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CVE-2019-19947

18
FAUCET Score

CVE-2019-19947 is an information leak vulnerability in the Linux kernel through version 5.4.6, specifically within the kvaser_usb_leaf.c driver for Kvaser USB devices, affecting Canonical, Debian, Linux, and NetApp products. Rated Medium (CVSS 4.6), this vulnerability allows an attacker with physical access to a USB device to potentially extract uninitialized memory, leading to a high confidentiality impact without requiring user interaction. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.4.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.6MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
0.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 77th percentile among its peer group of 1,532 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2019-19947Moderate

kernel: uninitialized memory allocation in drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c leading to information leak

Jan 6, 2020

References

github.com / torvalds/linux/commit/da2311a6385c3b499da2ed5d9be59ce331fa93e9
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2020/01/msg00013.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2020/03/msg00001.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20200204-0002
Third Party Advisory
usn.ubuntu.com / 4284-1
Third Party Advisory
usn.ubuntu.com / 4285-1
Third Party Advisory
usn.ubuntu.com / 4427-1
Third Party Advisory
usn.ubuntu.com / 4485-1
Third Party Advisory
openwall.com / lists/oss-security/2019/12/24/1
Mailing ListThird Party Advisory