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CVE-2018-15746

Publication date 29 August 2018

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

qemu-seccomp.c in QEMU might allow local OS guest users to cause a denial of service (guest crash) by leveraging mishandling of the seccomp policy for threads other than the main thread.

Read the notes from the security team

Status

Package Ubuntu Release Status
qemu 18.10 cosmic
Fixed 1:2.12+dfsg-3ubuntu5
18.04 LTS bionic
Fixed 1:2.11+dfsg-1ubuntu7.6
16.04 LTS xenial Ignored
14.04 LTS trusty Ignored
qemu-kvm 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Notes


mdeslaur

we will not be fixing this issue on trusty and xenial. trust lacks a recent kernel and seccomp version and xenial uses a whitelist based approach instead of a blacklist. Fixing this in xenial is likely to cause regressions.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qemu

Severity score breakdown

Parameter Value
Base score 5.5 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H