Ubuntu Security Notice 1186-1 - Dan Rosenberg discovered that IPC structures were not correctly initialized on 64bit systems. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy. Steve Chen discovered that setsockopt did not correctly check MSS values. A local attacker could make a specially crafted socket call to crash the system, leading to a denial of service. Vladymyr Denysov discovered that Xen virtual CD-ROM devices were not handled correctly. A local attacker in a guest could make crafted blkback requests that would crash the host, leading to a denial of service. Various other issues were also addressed.
c3a47a1e53eb2444ce4455bf4ddc8ae62e5c824fec3c47e3051068cd376a1811Ubuntu Security Notice 1167-1 - Dan Rosenberg discovered that the Linux kernel TIPC implementation contained multiple integer signedness errors. A local attacker could exploit this to gain root privileges. Dan Rosenberg discovered that the CAN protocol on 64bit systems did not correctly calculate the size of certain buffers. A local attacker could exploit this to crash the system or possibly execute arbitrary code as the root user. Various other issues were also addressed.
8526a398ece12352476245b529d050abf1036c6d1dbd6b2e79564438cb5f197cUbuntu Security Notice 1119-1 - Multiple security flaws have been fixed in the OMAP4 port of the Linux kernel.
ee2b27059547517c9b31d6346cedd7eacba9014e9eeb821192ed01e86e778b49Mandriva Linux Security Advisory 2011-051 - The Linux 2.6 kernel has been updated to mitigate multiple vulnerabilities related to denial of service, arbitrary code execution, stack memory disclosure, restriction bypass, and more.
4cde969b4cdb9c88d249a1bc077eb95b786a6396542e2655f3fdef84c6102638Linux kernel versions prior to 2.6.37-rc2 TCP_MAXSEG kernel panic denial of service exploit that triggers a divide by zero error in net/ipv4/tcp.c.
a828b90c5c0bad6750f1b7c65f1a2de7ed95c1f80ad18127d00d539bc776fa31Linux kernel versions 2.6.37 and below local kernel denial of service exploit that leverages a divide-by-zero error in tcp_select_initial_window when processing user supplied TCP_MAXSEG.
f20e0d2ebc4ff05467a9771775dda2115edfe394b7365dba0410ad1d236a4eabUbuntu Security Notice 1073-1 - Multiple vulnerabilities have been discovered and addressed in the Linux kernel. Gleb Napatov discovered that KVM did not correctly check certain privileged operations. Dan Jacobson discovered that ThinkPad video output was not correctly access controlled. Vasiliy Kulikov discovered that the Linux kernel X.25 implementation did not correctly clear kernel memory. Nelson Elhage discovered that the Linux kernel IPv4 implementation did not properly audit certain bytecodes in netlink messages. Dan Rosenberg discovered that the USB subsystem did not correctly initialize certain structures. Various other issues have also been addressed.
6ba8f6c6dc8aeeea6fd8953752f7beab7c32ebb9e112702d7ac851c16c79263aMandriva Linux Security Advisory 2011-029 - Multiple vulnerabilities have been discovered and fixed in the Linux 2.6 kernel. The X.25 implementation does not properly parse facilities, which allows remote attackers to cause a denial of service (heap memory corruption and panic) or possibly have unspecified other impact via malformed data, a different vulnerability than CVE-2010-4164. The bcm_connect function Broadcast Manager in the Controller Area Network implementation in the Linux creates a publicly accessible file with a filename containing a kernel memory address, which allows local users to obtain potentially sensitive information about kernel memory use by listing this filename. The install_special_mapping function in mm/mmap.c does not make an expected security_file_mmap function call, which allows local users to bypass intended mmap_min_addr restrictions and possibly conduct NULL pointer dereference attacks via a crafted assembly-language application. Various other issues have also been addressed.
65f216d797172b0ef5fb798cc0c6bfad2e1a9bea20f92874be16068901dbc644Ubuntu Security Notice 1054-1 - Gleb Napatov discovered that KVM did not correctly check certain privileged operations. A local attacker with access to a guest kernel could exploit this to crash the host system, leading to a denial of service. Steve Chen discovered that setsockopt did not correctly check MSS values. A local attacker could make a specially crafted socket call to crash the system, leading to a denial of service. Dave Jones discovered that the mprotect system call did not correctly handle merged VMAs. A local attacker could exploit this to crash the system, leading to a denial of service. Vegard Nossum discovered that memory garbage collection was not handled correctly for active sockets. A local attacker could exploit this to allocate all available kernel memory, leading to a denial of service.
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