CVE-2021-34693

Published: Jun 14, 2021Modified: Jun 17, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitability: 1.8 / Impact: 3.6

Source: NVD

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.

Affected (3)

Products: Linux: Linux Kernel · Debian: Debian Linux

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	From 2.6.25 to 5.12.10

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 10.0
Debian Debian Linux	Version 9.0

Related CWEs

CWE-909

Missing Initialization of Resource

The product does not initialize a critical resource.

References (14)

http://www.openwall.com/lists/oss-security/2021/06/15/1

Source: cve@mitre.org

ExploitMailing ListPatchThird Party Advisory

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5e87ddbe3942e27e939bdc02deb8579b0cbd8ecc

Source: cve@mitre.org

https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://lore.kernel.org/netdev/trinity-87eaea25-2a7d-4aa9-92a5-269b822e5d95-1623609211076%403c-app-gmx-bs04/T/

Source: cve@mitre.org

https://www.debian.org/security/2021/dsa-4941

Source: cve@mitre.org

Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/06/15/1