CVE-2021-26931

Updated: 2024-11-30 02:21:17.924743

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x LOW 1.9000000000000001
CVSS Version 3.x MEDIUM 5.5

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

CentOS 6 ELS kernel 2.6.32 5.5 MEDIUM Not Vulnerable 2022-01-24 23:22:10
CentOS 7 ELS kernel 3.10.0 5.5 MEDIUM Ignored 2023-09-19 09:30:11
CentOS 8.4 ELS kernel 4.18.0 5.5 MEDIUM Ignored 2022-02-10 08:36:37
CentOS 8.5 ELS kernel 4.18.0 5.5 MEDIUM Ignored 2022-02-21 02:30:47
CloudLinux 6 ELS kernel 2.6.32 5.5 MEDIUM Ignored 2022-01-27 11:20:07
Oracle Linux 6 ELS kernel 2.6.32 5.5 MEDIUM Ignored 2022-01-27 11:20:07
Ubuntu 16.04 ELS linux-hwe 4.15.0 5.5 MEDIUM Released 2023-04-27 14:04:58
Ubuntu 16.04 ELS linux 4.4.0 5.5 MEDIUM Not Vulnerable 2021-12-17 07:56:08
Ubuntu 18.04 ELS linux 4.15.0 5.5 MEDIUM Ignored 2023-03-02 04:04:05