Rapid7 Vulnerability & Exploit Database

Debian: CVE-2020-27171: linux, linux-4.19 -- security update

Back to Search

Debian: CVE-2020-27171: linux, linux-4.19 -- security update

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:P)
Published
03/20/2021
Created
04/01/2021
Added
03/31/2021
Modified
04/08/2021

Description

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-10d2bb2e6b1d.

Solution(s)

  • debian-upgrade-linux
  • debian-upgrade-linux-4-19

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;