QID 198303

Date Published: 2021-03-31

QID 198303: Ubuntu Security Notification for Linux, Linux-aws, Linux-aws-hwe, Linux-azure, Linux-azure-4.15, Linux-gcp, (USN-4883-1)

It was discovered that heap overflows existed in the iSCSI subsystem in the Linux kernel.

It was discovered that the iSCSI subsystem in the Linux kernel did not properly restrict access to iSCSI transport handles.

It was discovered that an out-of-bounds read existed in the iSCSI subsystem in the Linux kernel.

A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-27365)

A local attacker could use this to cause a denial of service or expose sensitive information (kernel pointer addresses). (CVE-2021-27363)

A local attacker could use this to cause a denial of service (system crash) or expose sensitive information (kernel memory). (CVE-2021-27364)

CVSS V3 rated as High - 7.8 severity.

CVSS V2 rated as Medium - 4.6 severity.

Solution

Refer to Ubuntu advisory USN-4883-1 for affected packages and patching details, or update with your package manager.

Vendor References

USN-4883-1 - usn.ubuntu.com/4883-1/

CVEs related to QID 198303

CVE-2021-27363 | CVE-2021-27364 | CVE-2021-27365 |

Software Advisories

Advisory ID	Software	Component	Link
USN-4883-1	16.04 (Xenial) on src	linux-image-4.15.0-1095-gcp	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.15.0-1096-aws	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.15.0-1110-azure	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.15.0-139-generic	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.15.0-139-generic-lpae	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.15.0-139-lowlatency	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-1090-kvm	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-1124-aws	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-1152-snapdragon	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-206-generic	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-206-generic-lpae	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-206-lowlatency	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-206-powerpc-e500mc	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-206-powerpc-smp	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-206-powerpc64-emb	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-4.4.0-206-powerpc64-smp	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-aws	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-aws-hwe	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-azure	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-azure-edge	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-gcp	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-generic	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-generic-hwe-16.04	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-generic-lpae	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-generic-lpae-hwe-16.04	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-gke	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-kvm	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-lowlatency	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-lowlatency-hwe-16.04	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-oem	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-powerpc-e500mc	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-powerpc-smp	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-powerpc64-emb	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-powerpc64-smp	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-snapdragon	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-virtual	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	16.04 (Xenial) on src	linux-image-virtual-hwe-16.04	launchpad.net/ubuntu/+source/linux-aws/4.15.0-1096.103
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-1081-raspi2	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-1087-kvm	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-1095-gcp	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-1096-aws	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-1098-snapdragon	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-1110-azure	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-139-generic	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-139-generic-lpae	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-4.15.0-139-lowlatency	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-aws-lts-18.04	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-azure-lts-18.04	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-gcp-lts-18.04	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-generic	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-generic-lpae	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-kvm	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-lowlatency	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-powerpc-e500mc	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-powerpc-smp	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-powerpc64-emb	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-powerpc64-smp	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-raspi2	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-snapdragon	launchpad.net/ubuntu/+source/linux/4.15.0-139.143
USN-4883-1	18.04 (bionic) on src	linux-image-virtual	launchpad.net/ubuntu/+source/linux/4.15.0-139.143

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].