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CVE-2016-7916

Date: November 15, 2016

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.

Language: C

Severity Score

Related Resources (13)

https://forums.grsecurity.net/viewtopic.php?f=3&t=4363
http://www.ubuntu.com/usn/USN-3159-2
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8148a73c9901a8794a50f950083c00ccf97d43b3
https://access.redhat.com/security/cve/CVE-2016-7916
http://www.ubuntu.com/usn/USN-3159-1
http://source.android.com/security/bulletin/2016-11-01.html
https://bugzilla.kernel.org/show_bug.cgi?id=116461
http://www.securityfocus.com/bid/94138
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-7916
https://github.com/torvalds/linux/commit/8148a73c9901a8794a50f950083c00ccf97d43b3
https://nvd.nist.gov/vuln/detail/CVE-2016-7916
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4
https://www.mend.io/vulnerability-database/CVE-2016-7916

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): NONE
Availability (A): NONE
Additional information:

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