CVE-2018-19985

The function hso_get_config_data in drivers/net/usb/hso.c in the Linux kernel through 4.19.8 reads if_num from the USB device (as a u8) and uses it to index a small array, resulting in an object out-of-bounds (OOB) read that potentially allows arbitrary read in the kernel address space.

Published: 2019-03-21 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-19985 is rated Low Risk (22.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.04%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-19985

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.12% 0.04% -0.07%
2 2025-11-18 0.02% 0.12% +0.09%
3 2025-03-30 — 0.02% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-19985

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 3.0 MEDIUM
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:P)
Hands-on access—USB, keyboard, opening the case—not something you do purely over the wire.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 0.9 3.6 [email protected]
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2018-19985

OS Trackers for CVE-2018-19985

vendor priority summary link
debian not yet assigned CVE-2018-19985 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-19985
redhat low — https://access.redhat.com/security/cve/CVE-2018-19985
suse medium CVE-2018-19985 severity moderate: SUSE including 314 source package names (bpftool-3.10.0-1127.el7, bpftool-4.18.0-147.el8, …), 539 product×package rows across 78 product lines (SUSE CaaS Platform 3.0, SUSE CaaS Platform 4.0, … (78 product lines)): Fixed 490, Known Not Affected 49. https://www.suse.com/security/cve/CVE-2018-19985/
ubuntu low CVE-2018-19985 low priority: Ubuntu including 118 source packages (linux, linux-aws, …), 1187 status rows across 13 suites (bionic, cosmic, disco, eoan, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 840, not-affected 176, released 151, ignored 20. https://ubuntu.com/security/CVE-2018-19985

Affected software / configurations for CVE-2018-19985

Vendor Product Version Raw CPE
linux linux_kernel <= 4.19.8 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
netapp active_iq_performance_analytics_services — cpe:2.3:a:netapp:active_iq_performance_analytics_services:-:*:*:*:*:*:*:*
netapp element_software_management_node — cpe:2.3:a:netapp:element_software_management_node:-:*:*:*:*:*:*:*

References for CVE-2018-19985

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-01/msg00023.html Mailing List Patch Release Notes Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00007.html Mailing List Patch Release Notes Third Party Advisory
http://packetstormsecurity.com/files/151420/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Release Notes Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2019:3309
https://access.redhat.com/errata/RHSA-2019:3517
https://hexhive.epfl.ch/projects/perifuzz/ Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html Mailing List Third Party Advisory
https://seclists.org/bugtraq/2019/Jan/52 Mailing List Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20190404-0002/ Third Party Advisory
https://usn.ubuntu.com/4115-1/
https://usn.ubuntu.com/4118-1/
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