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Debian: CVE-2021-26931: linux, linux-4.19 -- security update

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Debian: CVE-2021-26931: linux, linux-4.19 -- security update

Severity
2
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:P)
Published
02/17/2021
Created
03/11/2021
Added
03/10/2021
Modified
04/01/2021

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)

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

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