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.

References

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

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

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

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

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

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

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

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3