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CVE-2016-2383

Date: April 27, 2016

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.

Language: C

Severity Score

Related Resources (11)

http://www.ubuntu.com/usn/USN-2947-3
http://www.openwall.com/lists/oss-security/2016/02/14/1
https://nvd.nist.gov/vuln/detail/CVE-2016-2383
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-2383
https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492
https://bugzilla.redhat.com/show_bug.cgi?id=1308452
http://www.ubuntu.com/usn/USN-2947-2
http://www.ubuntu.com/usn/USN-2947-1
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492
https://www.mend.io/vulnerability-database/CVE-2016-2383

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

Insufficient Information

NVD-CWE-noinfo

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): NONE
Availability (A): NONE

CVSS v2

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

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