CVE-2019-19947: canonical ubuntu_linux Use of Uninitialized Resource
Vulnerability summary
CVE-2019-19947 is a medium (CVSS 4.6) Use of Uninitialized Resource vulnerability in canonical ubuntu_linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 42.3% of scored vulnerabilities.
Not severe (CVSS 4.6, physical access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 4Timeline
- 23-12-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated4.6MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated4.6MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.49%
Chance of exploitation in the next 30 days
Percentile
42%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.49% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: physical access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu36 products
- linuxAll versions (No fix recorded) | < 4.4.0-186.216 | < 4.15.0-115.116
- linux-aws< 4.4.0-1075.79 | < 4.4.0-1111.123 | < 4.15.0-1080.84
- linux-aws-5.0< 5.0.0-1025.28
- linux-aws-fips< 4.15.0-2025.25 | All versions (No fix recorded)
- linux-aws-hwe< 4.15.0-1080.84~16.04.1
Netapp10 products
- active_iq_unified_managerna
- aff_baseboard_management_controllera700s
- cloud_backupna
- data_availability_servicesna
- e-series_santricity_os_controller≥ 11.0, ≤ 11.70.2
Debian2 products
- linux< 5.4.8-1
- debian_linuxEOL8.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 19.10
Linux1 product
- linux_kernel≤ 5.4.6
5 vendors · 50 products
References
17 links- github.com/torvalds/linux/commit/da2311a6385c3b499da2ed5d9be59ce331fa93e9X Refsource MISCREPORTPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2019/12/24/1Mailing ListX Refsource MLISTREPORTThird Party Advisory
lists.debian.org/debian-lts-announce/2020/01/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing ListX Refsource MLISTThird Party Advisory