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CVE-2012-3375

Status Candidate

Overview

The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.

Related Files

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
MD5 | c6958da0516ad29999afbe85cd2acea0
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
MD5 | 02e3ab665f99c2becbff7af3f76da4d5
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
MD5 | 643e40ef4808b43a2dda3fe2a84ff6d9
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
MD5 | af2ef686a035e339e802557747aba3df
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
MD5 | 135d74622b0eb63c6f412c8920b6b530
Red Hat Security Advisory 2012-1150-01
Posted Aug 9, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1150-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A memory leak flaw was found in the way the Linux kernel's memory subsystem handled resource clean up in the mmap() failure path when the MAP_HUGETLB flag was set. A local, unprivileged user could use this flaw to cause a denial of service. A flaw was found in the way the Linux kernel's Event Poll subsystem handled resource clean up when an ELOOP error code was returned. A local, unprivileged user could use this flaw to cause a denial of service.

tags | advisory, denial of service, kernel, local, memory leak
systems | linux, redhat
advisories | CVE-2012-2390, CVE-2012-3375
MD5 | dc6120a3346e7ea6cef0c53a34f7f4b5
Red Hat Security Advisory 2012-1061-01
Posted Jul 10, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1061-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. The fix for CVE-2011-1083 introduced a flaw in the way the Linux kernel's Event Poll subsystem handled resource clean up when an ELOOP error code was returned. A local, unprivileged user could use this flaw to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, redhat
advisories | CVE-2012-3375
MD5 | 72a54690264fdb337c3c973341617bd2
Linux Kernel Local Denial Of Service
Posted Jul 5, 2012
Authored by Yurij M. Plotnikov

The Linux kernel suffers from a local denial of service vulnerability in fs/eventpoll.c.

tags | exploit, denial of service, kernel, local
systems | linux
advisories | CVE-2012-3375
MD5 | f6574393e9beb9c5f60b53d273876750
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