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CVE-2018-1091

Publication date 27 March 2018

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.

Status

Package Ubuntu Release Status
linux 17.10 artful
Fixed 4.13.0-17.20
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
linux-aws 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
linux-azure 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
linux-euclid 17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-flo 17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-gcp 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-gke 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-goldfish 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-grouper 17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-hwe 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-hwe-edge 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-kvm 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-lts-trusty 17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-utopic 17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-vivid 17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-wily 17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-xenial 17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty
Not affected
linux-maguro 17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-mako 17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-manta 17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oem 17.10 artful Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-raspi2 17.10 artful
Fixed 4.13.0-1006.6
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-snapdragon 17.10 artful
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release

Patch details

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

Package Patch details
linux

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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H