========================================================================== Ubuntu Security Notice USN-3338-1 June 21, 2017 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.04 ESM Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel Details: It was discovered that the stack guard page for processes in the Linux kernel was not sufficiently large enough to prevent overlapping with the heap. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative privileges (CVE-2017-1000364) Jesse Hertz and Tim Newsham discovered that the Linux netfilter implementation did not correctly perform validation when handling 32 bit compatibility IPT_SO_SET_REPLACE events on 64 bit platforms. A local unprivileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code with administrative privileges. (CVE-2016-4997) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM: linux-image-3.2.0-128-generic 3.2.0-128.173 linux-image-3.2.0-128-generic-pae 3.2.0-128.173 linux-image-3.2.0-128-highbank 3.2.0-128.173 linux-image-3.2.0-128-omap 3.2.0-128.173 linux-image-3.2.0-128-powerpc-smp 3.2.0-128.173 linux-image-3.2.0-128-powerpc64-smp 3.2.0-128.173 linux-image-3.2.0-128-virtual 3.2.0-128.173 linux-image-generic 3.2.0.128.142 linux-image-generic-pae 3.2.0.128.142 linux-image-highbank 3.2.0.128.142 linux-image-omap 3.2.0.128.142 linux-image-powerpc-smp 3.2.0.128.142 linux-image-powerpc64-smp 3.2.0.128.142 linux-image-virtual 3.2.0.128.142 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: https://www.ubuntu.com/usn/usn-3338-1 CVE-2016-4997, CVE-2017-1000364 --f+W+jCU1fRNres8c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJZSrzoAAoJEC8Jno0AXoH05NYQAIF5tqq5B0CptiMTbwA9AxmX fB3TLjjf7Y+YGw2WYBmSzXyclZ3Z4KmUZl6Ki6FvchOU374INNtTakJET4ZUmHW4 T2urHeTDDiS/FWO8R5NqaE8QPgB+XEZguaXwpAwwcaU9AqLxyzjdC6wvFFF4G/9Z ifghaHgSoEQdLZj7Dv5lSogl8i3kVN8o7HpFaLm+RISqiOaw0teKAOD3OWPB5KHu u6EZR9IyCQ4oPP3T0l+/LJykfkG+6CPyZR5NhNnjRgFqe7suypoaquEu41Q5xQ+7 bktVDqEwHwDP8s+IqHxhHIslqBiEBYpbT9hV/fBWSQLZdeY+2bOAJptbtILKkLWk eyh9pQmLXie+Db9QnCoAbiRyiVIyW2lLCCmayPYMKTQ2mUl2eIQBIRSW7bVrG//3 Jfd8Jg8wSyf9zYZmxzyn0r3a24NUB0pEmrIthgAjkvwFkIBYn3bXIaRsTYcwMnix BJ9+bk/riOX6bM94AlURbAk0+aULEiUHlhOdUrqDb5i+hmST69HrLlf3MiZsJVCU I6jg96jpdeOZ8Opq4Zgiy08pyADlmRLn+7VELNgiEUS8KlJgkOhDwU1TJNcOQPlt fUdzvGWsxDGMtsnJU5WJc1491rgcG9OcL3+n6rSRhF4w75GwoqlpICof7htBOomq MBYHe3M2D969MkGsOVQJ =cvNl -----END PGP SIGNATURE----- --f+W+jCU1fRNres8c--