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Debian: CVE-2020-27675: linux, linux-4.19 -- security update

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Debian: CVE-2020-27675: linux, linux-4.19 -- security update

Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
10/22/2020
Created
12/08/2020
Added
12/07/2020
Modified
12/18/2020

Description

An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/events_base.c allows event-channel removal during the event-handling loop (a race condition). This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash via events for an in-reconfiguration paravirtualized device, aka CID-073d0552ead5.

Solution(s)

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

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