oss-sec mailing list archives
Re: CVE request: v86d: Failure to validate netlink message sender
From: Josh Bressers <bressers () redhat com>
Date: Mon, 28 Feb 2011 15:53:44 -0500 (EST)
Please use CVE-2011-1070 Thanks. -- JB ----- Original Message -----
Versions of the v86d userspace helper for the Linux uvesafb driver before 0.1.10 did not verify that received netlink messages were sent by the kernel, allowing unprivileged users to manipulate the video mode and potentially other consequences. v86d executes video BIOS code with access to /dev/mem in response to netlink messages, using either vm86 mode or an x86 emulator, depending on configuration. I an unclear on whether it is possible to e.g. crash the machine or escalate privileges by spoofing requests, or only to mess with the video card. References: http://repo.or.cz/w/v86d.git/commit/f9abfd412639286c3143e93e8ba2c9598dfba640
Current thread:
- CVE request: v86d: Failure to validate netlink message sender Nelson Elhage (Feb 25)
- Re: CVE request: v86d: Failure to validate netlink message sender Josh Bressers (Feb 28)