CVE-2021-34693 — Missing Initialization of Resource in Linux

CWE-909 — Missing Initialization of ResourceCWE-908 — Use of Uninitialized Resource21 documents8 sources
Severity
5.5MEDIUMNVD
OSV7.8OSV6.5OSV5.4
EPSS
0.1%
top 83.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Linux KernelDebian LinuxDebian Linux+2 more
Timeline
PublishedJun 14
Latest updateMay 24

Description

net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitability: 1.8 | Impact: 3.6

Affected Packages6 packages

▶Debianlinux/linux_kernel< 5.10.46-1+3
▶Ubuntulinux/linux_kernel< 4.15.0-156.163+3
▶NVDlinux/linux_kernel2.6.25 — 5.12.10

Also affects: Debian Linux 10.0, 9.0

Patches

Patch: www.openwall.com ↗Patch: www.openwall.com ↗

🔴Vulnerability Details

9
GHSA
GHSA-c44h-4g88-mw48: net/can/bcm↗2022-05-24
▶
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-03-22
▶
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities↗2022-02-22
▶
OSV
linux-raspi2 vulnerabilities↗2021-09-22
▶
OSV
linux-gcp, linux-gcp-4.15 vulnerabilities↗2021-09-17
▶

📋Vendor Advisories

10
Ubuntu
Linux kernel vulnerabilities↗2022-03-22
▶
Ubuntu
Linux kernel vulnerabilities↗2022-02-22
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2021-09-22
▶
Ubuntu
Linux kernel (GCP) vulnerabilities↗2021-09-17
▶
Ubuntu
Linux kernel vulnerabilities↗2021-09-09
▶

💬Community

1
Bugzilla
CVE-2021-34693 kernel: allows local users to obtain sensitive information from stack memory because of uninitialized data structure in net/can/bcm.c↗2021-06-15
▶
CVE-2021-34693 — Missing Initialization of Resource | cvebase