Qualys has released a large amount of research surrounding the use of stack clash vulnerabilities and how stack guard on Linux can be bypassed.
a388b77480d7ab1132bd2ce877ddcf881022854bdff22370446258252e109e37VMware Security Advisory 2011-0009 - VMware hosted product updates, ESX patches and VI Client update resolve multiple security issues.
ac81003c8521d9038a00fe7829e93d35f6b931448aaab580b07ed143dc3479bbVMware Security Advisory 2011-0007 - VMware ESXi and ESX could encounter a socket exhaustion situation which may lead to a denial of service. Updates to Likewise components and to the ESX Service Console address security vulnerabilities.
5f83afe772b762282a93600a631d74790ef776e16da02e857f1d10bca8105619Mandriva 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.
4cde969b4cdb9c88d249a1bc077eb95b786a6396542e2655f3fdef84c6102638Ubuntu Security Notice 1074-2 - USN-1074-1 fixed vulnerabilities in linux-fsl-imx51 in Ubuntu 9.10. This update provides the corresponding updates for Ubuntu 10.04. Multiple vulnerabilities have been discovered and addressed in the Linux kernel. Al Viro discovered a race condition in the TTY driver. Dan Rosenberg discovered that the MOVE_EXT ext4 ioctl did not correctly check file permissions. Neil Brown discovered that NFSv4 did not correctly check certain write requests. David Howells discovered that DNS resolution in CIFS could be spoofed. Various other issues have also been addressed.
4e15776b2f435c92a453d8aac2203f207e854e4b3f906900fe4b4f17ed2e2a0cUbuntu Security Notice 1074-1 - Multiple vulnerabilities have been discovered and addressed in the Linux kernel. Al Viro discovered a race condition in the TTY driver. Dan Rosenberg discovered that the MOVE_EXT ext4 ioctl did not correctly check file permissions. Neil Brown discovered that NFSv4 did not correctly check certain write requests. David Howells discovered that DNS resolution in CIFS could be spoofed. Various other issues have also been addressed.
f173020807305076d904d843200bcb5d00acee46687f271c4a2338df4358536bMandriva Linux Security Advisory 2010-172 - Some vulnerabilities were discovered and corrected in the Linux kernel. Buffer overflow in the ecryptfs_uid_hash macro in fs/ecryptfs/messaging.c in the eCryptfs subsystem in the Linux kernel before 2.6.35 might allow local users to gain privileges or cause a denial of service via unspecified vectors. The DNS resolution functionality in the CIFS implementation in the Linux kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled, relies on a user's keyring for the dns_resolver upcall in the cifs.upcall userspace helper, which allows local users to spoof the results of DNS queries and perform arbitrary CIFS mounts via vectors involving an add_key call, related to a cache stuffing issue and MS-DFS referrals. The do_anonymous_page function in mm/memory.c in the Linux kernel before 2.6.27.52, 2.6.32.x before 2.6.32.19, 2.6.34.x before 2.6.34.4, and 2.6.35.x before 2.6.35.2 does not properly separate the stack and the heap, which allows context-dependent attackers to execute arbitrary code by writing to the bottom page of a shared memory segment, as demonstrated by a memory-exhaustion attack against the X.Org X server. Integer overflow in the ext4_ext_get_blocks function in fs/ext4/extents.c in the Linux kernel before 2.6.34 allows local users to cause a denial of service via a write operation on the last block of a large file, followed by a sync operation.
0270ee39ecc23658fc44a57fdd5c09faa6452958070bb6def481339131293b2fUbuntu Security Notice 974-2 - USN-974-1 fixed vulnerabilities in the Linux kernel. The fixes for CVE-2010-2240 caused failures for Xen hosts. This update fixes the problem. Gael Delalleu, Rafal Wojtczuk, and Brad Spengler discovered that the memory manager did not properly handle when applications grow stacks into adjacent memory regions. Kees Cook discovered that under certain situations the ioctl subsystem for DRM did not properly sanitize its arguments. Ben Hawkes discovered an integer overflow in the Controller Area Network (CAN) subsystem when setting up frame content and filtering certain messages.
ef7beb7ed5389a2714f703ccb8c3972423bb198f16c7050a57bf7a09f204ccabDebian Linux Security Advisory 2094-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation.
fed127f77025386b3f6cd99544d5776eec1b1a355b7e3faa1b1aefe334ea8219Ubuntu Security Notice 974-1 - Gael Delalleu, Rafal Wojtczuk, and Brad Spengler discovered that the memory manager did not properly handle when applications grow stacks into adjacent memory regions. A local attacker could exploit this to gain control of certain applications, potentially leading to privilege escalation, as demonstrated in attacks against the X server. Kees Cook discovered that under certain situations the ioctl subsystem for DRM did not properly sanitize its arguments. A local attacker could exploit this to read previously freed kernel memory, leading to a loss of privacy. Ben Hawkes discovered an integer overflow in the Controller Area Network (CAN) subsystem when setting up frame content and filtering certain messages. An attacker could send specially crafted CAN traffic to crash the system or gain root privileges.
1c8fea9fc0573829fd324d86f35defb88110269f7e3e089c52f6e6177fdd502c
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