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Ubuntu Security Notice USN-1445-1

Posted May 18, 2012

Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1445-1 - A flaw was found in the Linux's kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service. A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to 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, denial of service, kernel, local

systems | linux, ubuntu

advisories | CVE-2011-4086, CVE-2012-1601, CVE-2012-2123, CVE-2011-4086, CVE-2012-1601, CVE-2012-2123

SHA-256 | 7d0b2e8d139bbdf7e42fc75ff657d5dc4fdf2c134147403f44f2f71576098f00

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