Date: Wed, 15 Dec 2010 12:00:59 +0100 From: Marcus Meissner <meissner@...e.de> To: OSS Security List <oss-security@...ts.openwall.com> Cc: stable@...nel.org, security@...nel.org Subject: CVE Request: local privilege escalation via /sys/kernel/debug/acpi/custom_method Hi, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;h=ed3aada1bf34c5a9e98af167f125f8a740fc726a changes /sys/kernel/debug/acpi/custom_method from -w--w--w- to -w-------. This custom_method file allows to inject custom ACPI methods into the ACPI interpreter tables. This control file was introduced with world writeable permissions in Linux Kernel 2.6.33. Fix is in 2.6.37rc and the 22.214.171.124 stable release so far. I would say that privilege escalation is possible. Ciao, Marcus
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