oss-sec mailing list archives
Re: CVE request: kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array
From: "Eugene Teo" <eugeneteo () kernel sg>
Date: Fri, 21 Nov 2008 10:26:26 +0800
Hi Steve, On Fri, Nov 21, 2008 at 9:59 AM, Steven M. Christey <coley () linus mitre org> wrote:
On Wed, 19 Nov 2008, Eugene Teo wrote:If the write operation fails, the device won't be able to decode audio signals properly, so on further analysis, we probably don't need a CVE name for this. Take note.Does this mean, roughly, that this write only occurs into a different portion of a larger contiguous buffer, so it affects audio processing (e.g. throwing an error) or parsing, but otherwise can't be used to affect other memory locations outside that buffer?
To be honest, I'm not entirely familiar with the bug. I have Cc'ed Mauro who is the maintainer of the driver, and he should be able to share with us more about it. Mauro, can you explain to us the implications of not including the "V4L/DVB (9621): Avoid writing outside shadow.bytes[] array" fix, and if it has a security consequence? Thanks, Eugene
Current thread:
- CVE request: kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array Eugene Teo (Nov 16)
- Re: CVE request: kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array Eugene Teo (Nov 18)
- Re: CVE request: kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array Steven M. Christey (Nov 20)
- Re: CVE request: kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array Eugene Teo (Nov 20)
- Re: CVE request: kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array Mauro Carvalho Chehab (Nov 21)
- Re: CVE request: kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array Steven M. Christey (Nov 20)
- Re: CVE request: kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array Eugene Teo (Nov 18)