Re: [Bug 64] Any user can trigger a panic in mmap with an overlapping mapping

2016-08-01 Thread Jesse Hertz
Yup, waiting a day or two is no problem, we’re happy to wait until you guys have a patch/errata ready :) > On Aug 1, 2016, at 3:23 PM, Tim Newsham wrote: > > Yup. Thank you! > > On Mon, Aug 1, 2016 at 9:17 AM, Bob Beck wrote: > >> And just to confirm tim, we're sorting out the nature of a m

Re: [Bug 64] Any user can trigger a panic in mmap with an overlapping mapping

2016-08-01 Thread Tim Newsham
Yup. Thank you! On Mon, Aug 1, 2016 at 9:17 AM, Bob Beck wrote: > And just to confirm tim, we're sorting out the nature of a minimal patch > for a possible errata, and we'll > need to get the errata signed. I don't anticipate this will be more than a > day or two if you can wait that long. > >

Re: [Bug 64] Any user can trigger a panic in mmap with an overlapping mapping

2016-08-01 Thread Bob Beck
And just to confirm tim, we're sorting out the nature of a minimal patch for a possible errata, and we'll need to get the errata signed. I don't anticipate this will be more than a day or two if you can wait that long. On Mon, Aug 1, 2016 at 1:09 PM, Mark Kettenis wrote: > > From: Jesse Hertz

Re: [Bug 64] Any user can trigger a panic in mmap with an overlapping mapping

2016-08-01 Thread Mark Kettenis
> From: Jesse Hertz > Date: Mon, 1 Aug 2016 14:38:19 -0400 > > Hi All, > > Is a fix for this in the works? We'd like to be able to point to a > fix before posting to oss-sec :) Hi Jesse, The fix suggested in the analysis has been committed, and we have committed two other fixes to prevent agai

Re: [Bug 64] Any user can trigger a panic in mmap with an overlapping mapping

2016-08-01 Thread Bob Beck
Hi Tim, Yes, a fix is being discussed ATM.. we'll let you know shortly I believe. On Mon, Aug 1, 2016 at 12:38 PM, Jesse Hertz wrote: > Hi All, > > Is a fix for this in the works? We’d like to be able to point to a fix > before posting to oss-sec :) > > Best, > -jh > > On Jul 28, 2016, at 8:58

Re: [Bug 64] Any user can trigger a panic in mmap with an overlapping mapping

2016-08-01 Thread Jesse Hertz
Hi All, Is a fix for this in the works? We’d like to be able to point to a fix before posting to oss-sec :) Best, -jh > On Jul 28, 2016, at 8:58 PM, Tim Newsham wrote: > > Hi, We just came across another issue that allows a user to crash the system > through mmap. Despite trying, we didn't

[Bug 64] Any user can trigger a panic in mmap with an overlapping mapping

2016-07-28 Thread Tim Newsham
Hi, We just came across another issue that allows a user to crash the system through mmap. Despite trying, we didn't notice any more serious privilege escalation opportunities. /* * mmap_dup_panic.c *Demonstrate a panic through the mmap system call. * * gcc -g mmap_dup_panic.c -o mmap_