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CVE-2016-9754

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Date: January 5, 2017

The ring_buffer_resize function in kernel/trace/ring_buffer.c in the profiling subsystem in the Linux kernel before 4.6.1 mishandles certain integer calculations, which allows local users to gain privileges by writing to the /sys/kernel/debug/tracing/buffer_size_kb file.

Language: C

Severity Score

Related Resources (9)

http://www.securityfocus.com/bid/95278
https://security-tracker.debian.org/tracker/CVE-2016-9754
https://source.android.com/security/bulletin/2017-01-01.html
https://nvd.nist.gov/vuln/detail/CVE-2016-9754
https://github.com/torvalds/linux/commit/59643d1535eb220668692a5359de22545af579f6
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59643d1535eb220668692a5359de22545af579f6
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-9754
https://www.mend.io/vulnerability-database/CVE-2016-9754

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

CVSS v3.1

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

CVSS v2

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

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