drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in Linux
Name: |
Zwei Probleme in Linux |
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ID: |
USN-4879-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 20.04 LTS, Ubuntu 20.10 |
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Datum: |
Mi, 17. März 2021, 07:12 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36158
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20194 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-4879-1 March 16, 2021
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.10 - Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi (V8) systems - linux-hwe-5.8: Linux hardware enablement (HWE) kernel
Details:
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)
Loris Reiff discovered that the BPF implementation in the Linux kernel did not properly validate attributes in the getsockopt BPF hook. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-20194)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.10: linux-image-5.8.0-1017-raspi 5.8.0-1017.20 linux-image-5.8.0-1017-raspi-nolpae 5.8.0-1017.20 linux-image-5.8.0-1020-kvm 5.8.0-1020.22 linux-image-5.8.0-1022-oracle 5.8.0-1022.23 linux-image-5.8.0-1024-azure 5.8.0-1024.26 linux-image-5.8.0-1024-gcp 5.8.0-1024.25 linux-image-5.8.0-1025-aws 5.8.0-1025.27 linux-image-5.8.0-45-generic 5.8.0-45.51 linux-image-5.8.0-45-generic-64k 5.8.0-45.51 linux-image-5.8.0-45-generic-lpae 5.8.0-45.51 linux-image-5.8.0-45-lowlatency 5.8.0-45.51 linux-image-aws 5.8.0.1025.27 linux-image-azure 5.8.0.1024.24 linux-image-gcp 5.8.0.1024.24 linux-image-generic 5.8.0.45.50 linux-image-generic-64k 5.8.0.45.50 linux-image-generic-lpae 5.8.0.45.50 linux-image-gke 5.8.0.1024.24 linux-image-kvm 5.8.0.1020.22 linux-image-lowlatency 5.8.0.45.50 linux-image-oem-20.04 5.8.0.45.50 linux-image-oracle 5.8.0.1022.21 linux-image-raspi 5.8.0.1017.20 linux-image-raspi-nolpae 5.8.0.1017.20 linux-image-virtual 5.8.0.45.50
Ubuntu 20.04 LTS: linux-image-5.8.0-45-generic 5.8.0-45.51~20.04.1+1 linux-image-5.8.0-45-generic-64k 5.8.0-45.51~20.04.1+1 linux-image-5.8.0-45-generic-lpae 5.8.0-45.51~20.04.1 linux-image-5.8.0-45-lowlatency 5.8.0-45.51~20.04.1+1 linux-image-generic-64k-hwe-20.04 5.8.0.45.51~20.04.31 linux-image-generic-hwe-20.04 5.8.0.45.51~20.04.31 linux-image-generic-lpae-hwe-20.04 5.8.0.45.51~20.04.31 linux-image-lowlatency-hwe-20.04 5.8.0.45.51~20.04.31 linux-image-virtual-hwe-20.04 5.8.0.45.51~20.04.31
After a standard system update you need to reboot your computer to make all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.
References: https://ubuntu.com/security/notices/USN-4879-1 CVE-2020-36158, CVE-2021-20194
Package Information: https://launchpad.net/ubuntu/+source/linux/5.8.0-45.51 https://launchpad.net/ubuntu/+source/linux-aws/5.8.0-1025.27 https://launchpad.net/ubuntu/+source/linux-azure/5.8.0-1024.26 https://launchpad.net/ubuntu/+source/linux-gcp/5.8.0-1024.25 https://launchpad.net/ubuntu/+source/linux-kvm/5.8.0-1020.22 https://launchpad.net/ubuntu/+source/linux-oracle/5.8.0-1022.23 https://launchpad.net/ubuntu/+source/linux-raspi/5.8.0-1017.20 https://launchpad.net/ubuntu/+source/linux-hwe-5.8/5.8.0-45.51~20.04.1
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