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CVE-2019-12381

Publication date 28 May 2019

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

** DISPUTED ** An issue was discovered in ip_ra_control in net/ipv4/ip_sockglue.c in the Linux kernel through 5.1.5. There is an unchecked kmalloc of new_ra, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash). NOTE: this is disputed because new_ra is never used if it is NULL.

Read the notes from the security team

Status

Package Ubuntu Release Status
linux 19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Ignored was needs-triage ESM criteria
linux-aws 19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Ignored was needs-triage ESM criteria
linux-aws-hwe 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Not in release
linux-azure 19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Ignored was needs-triage ESM criteria
linux-azure-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored end of standard support
14.04 LTS trusty Not in release
linux-euclid 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored end of life, was needs-triage
14.04 LTS trusty Not in release
linux-flo 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored abandoned
14.04 LTS trusty Not in release
linux-gcp 19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Not in release
linux-gcp-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Ignored end of standard support, was needs-triage
16.04 LTS xenial Ignored end of life
14.04 LTS trusty Not in release
linux-goldfish 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored end of life
14.04 LTS trusty Not in release
linux-grouper 19.04 disco Not in release
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
linux-hwe 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Not in release
linux-hwe-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Not in release
linux-kvm 19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Not in release
linux-lts-trusty 19.04 disco Not in release
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
linux-lts-utopic 19.04 disco Not in release
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
linux-lts-vivid 19.04 disco Not in release
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
linux-lts-wily 19.04 disco Not in release
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
linux-lts-xenial 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Ignored was needs-triage ESM criteria
linux-maguro 19.04 disco Not in release
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
linux-mako 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored abandoned
14.04 LTS trusty Not in release
linux-manta 19.04 disco Not in release
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
linux-oem 19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored end of life, was needs-triage
14.04 LTS trusty Not in release
linux-oracle 19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored NULL pointer derefence is not possible
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Not in release
linux-raspi2 19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored end of standard support
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Not in release
linux-snapdragon 19.04 disco Ignored end of life
18.10 cosmic Not in release
18.04 LTS bionic Ignored end of standard support
16.04 LTS xenial Ignored NULL pointer derefence is not possible
14.04 LTS trusty Not in release

Notes

tyhicks

This CVE is disputed due to a lack of security impact. I've reviewed all of our current kernels and have verified that none of them attempt to dereference a NULL new_ra pointer.

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