drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-2467-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 14.04 LTS |
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Datum: |
Di, 13. Januar 2015, 18:52 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7841
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7842
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7843
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8884 |
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Applikationen: |
Linux |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2467-1 January 13, 2015
linux-lts-utopic vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description: - linux-lts-utopic: Linux hardware enablement kernel from Utopic
Details:
A null pointer dereference flaw was discovered in the the Linux kernel's SCTP implementation when ASCONF is used. A remote attacker could exploit this flaw to cause a denial of service (system crash) via a malformed INIT chunk. (CVE-2014-7841)
A race condition with MMIO and PIO transactions in the KVM (Kernel Virtual Machine) subsystem of the Linux kernel was discovered. A guest OS user could exploit this flaw to cause a denial of service (guest OS crash) via a specially crafted application. (CVE-2014-7842)
MiloÅ¡ PrchlÃk reported a flaw in how the ARM64 platform handles a single byte overflow in __clear_user. A local user could exploit this flaw to cause a denial of service (system crash) by reading one byte beyond a /dev/zero page boundary. (CVE-2014-7843)
A stack buffer overflow was discovered in the ioctl command handling for the Technotrend/Hauppauge USB DEC devices driver. A local user could exploit this flaw to cause a denial of service (system crash) or possibly gain privileges. (CVE-2014-8884)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04 LTS: linux-image-3.16.0-29-generic 3.16.0-29.39~14.04.1 linux-image-3.16.0-29-generic-lpae 3.16.0-29.39~14.04.1 linux-image-3.16.0-29-lowlatency 3.16.0-29.39~14.04.1 linux-image-3.16.0-29-powerpc-e500mc 3.16.0-29.39~14.04.1 linux-image-3.16.0-29-powerpc-smp 3.16.0-29.39~14.04.1 linux-image-3.16.0-29-powerpc64-emb 3.16.0-29.39~14.04.1 linux-image-3.16.0-29-powerpc64-smp 3.16.0-29.39~14.04.1
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-2467-1 CVE-2014-7841, CVE-2014-7842, CVE-2014-7843, CVE-2014-8884
Package Information: https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-29.39~14.04.1
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