Ubuntu Security Notice 1256-1 - It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. Vasiliy Kulikov discovered that the Bluetooth stack did not correctly clear memory. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy. Various other issues were also addressed.
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Ubuntu Security Notice 1253-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. Various other issues were also addressed.
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Ubuntu Security Notice 1245-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. Various other issues were also addressed.
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Ubuntu Security Notice 1241-1 - It was discovered that the Stream Control Transmission Protocol (SCTP) implementation incorrectly calculated lengths. If the net.sctp.addip_enable variable was turned on, a remote attacker could send specially crafted traffic to crash the system. Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Various other issues were also addressed.
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Ubuntu Security Notice 1240-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. Various other issues were also addressed.
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Ubuntu Security Notice 1239-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. Various other issues were also addressed.
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Ubuntu Security Notice 1227-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. Various other issues were also addressed.
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Ubuntu Security Notice 1220-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. Various other issues were also addressed.
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Ubuntu Security Notice 1219-1 - Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. Various other issues were also addressed.
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Red Hat Security Advisory 2011-1253-01 - Updated kernel-rt packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise MRG 2.0. The Red Hat Security Response Team has rated this update as having important security impact.
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Debian Linux Security Advisory 2303-2 - The linux-2.6 and user-mode-linux upgrades from DSA-2303-1 has caused a regression that can result in an oops during invalid accesses to /proc/<pid>/maps files.
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Debian Linux Security Advisory 2303-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation.
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Red Hat Security Advisory 2011-1189-01 - Updated kernel packages that fix several security issues, various bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. Using PCI passthrough without interrupt remapping support allowed KVM guests to generate MSI interrupts and thus potentially inject traps. A privileged guest user could use this flaw to crash the host or possibly escalate their privileges on the host. The fix for this issue can prevent PCI passthrough working and guests starting. Flaw in the client-side NLM implementation could allow a local, unprivileged user to cause a denial of service.
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Red Hat Security Advisory 2011-1106-01 - The kernel packages have been updated to address a vulnerability. A flaw allowed napi_reuse_skb() to be called on VLAN packets. An attacker on the local network could trigger this flaw by sending specially-crafted packets to a target system, possibly causing a denial of service.
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Red Hat Security Advisory 2011-1090-01 - The rhev-hypervisor package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. A flaw was found that allowed napi_reuse_skb() to be called on VLAN packets. An attacker on the local network could trigger this flaw by sending specially-crafted packets to a target system, possibly causing a denial of service.
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Red Hat Security Advisory 2011-0927-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. An integer overflow flaw in ib_uverbs_poll_cq() could allow a local, unprivileged user to cause a denial of service or escalate their privileges. A race condition in the way new InfiniBand connections were set up could allow a remote user to cause a denial of service. Various other issues were also addressed.
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