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CVE-2020-13754

Published: 2 June 2020

hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address in an msi-x mmio operation.

Notes

AuthorNote
mdeslaur
the fix for this issue introduced a regression, see:
https://bugs.launchpad.net/qemu/+bug/1886318

Priority

Medium

Cvss 3 Severity Score

6.7

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
xenial
Released (1:2.5+dfsg-5ubuntu10.45)
bionic
Released (1:2.11+dfsg-1ubuntu7.31)
eoan Ignored
(end of life)
focal
Released (1:4.2-3ubuntu6.4)
groovy Not vulnerable
(1:5.0-5ubuntu4)
hirsute Not vulnerable
(1:5.0-5ubuntu4)
trusty
Released (2.0.0+dfsg-2ubuntu1.47+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=5d971f9e672507210e77d020d89e0e89165c8fc9
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=dba04c3488c4699f5afe96f66e448b1d447cf3fb (regression fix)
qemu-kvm
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 6.7
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H