Severity
4.4MEDIUMNVD
OSV7.8OSV7.5OSV6.7
EPSS
0.1%
top 76.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedApr 2
Latest updateMay 24

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 vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NExploitability: 0.8 | Impact: 3.6

Affected Packages4 packages

Debianlinux/linux_kernel< 5.5.17-1+3
Ubuntulinux/linux_kernel< 4.4.0-179.209+8
NVDlinux/linux_kernel3.165.6.2
NVDopensuse/leap15.1

Also affects: Debian Linux 8.0, 9.0, Ubuntu Linux 14.04, 16.04, 18.04, 19.10

Patches

🔴Vulnerability Details

11
GHSA
GHSA-64rp-89cr-p8q9: An issue was discovered in slc_bump in drivers/net/can/slcan2022-05-24
OSV
Kernel Live Patch Security Notice2020-10-14
OSV
Kernel Live Patch Security Notice2020-06-09
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities2020-05-28
OSV
linux, linux-raspi2, linux-raspi2-5.3 regression2020-05-28

📋Vendor Advisories

11
Ubuntu
Kernel Live Patch Security Notice2020-10-14
Ubuntu
Kernel Live Patch Security Notice2020-06-09
Ubuntu
Linux kernel regression2020-05-28
Ubuntu
Linux kernel vulnerabilities2020-05-28
Ubuntu
Linux kernel vulnerabilities2020-05-24

💬Community

2
Bugzilla
CVE-2020-11494 kernel: transmission of uninitialized data allows attackers to read sensitive information [fedora-all]2020-04-20
Bugzilla
CVE-2020-11494 kernel: transmission of uninitialized data allows attackers to read sensitive information2020-04-20
CVE-2020-11494 — Use of Uninitialized Resource | cvebase