USN-4876-1: Linux kernel vulnerabilities
First published: Tue Mar 16 2021(Updated: )
Olivier Benjamin and Pawel Wieczorkiewicz discovered a race condition the Xen paravirt block backend in the Linux kernel, leading to a use-after-free vulnerability. An attacker in a guest VM could use this to cause a denial of service in the host OS. (CVE-2020-29569) It was discovered that the Marvell WiFi-Ex device driver in the Linux kernel did not properly validate ad-hoc SSIDs. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-36158) 吴异 discovered that the NFS implementation in the Linux kernel did not properly prevent access outside of an NFS export that is a subdirectory of a file system. An attacker could possibly use this to bypass NFS access restrictions. (CVE-2021-3178)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-4.4.0-1089-kvm | <4.4.0-1089.98 | 4.4.0-1089.98 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-1123-aws | <4.4.0-1123.137 | 4.4.0-1123.137 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-1147-raspi2 | <4.4.0-1147.157 | 4.4.0-1147.157 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-1151-snapdragon | <4.4.0-1151.161 | 4.4.0-1151.161 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-generic | <4.4.0-204.236 | 4.4.0-204.236 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-generic-lpae | <4.4.0-204.236 | 4.4.0-204.236 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-lowlatency | <4.4.0-204.236 | 4.4.0-204.236 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-powerpc-e500mc | <4.4.0-204.236 | 4.4.0-204.236 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-powerpc-smp | <4.4.0-204.236 | 4.4.0-204.236 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-powerpc64-emb | <4.4.0-204.236 | 4.4.0-204.236 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-powerpc64-smp | <4.4.0-204.236 | 4.4.0-204.236 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-aws | <4.4.0.1123.128 | 4.4.0.1123.128 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-generic | <4.4.0.204.210 | 4.4.0.204.210 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-generic-lpae | <4.4.0.204.210 | 4.4.0.204.210 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-kvm | <4.4.0.1089.87 | 4.4.0.1089.87 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-lowlatency | <4.4.0.204.210 | 4.4.0.204.210 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc-e500mc | <4.4.0.204.210 | 4.4.0.204.210 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc-smp | <4.4.0.204.210 | 4.4.0.204.210 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc64-emb | <4.4.0.204.210 | 4.4.0.204.210 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc64-smp | <4.4.0.204.210 | 4.4.0.204.210 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-raspi2 | <4.4.0.1147.147 | 4.4.0.1147.147 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-snapdragon | <4.4.0.1151.143 | 4.4.0.1151.143 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-virtual | <4.4.0.204.210 | 4.4.0.204.210 |
| =16.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-1087-aws | <4.4.0-1087.91 | 4.4.0-1087.91 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-generic | <4.4.0-204.236~14.04.1 | 4.4.0-204.236~14.04.1 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-generic-lpae | <4.4.0-204.236~14.04.1 | 4.4.0-204.236~14.04.1 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-lowlatency | <4.4.0-204.236~14.04.1 | 4.4.0-204.236~14.04.1 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-powerpc-e500mc | <4.4.0-204.236~14.04.1 | 4.4.0-204.236~14.04.1 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-powerpc-smp | <4.4.0-204.236~14.04.1 | 4.4.0-204.236~14.04.1 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-powerpc64-emb | <4.4.0-204.236~14.04.1 | 4.4.0-204.236~14.04.1 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-4.4.0-204-powerpc64-smp | <4.4.0-204.236~14.04.1 | 4.4.0-204.236~14.04.1 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-aws | <4.4.0.1087.84 | 4.4.0.1087.84 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-generic-lpae-lts-xenial | <4.4.0.204.178 | 4.4.0.204.178 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-generic-lts-xenial | <4.4.0.204.178 | 4.4.0.204.178 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-lowlatency-lts-xenial | <4.4.0.204.178 | 4.4.0.204.178 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc-e500mc-lts-xenial | <4.4.0.204.178 | 4.4.0.204.178 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc-smp-lts-xenial | <4.4.0.204.178 | 4.4.0.204.178 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc64-emb-lts-xenial | <4.4.0.204.178 | 4.4.0.204.178 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-powerpc64-smp-lts-xenial | <4.4.0.204.178 | 4.4.0.204.178 |
| =14.04 | ||
| All of | ||
| ubuntu/linux-image-virtual-lts-xenial | <4.4.0.204.178 | 4.4.0.204.178 |
| =14.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2020-29569
- https://ubuntu.com/security/CVE-2021-3178
- https://ubuntu.com/security/CVE-2020-36158
- https://ubuntu.com/security/notices/USN-4749-1
- https://ubuntu.com/security/notices/USN-4750-1
- https://ubuntu.com/security/notices/USN-4751-1
- https://ubuntu.com/security/notices/USN-4877-1
- https://ubuntu.com/security/notices/USN-4878-1
- https://ubuntu.com/security/notices/USN-4910-1
- https://ubuntu.com/security/notices/USN-4912-1
- https://ubuntu.com/security/notices/USN-4879-1
- https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1089.98
- https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1123.137
- https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1147.157
- https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1151.161
- https://launchpad.net/ubuntu/+source/linux-signed/4.4.0-204.236
- https://launchpad.net/ubuntu/+source/linux/4.4.0-204.236
- https://launchpad.net/ubuntu/+source/linux-meta-aws/4.4.0.1123.128
- https://launchpad.net/ubuntu/+source/linux-meta/4.4.0.204.210
- https://launchpad.net/ubuntu/+source/linux-meta-kvm/4.4.0.1089.87
- https://launchpad.net/ubuntu/+source/linux-meta-raspi2/4.4.0.1147.147
- https://launchpad.net/ubuntu/+source/linux-meta-snapdragon/4.4.0.1151.143
- https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1087.91
- https://launchpad.net/ubuntu/+source/linux-signed-lts-xenial/4.4.0-204.236~14.04.1
- https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-204.236~14.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-aws/4.4.0.1087.84
- https://launchpad.net/ubuntu/+source/linux-meta-lts-xenial/4.4.0.204.178
- https://ubuntu.com/security/notices/USN-4876-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
- agent/weakness
- agent/severity
- agent/references
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- agent/title
- agent/description
- agent/event
- agent/tags
- agent/trending
- collector/usn
- source/Ubuntu
- agent/software-canonical-lookup
- package-manager/ubuntu
- vendor/ubuntu
- canonical/ubuntu ubuntu
- version/ubuntu ubuntu/16.04
- version/ubuntu ubuntu/14.04