Rapid7 Vulnerability & Exploit Database

Huawei EulerOS: CVE-2021-26931: kernel security update

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Huawei EulerOS: CVE-2021-26931: kernel security update

Severity
2
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:P)
Published
02/17/2021
Created
06/17/2022
Added
06/16/2022
Modified
06/16/2022

Description

An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.

Solution(s)

  • huawei-euleros-2_0_sp9-upgrade-kernel
  • huawei-euleros-2_0_sp9-upgrade-kernel-tools
  • huawei-euleros-2_0_sp9-upgrade-kernel-tools-libs
  • huawei-euleros-2_0_sp9-upgrade-python3-perf

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

;