Mehrere Probleme in Linux
ID: | USN-2847-1 |
Distribution: | Ubuntu |
Plattformen: | Ubuntu 12.04 LTS |
Datum: | So, 20. Dezember 2015, 16:36 |
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) --===============5355583518899426912== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="arxLFjW2h8QIX2PtWqdG7xWJLUfBPrabG" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --arxLFjW2h8QIX2PtWqdG7xWJLUfBPrabG Content-Type: text/plain; charset=utf- Content-Transfer-Encoding: quoted-printable ========================================================================== Ubuntu Security Notice USN-2847-1 December 19, 2015 linux-lts-trusty 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-lts-trusty: Linux hardware enablement kernel from Trusty 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 12.04 LTS: linux-image-3.13.0-74-generic 3.13.0-74.118~precise1 linux-image-3.13.0-74-generic-lpae 3.13.0-74.118~precise1 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-2847-1 CVE-2015-8550, CVE-2015-8551, CVE-2015-8552, http://bugs.launchpad.net/bugs/1527374 Package Information: https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-74.118~precise1 --arxLFjW2h8QIX2PtWqdG7xWJLUfBPrabG 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 iQIcBAEBCgAGBQJWdfk9AAoJEAUvNnAY1cPYs/cQALNnd+MrGU94+18YRrs5zf+5 Ict8rajaAGBnZ391X6MhETKCBOFlz+3ajn5TEUJuZ06Mu7lbCDwJHtnzBoo1LDr8 ihxAO3vdTJAxRSoZIFd24M8zr+X6AsIRnN47oYnrL4uCbyGys/BO5MaFW7FaqPmQ COuAugyTKux2DJEjZW4FY/JPmvQGjCQbRnCWs/+Oqwua8bXzQf2XqG6xstXwxl2I XGYoXYUM+Akjffh3VOgIlnG7znigZDsC6zXWpElycCZFjV8hEZ/HXYu6ziWlMsKA RixtTKS+6kF1+/ahizyHzBa6f8++LTE49a2pavwlepDAZrkaA6fg+1SZ6kgvCEa3 uo3Ot0oABiB9QsIpCXp6F4UaPzIcMkHf3MReZXRL/2xKhLoEQ5uqSLBqWr2Hiseh 5AsDNEikNfIfuJ6Kwpv9BOp/tZGCFTVwJqAUeaYmSxIpW/1jiysG0YibYOclmeTg tfvYiKDHGiMe8SSwUuwgtx/29KtHxLFhTb276i6Bhdr6VxVi+OzEIN2NCwHeLivf 3rAuAoRgM+XMaaWU+8xX6rG83nrtuG7fXn085feJSnKJ4lXmGjsoJLwUbAT8+tlt VqYGuDV23TBD8/upt4GY1NA9jXsPnqWJ0I7unWloiPfBoTR950MHpVp/XYaI23Hd 5QrG46kFazjiIgv5qhBs =Hrhx -----END PGP SIGNATURE----- --arxLFjW2h8QIX2PtWqdG7xWJLUfBPrabG-- --===============5355583518899426912== 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 --===============5355583518899426912==-- |