Vulnerability Details : CVE-2016-7042
The proc_keys_show function in security/keys/proc.c in the Linux kernel through 4.8.2, when the GNU Compiler Collection (gcc) stack protector is enabled, uses an incorrect buffer size for certain timeout data, which allows local users to cause a denial of service (stack memory corruption and panic) by reading the /proc/keys file.
Vulnerability category: OverflowMemory CorruptionDenial of service
Products affected by CVE-2016-7042
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-7042
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-7042
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST | |
|
6.2
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.5
|
3.6
|
NIST |
CWE ids for CVE-2016-7042
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-7042
-
https://source.android.com/security/bulletin/2017-01-01.html
Android Security Bulletin—January 2017 | Android Open Source Project
-
http://www.openwall.com/lists/oss-security/2016/10/13/5
oss-security - kernel: Stack corruption while reading /proc/keys (CVE-2016-7042)Mailing List
-
http://rhn.redhat.com/errata/RHSA-2017-0817.html
RHSA-2017:0817 - Security Advisory - Red Hat Customer Portal
-
https://access.redhat.com/errata/RHSA-2017:1842
RHSA-2017:1842 - Security Advisory - Red Hat Customer Portal
-
https://access.redhat.com/errata/RHSA-2017:2077
RHSA-2017:2077 - Security Advisory - Red Hat Customer Portal
-
http://www.securityfocus.com/bid/93544
Linux Kernel CVE-2016-7042 Local Denial of Service Vulnerability
-
https://bugzilla.redhat.com/show_bug.cgi?id=1373966
1373966 – (CVE-2016-7042) CVE-2016-7042 kernel: Stack corruption while reading /proc/keys when gcc stack protector is enabledIssue Tracking;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2017:2669
RHSA-2017:2669 - Security Advisory - Red Hat Customer Portal
Jump to