bugThe FreeType Project - Bugs: bug #46202, NULL deref in T1_Get_MM_Var

 
 

bug #46202: NULL deref in T1_Get_MM_Var

Submitted by:  Kostya Serebryany <kcc>
Submitted on:  Tue 13 Oct 2015 05:07:00 PM UTC  
 
Severity: 3 - NormalItem Group: None
Status: FixedPrivacy: Public
Assigned to: Werner LEMBERG <wl>Open/Closed: Closed
Planned Release: 2.6.2

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Tue 13 Oct 2015 06:43:58 PM UTC, comment #2:

Fixed in git. Thanks for the report.

Werner LEMBERG <wl>
Project AdministratorIn charge of this item.
Tue 13 Oct 2015 05:09:19 PM UTC, comment #1:

Ah, I see you've committed http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=bdb56bba866ddd3532bce008156bd3763614aa0e
that extends the target function. Cool!

Kostya Serebryany <kcc>
Project Member
Tue 13 Oct 2015 05:07:00 PM UTC, original submission:

The libFuzzer bot has found a new crash.

Not sure if this is a regression or an old bug discovered just now. Please confirm.

==19204==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x000000428da0 bp 0x7ffe0c58a270 sp 0x7ffe0c5899f0 T0)
#0 0x428d9f in strcmp
#1 0x5b8d5f in T1_Get_MM_Var src/type1/t1load.c:339:12
#2 0x5556bb in FT_Get_MM_Var src/base/ftmm.c:112:17
#3 0x4d91dd in setIntermediateAxis(FT_FaceRec_*)
#4 0x4d8c1a in LLVMFuzzerTestOneInput

Repro attached.

Kostya Serebryany <kcc>
Project Member

 

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Attached Files
file #35185:  crash-ca2b9b7e0a30afc8d497f0e0b43d713812377abb added by kcc (12KiB - application/octet-stream)

 

Depends on the following items: None found

Items that depend on this one: None found

 

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  • -unavailable- added by wl (Posted a comment)
  • -unavailable- added by kcc (Submitted the item)
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    Follow 5 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Tue 13 Oct 2015 06:43:58 PM UTCwlStatusNone=>Fixed
      Assigned toNone=>wl
      Open/ClosedOpen=>Closed
      Planned ReleaseNone=>2.6.2
    Tue 13 Oct 2015 05:07:00 PM UTCkccAttached File-=>Added crash-ca2b9b7e0a30afc8d497f0e0b43d713812377abb, #35185

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