MEDIUM
CVE-2019-19947
CWE-908Published: December 24, 2019· Updated: Jun 17, 2026
4.6
CVSS v3.1
Official Description
In the Linux kernel through 5.4.6, there are information leaks of uninitialized memory to a USB device in the drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c driver, aka CID-da2311a6385c.
Technical Analysis
CVE-2019-19947 requires local access, meaning attackers must already have a foothold on the target system.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 4.6.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Vendors & Products
Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Linux1 product(s)
linux kernel
netapp10 product(s)
active iq unified managercloud backupdata availability servicese-series santricity os controllerfas\/aff baseboard management controllerhci baseboard management controllersolidfire \& hci management nodesteelstore cloud integrated storageaff baseboard management controllersolidfire baseboard management controller
Source: NVD CPE · 16 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
ADVISORYhttps://usn.ubuntu.com/4284-1/
ADVISORYhttps://usn.ubuntu.com/4285-1/
ADVISORYhttps://usn.ubuntu.com/4427-1/
ADVISORYhttps://usn.ubuntu.com/4485-1/
ADVISORYhttps://usn.ubuntu.com/4284-1/
ADVISORYhttps://usn.ubuntu.com/4285-1/
ADVISORYhttps://usn.ubuntu.com/4427-1/
ADVISORYhttps://usn.ubuntu.com/4485-1/
All References (18)
→
http://www.openwall.com/lists/oss-security/2019/12/24/1Mailing List · Third Party Advisory
→
https://github.com/torvalds/linux/commit/da2311a6385c3b499da2ed5d9be59ce331fa93e9Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
→
https://usn.ubuntu.com/4284-1/Third Party Advisory
→
https://usn.ubuntu.com/4285-1/Third Party Advisory
→
https://usn.ubuntu.com/4427-1/Third Party Advisory
→
https://usn.ubuntu.com/4485-1/Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2019/12/24/1Mailing List · Third Party Advisory
→
https://github.com/torvalds/linux/commit/da2311a6385c3b499da2ed5d9be59ce331fa93e9Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
→
https://usn.ubuntu.com/4284-1/Third Party Advisory
Quick Facts
CVE IDCVE-2019-19947
CVSS Score4.6 / 10
SeverityMEDIUM
WeaknessCWE-908
CISA KEVNo
Affected4 vendor(s)
PublishedDec 24, 2019
Related CVEs (CWE-908)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-19947 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.