Security Advisory

CVE-2021-26931

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2021-02-17 00:00:00

Last updated 2024-08-03 20:33:41

Assigner mitre

CVSS score not scored

State PUBLISHED

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.

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