drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in Linux
Name: |
Zwei Probleme in Linux |
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ID: |
USN-4255-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 18.04 LTS |
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Datum: |
Di, 28. Januar 2020, 07:03 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7053
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14615 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-4255-1 January 28, 2020
linux, linux-aws, linux-oem vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 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-oem: Linux kernel for OEM processors
Details:
It was discovered that the Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors. A local attacker could use this to expose sensitive information. (CVE-2019-14615)
It was discovered that a race condition can lead to a use-after-free while destroying GEM contexts in the i915 driver for the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-7053)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04 LTS: linux-image-4.15.0-1058-aws 4.15.0-1058.60 linux-image-4.15.0-1067-oem 4.15.0-1067.77 linux-image-4.15.0-76-generic 4.15.0-76.86 linux-image-4.15.0-76-generic-lpae 4.15.0-76.86 linux-image-4.15.0-76-lowlatency 4.15.0-76.86 linux-image-aws 4.15.0.1058.59 linux-image-aws-lts-18.04 4.15.0.1058.59 linux-image-generic 4.15.0.76.78 linux-image-generic-lpae 4.15.0.76.78 linux-image-lowlatency 4.15.0.76.78 linux-image-oem 4.15.0.1067.71 linux-image-powerpc-e500mc 4.15.0.76.78 linux-image-powerpc-smp 4.15.0.76.78 linux-image-powerpc64-emb 4.15.0.76.78 linux-image-powerpc64-smp 4.15.0.76.78 linux-image-virtual 4.15.0.76.78
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/4255-1 CVE-2019-14615, CVE-2020-7053
Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-76.86 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1058.60 https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1067.77
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