CVE-2016-2383

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.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.08%

Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492	third party advisory patch
http://www.ubuntu.com/usn/USN-2947-3	third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2947-2	third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2947-1	third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2016/02/14/1	third party advisory mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=1308452	issue tracking third party advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492	patch vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html	third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-2383?: CVE-2016-2383 has been scored as a medium severity vulnerability.
How to fix CVE-2016-2383?: To fix CVE-2016-2383, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-2383 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2016-2383 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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