CVE-2016-2383
Summary
| CVE | CVE-2016-2383 |
|---|---|
| State | PUBLISHED |
| Assigner | debian |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-04-27 17:59:10 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Problem Types: NVD-CWE-noinfo | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| 2.0 | [email protected] | Primary | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
NoneAvailability
NoneAV:L/AC:L/Au:N/C:P/I:N/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Canonical | Ubuntu Linux | 14.04 | All | All | All |
| Operating System | Canonical | Ubuntu Linux | 15.10 | All | All | All |
| Operating System | Linux | Linux Kernel | All | All | All | All |
| Operating System | Linux | Linux Kernel | 4.5.0 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 4.5.0 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 4.5.0 | rc3 | All | All |
| Operating System | Opensuse | Leap | 42.1 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| USN-2947-2: Linux kernel (Wily HWE) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| oss-security - CVE Request: Linux: Incorrect branch fixups for eBPF allow arbitrary read | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| Bug 1308452 – CVE-2016-2383 kernel: incorrect branch fixups for eBPG allow arbitrary read | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Issue Tracking, Third Party Advisory |
| USN-2947-1: Linux kernel vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| USN-2947-3: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| [security-announce] openSUSE-SU-2016:1008-1: important: Security update | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Third Party Advisory |
| bpf: fix branch offset adjustment on backjumps after patching ctx exp… · torvalds/linux@a1b14d2 · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Patch, Third Party Advisory |
| kernel/git/torvalds/linux.git - Linux kernel source tree | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Patch, Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.