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CVE-2011-2525

Status Candidate

Overview

The qdisc_notify function in net/sched/sch_api.c in the Linux kernel before 2.6.35 does not prevent tc_fill_qdisc function calls referencing builtin (aka CQ_F_BUILTIN) Qdisc structures, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a crafted call.

Related Files

Ubuntu Security Notice USN-1286-1
Posted Dec 3, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1286-1 - Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service. Robert Swiecki discovered that mapping extensions were incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service. It was discovered that the wireless stack incorrectly verified SSID lengths. A local attacker could exploit this to cause a denial of service or gain root privileges. Various other issues were also addressed.

tags | advisory, denial of service, local, root
systems | linux, ubuntu
advisories | CVE-2011-2491, CVE-2011-2496, CVE-2011-2517, CVE-2011-2525, CVE-2011-4077, CVE-2011-4081, CVE-2011-4132, CVE-2011-4326, CVE-2011-4330
MD5 | 181615408671a2238103499da1dc4198
Ubuntu Security Notice USN-1269-1
Posted Nov 24, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1269-1 - Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service. Robert Swiecki discovered that mapping extensions were incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service. It was discovered that the wireless stack incorrectly verified SSID lengths. A local attacker could exploit this to cause a denial of service or gain root privileges. Various other issues were also addressed.

tags | advisory, denial of service, local, root
systems | linux, ubuntu
advisories | CVE-2011-2491, CVE-2011-2496, CVE-2011-2517, CVE-2011-2525
MD5 | 1672934ba43067cd176b264118166431
Ubuntu Security Notice USN-1274-1
Posted Nov 22, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1274-1 - Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly handled unlock requests. A local attacker could exploit this to cause a denial of service. Robert Swiecki discovered that mapping extensions were incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service. It was discovered that the wireless stack incorrectly verified SSID lengths. A local attacker could exploit this to cause a denial of service or gain root privileges. Various other issues were also addressed.

tags | advisory, denial of service, local, root
systems | linux, ubuntu
advisories | CVE-2011-2491, CVE-2011-2496, CVE-2011-2517, CVE-2011-2525
MD5 | 8b2099a6839864a685ebcf30f2a8e06f
Ubuntu Security Notice USN-1241-1
Posted Oct 25, 2011
Authored by Ubuntu | Site security.ubuntu.com

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.

tags | advisory, remote, denial of service, kernel, protocol
systems | linux, ubuntu
advisories | CVE-2011-1573, CVE-2011-1576, CVE-2011-1776, CVE-2011-2213, CVE-2011-2494, CVE-2011-2495, CVE-2011-2496, CVE-2011-2497, CVE-2011-2517, CVE-2011-2525, CVE-2011-2695, CVE-2011-2723, CVE-2011-2905, CVE-2011-2909, CVE-2011-2928, CVE-2011-3188, CVE-2011-3191, CVE-2011-3363
MD5 | 447c461aca2cec9be3fb95e5c596cd81
Debian Security Advisory 2310-1
Posted Sep 23, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2310-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leak.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2009-4067, CVE-2011-0712, CVE-2011-1020, CVE-2011-2209, CVE-2011-2211, CVE-2011-2213, CVE-2011-2484, CVE-2011-2491, CVE-2011-2492, CVE-2011-2495, CVE-2011-2496, CVE-2011-2497, CVE-2011-2525, CVE-2011-2928, CVE-2011-3188, CVE-2011-3191
MD5 | 65d8d1aa0819020e5a4ce26c40213ab3
Debian Security Advisory 2303-2
Posted Sep 11, 2011
Authored by Debian | Site debian.org

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.

tags | advisory
systems | linux, debian
advisories | CVE-2011-1020, CVE-2011-1576, CVE-2011-2484, CVE-2011-2491, CVE-2011-2492, CVE-2011-2495, CVE-2011-2496, CVE-2011-2497, CVE-2011-2517, CVE-2011-2525, CVE-2011-2700, CVE-2011-2723, CVE-2011-2905, CVE-2011-2909, CVE-2011-2918, CVE-2011-2928, CVE-2011-3188, CVE-2011-3191
MD5 | 9318148db756c5f402f4dfdd1f2988ea
Debian Security Advisory 2303-1
Posted Sep 9, 2011
Authored by Debian | Site debian.org

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.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2011-1020, CVE-2011-1576, CVE-2011-2484, CVE-2011-2491, CVE-2011-2492, CVE-2011-2495, CVE-2011-2496, CVE-2011-2497, CVE-2011-2517, CVE-2011-2525, CVE-2011-2700, CVE-2011-2723, CVE-2011-2905, CVE-2011-2909, CVE-2011-2918, CVE-2011-2928, CVE-2011-3188, CVE-2011-3191
MD5 | 917e363aeecf249e485568a28a642067
Red Hat Security Advisory 2011-1163-01
Posted Aug 16, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-1163-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. This update includes backported fixes for two security issues. These issues only affected users of Red Hat Enterprise Linux 5.6 Extended Update Support, as they have already been addressed for users of Red Hat Enterprise Linux 5 in the 5.7 update, RHSA-2011:1065. A flaw was found in the way the Xen hypervisor implementation handled instruction emulation during virtual machine exits. A malicious user-space process running in an SMP guest could trick the emulator into reading a different instruction than the one that caused the virtual machine to exit. An unprivileged guest user could trigger this flaw to crash the host. This only affects systems with both an AMD x86 processor and the AMD Virtualization extensions enabled.

tags | advisory, x86, kernel
systems | linux, redhat
advisories | CVE-2011-1780, CVE-2011-2525
MD5 | e1090d70f9e546a2757bc368d7ac5e78
Red Hat Security Advisory 2011-1065-01
Posted Jul 21, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-1065-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Xen hypervisor implementation handled instruction emulation during virtual machine exits. A malicious user-space process running in an SMP guest could trick the emulator into reading a different instruction than the one that caused the virtual machine to exit. An unprivileged guest user could trigger this flaw to crash the host. This only affects systems with both an AMD x86 processor and the AMD Virtualization extensions enabled.

tags | advisory, x86, kernel
systems | linux, redhat
advisories | CVE-2011-1780, CVE-2011-2525, CVE-2011-2689
MD5 | e6d294254105f97ce001fb30751bc425
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