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CVE-2012-2136

Status Candidate

Overview

The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5 does not properly validate a certain length value, which allows local users to cause a denial of service (heap-based buffer overflow and system crash) or possibly gain privileges by leveraging access to a TUN/TAP device.

Related Files

EMC VPLEX GeoSynchrony 5.2.1 Traversal / Session Timeout
Posted Mar 27, 2014
Site emc.com

EMC VPLEX GeoSynchrony versions 4.0 through 5.2.1 suffer from path traversal, timeout validity, session fixation, and various other vulnerabilities.

tags | advisory, vulnerability
advisories | CVE-2002-2443, CVE-2011-1044, CVE-2011-3389, CVE-2011-4110, CVE-2012-0814, CVE-2012-2136, CVE-2012-5166, CVE-2013-1667, CVE-2014-0632, CVE-2014-0633, CVE-2014-0634, CVE-2014-0635
SHA-256 | 865ebcefce882874598ff43ecc2a95087b307183385a9a725bb5ad0baf892e95
Ubuntu Security Notice USN-1598-1
Posted Oct 10, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1598-1 - An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges.

tags | advisory, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2012-2136
SHA-256 | 9e6e98f1d12d479aa751fca255131825ffe9ffe0e3735a640d668a1119355906
Ubuntu Security Notice USN-1539-1
Posted Aug 15, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1539-1 - An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. Ulrich Obergfell discovered an error in the Linux kernel's memory management subsystem on 32 bit PAE systems with more than 4GB of memory installed. A local unprivileged user could exploit this flaw to crash the system. Various other issues were also addressed.

tags | advisory, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2012-2136, CVE-2012-2373, CVE-2012-3375, CVE-2012-3400, CVE-2012-2136, CVE-2012-2373, CVE-2012-3375, CVE-2012-3400
SHA-256 | 5f1ac3455cca303b5f6aca689847449cc9dd5b0bb1082518a0a561ff16855b85
Ubuntu Security Notice USN-1538-1
Posted Aug 15, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1538-1 - An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS) protocol implementation. A local, unprivileged user could use this flaw to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, root, protocol
systems | linux, ubuntu
advisories | CVE-2012-2136, CVE-2012-2372, CVE-2012-2390, CVE-2012-2136, CVE-2012-2372, CVE-2012-2390
SHA-256 | b1621261e387c4866383d13410d8707d10ed518cc87e960bb61a013fc5ba3fed
Ubuntu Security Notice USN-1535-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1535-1 - An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. An error was discovered in the Linux kernel's memory subsystem (hugetlb). An unprivileged local user could exploit this flaw to cause a denial of service (crash the system). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2012-2136, CVE-2012-2390, CVE-2012-2136, CVE-2012-2390
SHA-256 | 45a19fe276e735d415cd1a01153d8aaa18717189a56c96cfbb4d88c50dcddecc
Ubuntu Security Notice USN-1534-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1534-1 - An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. An error was discovered in the Linux kernel's memory subsystem (hugetlb). An unprivileged local user could exploit this flaw to cause a denial of service (crash the system). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2012-2136, CVE-2012-2390, CVE-2012-2136, CVE-2012-2390
SHA-256 | 5ac3c3a851b0545ddc164371fc5ad555f111ce1cb5d2b35278736b9365d66c52
Ubuntu Security Notice USN-1533-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1533-1 - An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. Ulrich Obergfell discovered an error in the Linux kernel's memory management subsystem on 32 bit PAE systems with more than 4GB of memory installed. A local unprivileged user could exploit this flaw to crash the system. Various other issues were also addressed.

tags | advisory, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2012-2136, CVE-2012-2373, CVE-2012-3375, CVE-2012-3400, CVE-2012-2136, CVE-2012-2373, CVE-2012-3375, CVE-2012-3400
SHA-256 | 5082c7fb8f2daf682cfc7378525c60b86fbdff934daf85b48b38b2fb8e3e9935
Ubuntu Security Notice USN-1532-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1532-1 - An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. Ulrich Obergfell discovered an error in the Linux kernel's memory management subsystem on 32 bit PAE systems with more than 4GB of memory installed. A local unprivileged user could exploit this flaw to crash the system. Various other issues were also addressed.

tags | advisory, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2012-2136, CVE-2012-2373, CVE-2012-3375, CVE-2012-3400, CVE-2012-2136, CVE-2012-2373, CVE-2012-3375, CVE-2012-3400
SHA-256 | d3bc5635bb481cc6a0e193e3e7c9e9b74aef3286e675b23aa6d47538518c4356
Ubuntu Security Notice USN-1531-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1531-1 - An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS) protocol implementation. A local, unprivileged user could use this flaw to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, root, protocol
systems | linux, ubuntu
advisories | CVE-2012-2136, CVE-2012-2372, CVE-2012-2390, CVE-2012-2136, CVE-2012-2372, CVE-2012-2390
SHA-256 | 02e8241e6bf305aa37396622b58304e85b75430ea8d557a9abfcab876e316fe7
Ubuntu Security Notice USN-1530-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1530-1 - Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-4131, CVE-2012-2123, CVE-2012-2136, CVE-2012-2313, CVE-2012-2319, CVE-2012-2372, CVE-2012-2375, CVE-2011-4131, CVE-2012-2123, CVE-2012-2136, CVE-2012-2313, CVE-2012-2319, CVE-2012-2372, CVE-2012-2375
SHA-256 | 1182d44ab2f37a093d4b3adc952b3b7cbf5002be8d366863ba89dea8ab42ea57
Ubuntu Security Notice USN-1529-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1529-1 - A flaw was discovered in the Linux kernel's macvtap device driver, which is used in KVM (Kernel-based Virtual Machine) to create a network bridge between host and guest. A privileged user in a guest could exploit this flaw to crash the host, if the vhost_net module is loaded with the experimental_zcopytx option enabled. An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. Various other issues were also addressed.

tags | advisory, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2012-2119, CVE-2012-2136, CVE-2012-2137, CVE-2012-2372, CVE-2012-2373, CVE-2012-3364, CVE-2012-3375, CVE-2012-3400, CVE-2012-2119, CVE-2012-2136, CVE-2012-2137, CVE-2012-2372, CVE-2012-2373, CVE-2012-3364, CVE-2012-3375, CVE-2012-3400
SHA-256 | e952789bbefd461e15d40316c4fbdd6eac86480773556aab5265687085c3d735
Ubuntu Security Notice USN-1514-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1514-1 - A flaw was discovered in the Linux kernel's macvtap device driver, which is used in KVM (Kernel-based Virtual Machine) to create a network bridge between host and guest. A privileged user in a guest could exploit this flaw to crash the host, if the vhost_net module is loaded with the experimental_zcopytx option enabled. An error was discovered in the Linux kernel's network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. Various other issues were also addressed.

tags | advisory, kernel, local, root
systems | linux, ubuntu
advisories | CVE-2012-2119, CVE-2012-2136, CVE-2012-2137, CVE-2012-2372, CVE-2012-2373, CVE-2012-3364, CVE-2012-3375, CVE-2012-3400, CVE-2012-2119, CVE-2012-2136, CVE-2012-2137, CVE-2012-2372, CVE-2012-2373, CVE-2012-3364, CVE-2012-3375, CVE-2012-3400
SHA-256 | e1c10bba69a8a49308a988c308242a9abe24b1f355d1cf1a0609f14097f65f5c
Red Hat Security Advisory 2012-1087-01
Posted Jul 17, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1087-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issue: It was found that the data_len parameter of the sock_alloc_send_pskb() function in the Linux kernel's networking implementation was not validated before use. A local user with access to a TUN/TAP virtual interface could use this flaw to crash the system or, potentially, escalate their privileges. Note that unprivileged users cannot access TUN/TAP devices until the root user grants them access.

tags | advisory, kernel, local, root
systems | linux, redhat
advisories | CVE-2012-2136
SHA-256 | 7e8f5f94bf72960a538fad4d42725e9aea5da69c5f9846af245aac6310ae2bd3
Red Hat Security Advisory 2012-0743-01
Posted Jun 18, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0743-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. A local, unprivileged user could use an integer overflow flaw in drm_mode_dirtyfb_ioctl() to cause a denial of service or escalate their privileges. A buffer overflow flaw was found in the macvtap device driver, used for creating a bridged network between the guest and the host in KVM environments. A privileged guest user in a KVM guest could use this flaw to crash the host. Note: This issue only affected hosts that have the vhost_net module loaded with the experimental_zcopytx module option enabled, and that also have macvtap configured for at least one guest.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, redhat
advisories | CVE-2012-0044, CVE-2012-1179, CVE-2012-2119, CVE-2012-2121, CVE-2012-2123, CVE-2012-2136, CVE-2012-2137, CVE-2012-2372, CVE-2012-2373
SHA-256 | 2480f3d6a1b6962283dd9e04ff5f1211daab9bed3388bb442c0b82afde24b21d
Red Hat Security Advisory 2012-0690-01
Posted May 29, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0690-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issue: It was found that the data_len parameter of the sock_alloc_send_pskb() function in the Linux kernel's networking implementation was not validated before use. A local user with access to a TUN/TAP virtual interface could use this flaw to crash the system or, potentially, escalate their privileges. Note that unprivileged users cannot access TUN/TAP devices until the root user grants them access.

tags | advisory, kernel, local, root
systems | linux, redhat
advisories | CVE-2012-2136
SHA-256 | 42f48969c33d14b422067a511d25a3ed7b2209d984bf368ba28a35ce8df3755b
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