CVE-2016-2383

medium
New! CVE Severity Now Using CVSS v3

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Description

The adjust_branches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case, which allows local users to obtain sensitive information from kernel memory by creating a packet filter and then loading crafted BPF instructions.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492

http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html

http://www.openwall.com/lists/oss-security/2016/02/14/1

http://www.ubuntu.com/usn/USN-2947-1

http://www.ubuntu.com/usn/USN-2947-2

http://www.ubuntu.com/usn/USN-2947-3

https://bugzilla.redhat.com/show_bug.cgi?id=1308452

https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492

Details

Source: MITRE

Published: 2016-04-27

Updated: 2016-12-03

Type: CWE-200

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:rc7:*:*:*:*:*:* versions up to 4.5.0 (inclusive)

Tenable Plugins

View all (9 total)

IDNameProductFamilySeverity
124796EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1472)NessusHuawei Local Security Checks
high
90482openSUSE Security Update : the Linux Kernel (openSUSE-2016-445)NessusSuSE Local Security Checks
critical
90404Ubuntu 15.10 : linux-raspi2 vulnerabilities (USN-2947-3)NessusUbuntu Local Security Checks
critical
90403Ubuntu 14.04 LTS : linux-lts-wily vulnerabilities (USN-2947-2)NessusUbuntu Local Security Checks
critical
90402Ubuntu 15.10 : linux vulnerabilities (USN-2947-1)NessusUbuntu Local Security Checks
critical
89966Amazon Linux AMI : kernel (ALAS-2016-669)NessusAmazon Linux Local Security Checks
high
89702Fedora 22 : kernel-4.4.3-201.fc22 (2016-9fbe2c258b)NessusFedora Local Security Checks
critical
89632Fedora 22 : kernel-4.3.6-201.fc22 (2016-e7162262b0)NessusFedora Local Security Checks
critical
89570Fedora 23 : kernel-4.4.2-301.fc23 (2016-7e12ae5359)NessusFedora Local Security Checks
critical