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CVE-2018-16847

Published: 2 November 2018

An OOB heap buffer r/w access issue was found in the NVM Express Controller emulation in QEMU. It could occur in nvme_cmb_ops routines in nvme device. A guest user/process could use this flaw to crash the QEMU process resulting in DoS or potentially run arbitrary code with privileges of the QEMU process.

Notes

AuthorNote
mdeslaur
looks like it was introduced by:
https://git.qemu.org/?p=qemu.git;a=commit;h=a896f7f26a1a0417322463439825073c1a917e41

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
qemu-kvm
Launchpad, Ubuntu, Debian
upstream Not vulnerable
(debian: support for Controller Memory Buffers added later)
trusty Does not exist

xenial Does not exist

bionic Does not exist

cosmic Does not exist

qemu
Launchpad, Ubuntu, Debian
upstream Needs triage

trusty Not vulnerable
(code not present)
xenial Not vulnerable
(code not present)
bionic
Released (1:2.11+dfsg-1ubuntu7.8)
cosmic
Released (1:2.12+dfsg-3ubuntu8.1)
Patches:
other: https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg00200.html
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=5e3c0220d7e4f0361c4d36c697a8842f2b583402

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H