CVEvulnerability

CVE-2016-2383

5.5 MEDIUM Published 2016-04-27 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2016-04-27
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N

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.

Affected configurations

• linux linux kernel (< 4.5.0) • linux linux kernel 4.5.0 • canonical ubuntu linux 14.04 • canonical ubuntu linux 15.10 • opensuse leap 42.1

References