what you don't know can hurt you

Apple Intel GPU Driver Use-After-Free / Double-Delete

Apple Intel GPU Driver Use-After-Free / Double-Delete
Posted Oct 19, 2018
Authored by Google Security Research, ianbeer

The Apple Intel GPU driver suffers from use-after-free and double-delete issues due to bad locking.

tags | advisory
systems | apple
advisories | CVE-2018-4334
MD5 | b351e27cbcb6569d7e176048b1d1639f

Apple Intel GPU Driver Use-After-Free / Double-Delete

Change Mirror Download
UaF/Double-delete due to bad locking in Apple Intel GPU driver 

CVE-2018-4334


This PoC file might look familiar; this bug is a trivial variant of CVE-2016-1744 (Apple bug id 635599405.)

That report showed the bug in the unmap_user_memory external methods; a variant also exists
in the map_user_memory external methods.

The intel graphics drivers have their own hash table type IGHashTable which isn't thread-safe.

map_user_memory manipulates an IGHashTable without locking leading to memory issues (eg UaFs and/or double-frees)

tested on MacOS 10.13.5 (17F77) on MacBookPro10,1



Found by: ianbeer

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

April 2020

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Apr 1st
    60 Files
  • 2
    Apr 2nd
    20 Files
  • 3
    Apr 3rd
    15 Files
  • 4
    Apr 4th
    5 Files
  • 5
    Apr 5th
    5 Files
  • 6
    Apr 6th
    27 Files
  • 7
    Apr 7th
    0 Files
  • 8
    Apr 8th
    0 Files
  • 9
    Apr 9th
    0 Files
  • 10
    Apr 10th
    0 Files
  • 11
    Apr 11th
    0 Files
  • 12
    Apr 12th
    0 Files
  • 13
    Apr 13th
    0 Files
  • 14
    Apr 14th
    0 Files
  • 15
    Apr 15th
    0 Files
  • 16
    Apr 16th
    0 Files
  • 17
    Apr 17th
    0 Files
  • 18
    Apr 18th
    0 Files
  • 19
    Apr 19th
    0 Files
  • 20
    Apr 20th
    0 Files
  • 21
    Apr 21st
    0 Files
  • 22
    Apr 22nd
    0 Files
  • 23
    Apr 23rd
    0 Files
  • 24
    Apr 24th
    0 Files
  • 25
    Apr 25th
    0 Files
  • 26
    Apr 26th
    0 Files
  • 27
    Apr 27th
    0 Files
  • 28
    Apr 28th
    0 Files
  • 29
    Apr 29th
    0 Files
  • 30
    Apr 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2016 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close