Mehrere Probleme in Linux
ID: | USN-2851-1 |
Distribution: | Ubuntu |
Plattformen: | Ubuntu 15.10 |
Datum: | So, 20. Dezember 2015, 16:38 |
Referenzen: | http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8551
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8550 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8552 |
Applikationen: | Linux |
Originalnachricht |
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============6354871986742201395== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="luVHWvpIe82FQSf0E0Rs29tNWK12NTsbM" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --luVHWvpIe82FQSf0E0Rs29tNWK12NTsbM Content-Type: text/plain; charset=utf- Content-Transfer-Encoding: quoted-printable ========================================================================== Ubuntu Security Notice USN-2851-1 December 19, 2015 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 15.10 Summary: Several security issues were fixed in the kernel. Software Description: - linux: Linux kernel Details: Felix Wilhelm discovered a race condition in the Xen paravirtualized drivers which can cause double fetch vulnerabilities. An attacker in the paravirtualized guest could exploit this flaw to cause a denial of service (crash the host) or potentially execute arbitrary code on the host. (CVE-2015-8550) Konrad Rzeszutek Wilk discovered the Xen PCI backend driver does not perform sanity checks on the device's state. An attacker could exploit this flaw to cause a denial of service (NULL dereference) on the host. (CVE-2015-8551) Konrad Rzeszutek Wilk discovered the Xen PCI backend driver does not perform sanity checks on the device's state. An attacker could exploit this flaw to cause a denial of service by flooding the logging system with WARN() messages causing the initial domain to exhaust disk space. (CVE-2015-8552) Jann Horn discovered a ptrace issue with user namespaces in the Linux kernel. The namespace owner could potentially exploit this flaw by ptracing a root owned process entering the user namespace to elevate its privileges and potentially gain access outside of the namespace. (http://bugs.launchpad.net/bugs/1527374) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 15.10: linux-image-4.2.0-22-generic 4.2.0-22.27 linux-image-4.2.0-22-generic-lpae 4.2.0-22.27 linux-image-4.2.0-22-lowlatency 4.2.0-22.27 linux-image-4.2.0-22-powerpc-e500mc 4.2.0-22.27 linux-image-4.2.0-22-powerpc-smp 4.2.0-22.27 linux-image-4.2.0-22-powerpc64-emb 4.2.0-22.27 linux-image-4.2.0-22-powerpc64-smp 4.2.0-22.27 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-2851-1 CVE-2015-8550, CVE-2015-8551, CVE-2015-8552, http://bugs.launchpad.net/bugs/1527374 Package Information: https://launchpad.net/ubuntu/+source/linux/4.2.0-22.27 --luVHWvpIe82FQSf0E0Rs29tNWK12NTsbM Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJWdfnPAAoJEAUvNnAY1cPYDQAP/j6VABilCRE6QT8DxwJJME12 KMF7IC2Xv6D/LukzTsvo0S05nvrGkRYo7wZFODAQF+PnJbt/Cmzz143xQ9xW+h25 HPYRc6iSHdIf0Jpr7RuShmN3PH66XIVU49PVteGhJXQVpLzpvrnrKc29IRCe9dM8 YxqtQIE2bzxf6FApMK+FUnoXCnlRF2kix8v5aVKcr7lQEMhfN2WNqtQk0x1HivhO Il3i6p5LYd+N+zQgtczTjcwTf6q5L0FoUWPppnU1YDbhakUib+j5crxCDgy8f2NC VlVLhC5PhH0Vynn7sTiZX3zqvcRXm0ISMsM5vfGo/3vdb0tpQuyQsIw7oloaayxM BwL15dkD1WnSxiW8l0DjEJL17j4RWQ3NEBIxqEmOkVLAlC+pCqXKJtuqW9xwLXci MjQ2FlJpzPvGvLC7PmpSW8sggdT8GtvJay4DeWqeO7wyT09ve/shP64cNCV0GTk5 I4v5wfoFk4y3XKhjnI4UOKXJe3k7z3gbBWafSvxH8Zpu4PPzrnBXwBzC/SDbuCyz hyYpLNG+2py84CirKvSrXoHqY5K8pM77n1l8I1rZoiYimp5lno+XecqSk7/joWED LKqQarOarJOMLF4Ie3BFhwJcml5ACygQRV9sZtwx3SZnH3zgVdthk+AkFXbebyPp 0/JHe+3av82dAZZXGZ26 =3Kvg -----END PGP SIGNATURE----- --luVHWvpIe82FQSf0E0Rs29tNWK12NTsbM-- --===============6354871986742201395== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce --===============6354871986742201395==-- |