Vulnerability Details : CVE-2016-7916
Race condition in the environ_read function in fs/proc/base.c in the Linux kernel before 4.5.4 allows local users to obtain sensitive information from kernel memory by reading a /proc/*/environ file during a process-setup time interval in which environment-variable copying is incomplete.
Published
2016-11-16 05:59:11
Updated
2025-04-12 10:46:41
Products affected by CVE-2016-7916
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-7916
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 14 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-7916
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.7
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:N/A:N |
3.4
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2016-7916
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-7916
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8148a73c9901a8794a50f950083c00ccf97d43b3
kernel/git/torvalds/linux.git - Linux kernel source treeIssue Tracking;Patch;Third Party Advisory
-
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4
Release Notes;Vendor Advisory
-
http://www.securityfocus.com/bid/94138
Linux Kernel Multiple Information Disclosure VulnerabilitiesThird Party Advisory;VDB Entry
-
https://github.com/torvalds/linux/commit/8148a73c9901a8794a50f950083c00ccf97d43b3
proc: prevent accessing /proc/<PID>/environ until it's ready · torvalds/linux@8148a73 · GitHubIssue Tracking;Patch;Third Party Advisory
-
https://bugzilla.kernel.org/show_bug.cgi?id=116461
116461 – PAX: size overflow in function environ_read fs/proc/base.cIssue Tracking
-
http://source.android.com/security/bulletin/2016-11-01.html
Android Security Bulletin—November 2016 | Android Open Source ProjectThird Party Advisory
-
http://www.ubuntu.com/usn/USN-3159-1
USN-3159-1: Linux kernel vulnerability | Ubuntu security notices
-
https://forums.grsecurity.net/viewtopic.php?f=3&t=4363
grsecurity forums • View topic - PAX: size overflow in function environ_read fs/proc/base.cIssue Tracking
-
http://www.ubuntu.com/usn/USN-3159-2
USN-3159-2: Linux kernel (OMAP4) vulnerability | Ubuntu security notices
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