UBUNTU-CVE-2020-11494

Advisory lineage Upstream: 1 Downstream: 7
Upstream
CVE-2020-11494
Published: 02 Apr 2020, 21:15
Last modified:03 Jun 2026, 13:34

Vulnerability Summary

Overall Risk (default)
low
18/100
CVSS Score
4.4 MEDIUM
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Apr 2020, 21:15
Published
Vulnerability first disclosed
03 Jun 2026, 13:34
Last Modified
Vulnerability information updated

Description

An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL, aka CID-b9258a2cece4.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected Systems

  • ubuntu•linux

    all | < 4.4.0-179.209 | < 4.15.0-101.102

  • ubuntu•linux-aws

    < 4.4.0-1067.71 | < 4.4.0-1107.118 | < 4.15.0-1067.71

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.3

    < 5.3.0-1019.21~18.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1067.71~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1083.93~14.04.1 | < 4.15.0-1083.93~16.04.1 | all

  • ubuntu•linux-azure-4.15

    < 4.15.0-1083.93

  • ubuntu•linux-azure-5.3

    < 5.3.0-1022.23~18.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2006.7 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    < 4.4.0-1034.39 | all | < 4.15.0-1029.34

  • ubuntu•linux-gcp

    < 4.15.0-1071.81~16.04.1 | all

  • ubuntu•linux-gcp-5.3

    < 5.3.0-1020.22~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1059.62

  • ubuntu•linux-gke-5.0

    < 5.0.0-1037.38

  • ubuntu•linux-gke-5.3

    < 5.3.0-1020.22~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-101.102~16.04.1 | < 5.3.0-53.47~18.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1071.78 | < 4.15.0-1060.61

  • ubuntu•linux-lts-xenial

    < 4.4.0-179.209~14.04.1

  • ubuntu•linux-nvidia

    all

  • ubuntu•linux-oem

    < 4.15.0-1081.91

  • ubuntu•linux-oem-5.6

    < 5.6.0-1008.8

  • ubuntu•linux-oem-osp1

    < 5.0.0-1052.57

  • ubuntu•linux-oracle

    < 4.15.0-1039.43~16.04.1 | < 4.15.0-1039.43

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.3

    < 5.3.0-1018.20~18.04.1

  • ubuntu•linux-raspi

    < 5.4.0-1011.11

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1133.142 | < 4.15.0-1062.66 | all

  • ubuntu•linux-raspi2-5.3

    < 5.3.0-1026.28~18.04.1

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-snapdragon

    < 4.4.0-1137.145 | < 4.15.0-1079.86

References (10)