https://access.redhat.com/errata/RHSA-2017:0931
- https://access.redhat.com/errata/RHSA-2017:0892