drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-4367-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 20.04 LTS |
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Datum: |
Mi, 20. Mai 2020, 07:18 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11565
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12657
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19377 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-4367-1 May 19, 2020
linux, linux-aws, linux-gcp, linux-kvm, linux-oracle, linux-riscv vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- 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-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-riscv: Linux kernel for RISC-V systems
Details:
It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service (system crash). (CVE-2019-19377)
It was discovered that the linux kernel did not properly validate certain mount options to the tmpfs virtual memory file system. A local attacker with the ability to specify mount options could use this to cause a denial of service (system crash). (CVE-2020-11565)
It was discovered that the block layer in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2020-12657)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: linux-image-5.4.0-1011-aws 5.4.0-1011.11 linux-image-5.4.0-1011-gcp 5.4.0-1011.11 linux-image-5.4.0-1011-kvm 5.4.0-1011.11 linux-image-5.4.0-1011-oracle 5.4.0-1011.11 linux-image-5.4.0-26-generic 5.4.0-26.30 linux-image-5.4.0-31-generic 5.4.0-31.35 linux-image-5.4.0-31-generic-lpae 5.4.0-31.35 linux-image-5.4.0-31-lowlatency 5.4.0-31.35 linux-image-aws 5.4.0.1011.14 linux-image-gcp 5.4.0.1011.12 linux-image-generic 5.4.0.26.33 linux-image-generic-lpae 5.4.0.31.36 linux-image-gke 5.4.0.1011.12 linux-image-kvm 5.4.0.1011.12 linux-image-lowlatency 5.4.0.31.36 linux-image-oem 5.4.0.31.36 linux-image-oem-osp1 5.4.0.31.36 linux-image-oracle 5.4.0.1011.12 linux-image-virtual 5.4.0.26.33
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://usn.ubuntu.com/4367-1 CVE-2019-19377, CVE-2020-11565, CVE-2020-12657
Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-31.35 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1011.11 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1011.11 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1011.11 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1011.11 https://launchpad.net/ubuntu/+source/linux-riscv/5.4.0-26.30
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