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CVE-2012-2745

Status Candidate

Overview

The copy_creds function in kernel/cred.c in the Linux kernel before 3.3.2 provides an invalid replacement session keyring to a child process, which allows local users to cause a denial of service (panic) via a crafted application that uses the fork system call.

Related Files

Ubuntu Security Notice USN-1606-1
Posted Oct 12, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1606-1 - A flaw was found in how the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem handled MSI (Message Signaled Interrupts). A local unprivileged user could exploit this flaw to cause a denial of service or potentially elevate privileges. A flaw was found in how the Linux kernel passed the replacement session keyring to a child process. An unprivileged local user could exploit this flaw to cause a denial of service (panic). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-2137, CVE-2012-2745, CVE-2012-2137, CVE-2012-2745
SHA-256 | 9a3ba44876b1d362029c9288e940d7dfe23310e5040c7750391867cf06ca5d06
Ubuntu Security Notice USN-1597-1
Posted Oct 6, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1597-1 - A flaw was found in how the Linux kernel passed the replacement session keyring to a child process. An unprivileged local user could exploit this flaw to cause a denial of service (panic).

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-2745
SHA-256 | 258d218672b9c92001a7e024f697e1f4e71142d8eeeed7c16edc26c831b5234b
Ubuntu Security Notice USN-1574-1
Posted Sep 20, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1574-1 - A flaw was found in how the Linux kernel passed the replacement session keyring to a child process. An unprivileged local user could exploit this flaw to cause a denial of service (panic). Ben Hutchings reported a flaw in the Linux kernel with some network drivers that support TSO (TCP segment offload). A local or peer user could exploit this flaw to to cause a denial of service. Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel implementation of RDS sockets. A local unprivileged user could potentially use this flaw to read privileged information from the kernel. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2012-2745, CVE-2012-3412, CVE-2012-3430, CVE-2012-3511, CVE-2012-2745, CVE-2012-3412, CVE-2012-3430, CVE-2012-3511
SHA-256 | 36e2cfb03bcfcfdfde68b1b5d6be895b43dbaadb1492d17096697dd233bd3610
Ubuntu Security Notice USN-1567-1
Posted Sep 14, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1567-1 - A flaw was found in how the Linux kernel passed the replacement session keyring to a child process. An unprivileged local user could exploit this flaw to cause a denial of service (panic). Ben Hutchings reported a flaw in the Linux kernel with some network drivers that support TSO (TCP segment offload). A local or peer user could exploit this flaw to to cause a denial of service. Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel implementation of RDS sockets. A local unprivileged user could potentially use this flaw to read privileged information from the kernel. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2012-2745, CVE-2012-3412, CVE-2012-3430, CVE-2012-3511, CVE-2012-2745, CVE-2012-3412, CVE-2012-3430, CVE-2012-3511
SHA-256 | a552c2e69546f1e16f0319e244f33fe12786e003870c90d2f57d54f57df37dd4
Red Hat Security Advisory 2012-1064-01
Posted Jul 10, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1064-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. A NULL pointer dereference flaw was found in the nf_ct_frag6_reasm() function in the Linux kernel's netfilter IPv6 connection tracking implementation. A remote attacker could use this flaw to send specially-crafted packets to a target system that is using IPv6 and also has the nf_conntrack_ipv6 kernel module loaded, causing it to crash.

tags | advisory, remote, kernel
systems | linux, redhat
advisories | CVE-2012-2744, CVE-2012-2745
SHA-256 | 0852eec4bdd3e4bd9f3b62617cce1230392a218607fdd7e60df4b80eb3789675
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