VulnerabilityModified
CVE-2016-2383
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…
MEDIUM 5.5EPSS 0.37%
Does this matter?
Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.37% probability · 31th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel · canonical/ubuntu linux · opensuse/leap
- Source
- security@debian.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/14/1Mailing List, Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-3Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1308452Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492Patch, Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/14/1Mailing List, Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-3Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1308452Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.