drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-4411-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 20.04 LTS |
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Datum: |
Fr, 3. Juli 2020, 07:16 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12768
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10711
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10732
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13143
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12770 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-4411-1 July 02, 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 elf handling code in the Linux kernel did not initialize memory before using it in certain situations. A local attacker could use this to possibly expose sensitive information (kernel memory). (CVE-2020-10732)
Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770)
It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143)
It was discovered that the KVM implementation in the Linux kernel did not properly deallocate memory on initialization for some processors. A local attacker could possibly use this to cause a denial of service. (CVE-2020-12768)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: linux-image-5.4.0-1018-aws 5.4.0-1018.18 linux-image-5.4.0-1019-gcp 5.4.0-1019.19 linux-image-5.4.0-1019-oracle 5.4.0-1019.19 linux-image-5.4.0-28-generic 5.4.0-28.32 linux-image-5.4.0-40-generic 5.4.0-40.44 linux-image-5.4.0-40-generic-lpae 5.4.0-40.44 linux-image-5.4.0-40-lowlatency 5.4.0-40.44 linux-image-aws 5.4.0.1018.19 linux-image-gcp 5.4.0.1019.17 linux-image-generic 5.4.0.28.35 linux-image-generic-lpae 5.4.0.40.43 linux-image-gke 5.4.0.1019.17 linux-image-kvm 5.4.0.1018.17 linux-image-lowlatency 5.4.0.40.43 linux-image-oem 5.4.0.40.43 linux-image-oem-osp1 5.4.0.40.43 linux-image-oracle 5.4.0.1019.17 linux-image-virtual 5.4.0.28.35
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/4411-1 CVE-2020-10711, CVE-2020-10732, CVE-2020-12768, CVE-2020-12770, CVE-2020-13143
Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-40.44 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1018.18 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1019.19 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1018.18 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1019.19 https://launchpad.net/ubuntu/+source/linux-riscv/5.4.0-28.32
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