CVE-2020-11494 Information

Description

An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 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:N

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html https://github.com/torvalds/linux/commit/b9258a2cece4ec1f020715fe3554bc2e360f6264 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://security.netapp.com/advisory/ntap-20200430-0004/ https://usn.ubuntu.com/4363-1/ https://usn.ubuntu.com/4364-1/ https://usn.ubuntu.com/4368-1/ https://usn.ubuntu.com/4369-1/ https://www.debian.org/security/2020/dsa-4698

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

4.4