CVE-2016-2085

MEDIUM

Linux kernel <4.5 - Info Disclosure

Title source: llm

Description

The evm_verify_hmac function in security/integrity/evm/evm_main.c in the Linux kernel before 4.5 does not properly copy data, which makes it easier for local users to forge MAC values via a timing side-channel attack.

References (13)

[Vendor Advisory] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=613317bd212c585c20796c10afe5daaa95d4b0a1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2946-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2946-2

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2947-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2947-2

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2947-3

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2948-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2948-2

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2949-1

[Issue Tracking] https://bugzilla.redhat.com/show_bug.cgi?id=1324867

[Patch, Vendor Advisory] https://github.com/torvalds/linux/commit/613317bd212c585c20796c10afe5daaa95d4b0a1

[Various Sources] https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2085.html

[Third Party Advisory] https://security-tracker.debian.org/tracker/CVE-2016-2085

Scores

CVSS v3 5.5

EPSS 0.0007

EPSS Percentile 21.7%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Classification

CWE

CWE-19

Status draft

Affected Products (1)

linux/linux_kernel < 4.4.8

Timeline

Published Apr 27, 2016

Tracked Since Feb 18, 2026