Headline
CVE-2011-2518: security - Re: CVE request: kernel: tomoyo: oops in tomoyo_mount_acl()
The tomoyo_mount_acl function in security/tomoyo/mount.c in the Linux kernel before 2.6.39.2 calls the kern_path function with arguments taken directly from a mount system call, which allows local users to cause a denial of service (OOPS) or possibly have unspecified other impact via a NULL value for the device name.
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Date: Fri, 01 Jul 2011 17:00:42 +0800 From: Eugene Teo <eugene@…hat.com> To: oss-security@…ts.openwall.com, “Steven M. Christey” <coley@…us.mitre.org> Subject: Re: CVE request: kernel: tomoyo: oops in tomoyo_mount_acl()
On 06/30/2011 06:13 PM, Petr Matousek wrote:
Description of problem: In tomoyo_mount_acl() since 2.6.36, kern_path() was called without checking dev_name != NULL. As a result, an unprivileged user can trigger oops by issuing mount(NULL, "/", "ext3", 0, NULL) request.
Upstream fix: 4e78c724d47e2342aa8fde61f6b8536f662f795f
Use CVE-2011-2518.
Eugene
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