oss-security - CVE request: kernel: alpha: fix several security issues

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Message-ID: <4DF5A1CC.60101@redhat.com>
Date: Mon, 13 Jun 2011 13:36:12 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
CC: "Steven M. Christey" <coley@...us.mitre.org>
Subject: CVE request: kernel: alpha: fix several security issues

https://lkml.org/lkml/2011/6/11/87; from Dan Rosenberg.

1. Signedness issue in osf_getdomainname allows copying out-of-bounds
kernel memory to userland.

2. Signedness issue in osf_sysinfo allows copying large amounts of
kernel memory to userland.

3. Typo (?) in osf_getsysinfo bounds minimum instead of maximum copy
size, allowing copying large amounts of kernel memory to userland.

4. Usage of user pointer in osf_wait4 while under KERNEL_DS allows
privilege escalation via writing return value of sys_wait4 to kernel
memory.

I didn't investigate further.

Thanks, Eugene

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