UBUNTU-CVE-2018-20856

Details

An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an __blk_drain_queue() use-after-free because a certain error case is mishandled.

Affected Packages(38 packages)

linux

Ubuntu 16.04 LTS

Fixed in:

4.4.0-161.189

linux-aws

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1092.103

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:

4.15.0-1055.60

linux-gcp

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1040.42~16.04.1

linux-hwe

Ubuntu 16.04 LTS

Fixed in:

4.15.0-58.64~16.04.1

linux-kvm

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1056.63

linux-oracle

Ubuntu 16.04 LTS

Fixed in:

4.15.0-1021.23~16.04.1

linux-raspi2

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1120.129

linux-snapdragon

Ubuntu 16.04 LTS

Fixed in:

4.4.0-1124.130

References

REPORT

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7

REPORT

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24

REPORT

https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24

REPORT

https://ubuntu.com/security/CVE-2018-20856

ADVISORY

https://ubuntu.com/security/notices/USN-4094-1

ADVISORY

https://ubuntu.com/security/notices/USN-4116-1

ADVISORY

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

REPORT

https://www.cve.org/CVERecord?id=CVE-2018-20856