oss-security February 2011 archive
Main Archive Page > Month Archives  > oss-security archives
oss-security: Re: [oss-security] CVE request - kernel: xfs infol

Re: [oss-security] CVE request - kernel: xfs infoleak

From: Josh Bressers <bressers_at_nospam>
Date: Wed Feb 16 2011 - 13:46:22 GMT
To: oss-security@lists.openwall.com

----- Original Message -----
> From Dan R0s3nbug5, "The FSGEOMETRY_V1 ioctl (and its compat equivalent)
> calls out to xfs_fs_geometry() with a version number of 3. This code
> path does not fill in the logsunit member of the passed xfs_fsop_geom_t,
> leading to the leaking of four bytes of uninitialized stack data to
> potentially unprivileged callers. Since all other members are filled in
> all code paths and there are no padding bytes in this structure, it's
> safe to avoid an expensive memset() in favor of just clearing this one
> field."
>
> https://patchwork.kernel.org/patch/555461/
> https://bugzilla.redhat.com/show_bug.cgi?id=677260
>

Please use CVE-2011-0711.

Thanks.

-- JB