========================================================================== September 18, 2017 linux vulnerability ========================================================================== A security issue affects these releases of Ubuntu: | Series | Base kernel | Arch | flavors | |------------------+--------------+----------+------------------| | Ubuntu 16.04 LTS | 4.4.0 | amd64 | generic | | Ubuntu 16.04 LTS | 4.4.0 | amd64 | lowlatency | | Ubuntu 14.04 LTS | 4.4.0 | amd64 | generic | | Ubuntu 14.04 LTS | 4.4.0 | amd64 | lowlatency | Summary: Several security issues were fixed in the kernel. Software Description: - linux: Linux kernel Details: The Linux Kernel running on AMD64 systems will sometimes map the contents of PIE executable, the heap or ld.so to where the stack is mapped allowing attackers to more easily manipulate the stack. (CVE-2017-1000379) It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP cpnfiguration responses. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-1000251) It was discovered that the Flash-Friendly File System (f2fs) implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-10663) Update instructions: The problem can be corrected by updating your livepatches to the following versions: | Kernel | Version | flavors | |-----------------+----------+--------------------------| | 4.4.0-21.37 | 30.3 | generic, lowlatency | | 4.4.0-22.39 | 30.3 | generic, lowlatency | | 4.4.0-22.40 | 30.3 | generic, lowlatency | | 4.4.0-24.43 | 30.3 | generic, lowlatency | | 4.4.0-28.47 | 30.3 | generic, lowlatency | | 4.4.0-31.50 | 30.3 | generic, lowlatency | | 4.4.0-34.53 | 30.3 | generic, lowlatency | | 4.4.0-36.55 | 30.3 | generic, lowlatency | | 4.4.0-38.57 | 30.3 | generic, lowlatency | | 4.4.0-42.62 | 30.3 | generic, lowlatency | | 4.4.0-43.63 | 30.3 | generic, lowlatency | | 4.4.0-45.66 | 30.3 | generic, lowlatency | | 4.4.0-47.68 | 30.3 | generic, lowlatency | | 4.4.0-51.72 | 30.3 | generic, lowlatency | | 4.4.0-53.74 | 30.3 | generic, lowlatency | | 4.4.0-57.78 | 30.3 | generic, lowlatency | | 4.4.0-59.80 | 30.3 | generic, lowlatency | | 4.4.0-62.83 | 30.3 | generic, lowlatency | | 4.4.0-63.84 | 30.3 | generic, lowlatency | | 4.4.0-64.85 | 30.3 | generic, lowlatency | | 4.4.0-66.87 | 30.3 | generic, lowlatency | | 4.4.0-67.88 | 30.3 | generic, lowlatency | | 4.4.0-70.91 | 30.3 | generic, lowlatency | | 4.4.0-71.92 | 30.3 | generic, lowlatency | | 4.4.0-72.93 | 30.3 | generic, lowlatency | | 4.4.0-75.96 | 30.3 | generic, lowlatency | | 4.4.0-77.98 | 30.3 | generic, lowlatency | | 4.4.0-78.99 | 30.3 | generic, lowlatency | | 4.4.0-79.100 | 30.3 | generic, lowlatency | | 4.4.0-81.104 | 30.3 | generic, lowlatency | | 4.4.0-83.106 | 30.3 | generic, lowlatency | | 4.4.0-87.110 | 30.3 | generic, lowlatency | | 4.4.0-89.112 | 30.3 | generic, lowlatency | | 4.4.0-91.114 | 30.3 | generic, lowlatency | | 4.4.0-92.115 | 30.3 | generic, lowlatency | | 4.4.0-93.116 | 30.3 | generic, lowlatency | | lts-4.4.0-21.37_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-22.39_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-22.40_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-24.43_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-28.47_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-31.50_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-34.53_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-36.55_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-38.57_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-42.62_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-45.66_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-47.68_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-51.72_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-53.74_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-57.78_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-59.80_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-62.83_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-63.84_14.04.2-lts-xenial | 14.04.2 | generic, lowlatency | | lts-4.4.0-64.85_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-66.87_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-70.91_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-71.92_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-72.93_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-75.96_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-78.99_14.04.2-lts-xenial | 14.04.2 | generic, lowlatency | | lts-4.4.0-79.100_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-81.104_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-87.110_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-89.112_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-91.114_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-92.115_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | Additionally, you should install an updated kernel with these fixes and reboot at your convienience. References: CVE-2017-1000251, CVE-2017-1000379, CVE-2017-10663 -- 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