drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux
Name: |
Mehrere Probleme in Linux |
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ID: |
USN-3055-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 16.04 LTS |
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Datum: |
Mi, 10. August 2016, 14:18 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4470
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3135
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4794
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5243 |
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Applikationen: |
Linux |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============6079757890976937197== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="2d8LCB461siVmSuspJr6OB3uMW8TJvoK2"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --2d8LCB461siVmSuspJr6OB3uMW8TJvoK2 Content-Type: multipart/mixed; boundary="LuRh1NV1705PlOT5dIKJKpJXKw9MLPQnr" From: john.johansen@canonical.com Reply-To: security@ubuntu.com To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <61bc05fc-a1b6-b69c-cf81-fac30e936317@canonical.com> Subject: [USN-3055-1] Linux kernel vulnerabilities
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========================================================================== Ubuntu Security Notice USN-3055-1 August 10, 2016
linux vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description: - linux: Linux kernel
Details:
Ben Hawkes discovered an integer overflow in the Linux netfilter implementation. On systems running 32 bit kernels, a local unprivileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. (CVE-2016-3135)
It was discovered that the keyring implementation in the Linux kernel did not ensure a data structure was initialized before referencing it after an error condition occurred. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-4470)
Sasha Levin discovered that a use-after-free existed in the percpu allocator in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. (CVE-2016-4794)
Kangjie Lu discovered an information leak in the netlink implementation of the Linux kernel. A local attacker could use this to obtain sensitive information from kernel memory. (CVE-2016-5243)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 LTS: linux-image-4.4.0-34-generic 4.4.0-34.53 linux-image-4.4.0-34-generic-lpae 4.4.0-34.53 linux-image-4.4.0-34-lowlatency 4.4.0-34.53 linux-image-4.4.0-34-powerpc-e500mc 4.4.0-34.53 linux-image-4.4.0-34-powerpc-smp 4.4.0-34.53 linux-image-4.4.0-34-powerpc64-emb 4.4.0-34.53 linux-image-4.4.0-34-powerpc64-smp 4.4.0-34.53
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: http://www.ubuntu.com/usn/usn-3055-1 CVE-2016-3135, CVE-2016-4470, CVE-2016-4794, CVE-2016-5243
Package Information: https://launchpad.net/ubuntu/+source/linux/4.4.0-34.53
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