drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-2759-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 12.04 LTS |
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Datum: |
Fr, 2. Oktober 2015, 07:54 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6252
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5707
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6526 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2759-1 October 01, 2015
linux vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description: - linux: Linux kernel
Details:
It was discovered that an integer overflow error existed in the SCSI generic (sg) driver in the Linux kernel. A local attacker with write permission to a SCSI generic device could use this to cause a denial of service (system crash) or potentially escalate their privileges. (CVE-2015-5707)
Marc-André Lureau discovered that the vhost driver did not properly release the userspace provided log file descriptor. A privileged attacker could use this to cause a denial of service (resource exhaustion). (CVE-2015-6252)
It was discovered that the Linux kernel's perf subsystem did not bound callchain backtraces on PowerPC 64. A local attacker could use this to cause a denial of service. (CVE-2015-6526)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 12.04 LTS: linux-image-3.2.0-91-generic 3.2.0-91.129 linux-image-3.2.0-91-generic-pae 3.2.0-91.129 linux-image-3.2.0-91-highbank 3.2.0-91.129 linux-image-3.2.0-91-omap 3.2.0-91.129 linux-image-3.2.0-91-powerpc-smp 3.2.0-91.129 linux-image-3.2.0-91-powerpc64-smp 3.2.0-91.129 linux-image-3.2.0-91-virtual 3.2.0-91.129
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. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.
References: http://www.ubuntu.com/usn/usn-2759-1 CVE-2015-5707, CVE-2015-6252, CVE-2015-6526
Package Information: https://launchpad.net/ubuntu/+source/linux/3.2.0-91.129
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