UBUNTU-CVE-2018-20784

Details

In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.

Affected Packages(38 packages)

linux

Ubuntu 16.04 LTS

Fixed in:

4.4.0-170.199

linux-aws

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1099.110

linux-aws-hwe

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1047.49~16.04.1

linux-azure

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1056.61

linux-gcp

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1041.43

linux-hwe

Ubuntu 16.04 LTS

Fixed in:

4.15.0-60.67~16.04.1

linux-kvm

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1063.70

linux-oracle

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1022.25~16.04.1

linux-raspi2

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1126.135

linux-snapdragon

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1130.138

References

REPORT

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c40f7d74c741a907cfaeb73a7697081881c497d0

REPORT

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.2

REPORT

https://git.kernel.org/linus/c40f7d74c741a907cfaeb73a7697081881c497d0

REPORT

https://github.com/torvalds/linux/commit/c40f7d74c741a907cfaeb73a7697081881c497d0

REPORT

https://ubuntu.com/security/CVE-2018-20784

ADVISORY

https://ubuntu.com/security/notices/USN-4115-1

ADVISORY

https://ubuntu.com/security/notices/USN-4118-1

ADVISORY

https://ubuntu.com/security/notices/USN-4211-1

ADVISORY

https://ubuntu.com/security/notices/USN-4211-2

REPORT

https://www.cve.org/CVERecord?id=CVE-2018-20784