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Malformed font leads to crash in Apple's ATSUI [@AppendOTFeaturesFromTable]

VERIFIED FIXED

Status

()

Core
Graphics
--
critical
VERIFIED FIXED
7 years ago
5 years ago

People

(Reporter: posidron, Assigned: jfkthame)

Tracking

(Blocks: 1 bug, {verified1.9.2})

1.9.2 Branch
x86
Mac OS X
verified1.9.2
Points:
---
Dependency tree / graph

Firefox Tracking Flags

(blocking2.0 final+, status1.9.2 .13-fixed, status1.9.1 .16-fixed)

Details

Attachments

(3 attachments, 1 obsolete attachment)

(Reporter)

Description

7 years ago
Created attachment 476715 [details]
testcase

Table: b'GPOS'
Number of replaced values: 4
Offset:  39/0x000027	Value: ['7f', 'ff']
Offset:  45/0x00002d	Value: ['ff', 'ff', 'ff', 'ff']
Offset:  47/0x00002f	Value: ['7f', 'ff']
Offset:  52/0x000034	Value: ['80', '00', '00', '00']

ProductName:	Mac OS X
ProductVersion:	10.6.5
BuildVersion:	10H542
(Reporter)

Comment 1

7 years ago
Created attachment 476716 [details]
callstack
blocking2.0: --- → ?

Comment 2

7 years ago
Created attachment 477432 [details]
callstack on trunk with harfbuzz disabled

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b7pre) Gecko/20100921 Firefox/4.0b7pre

Running with harfbuzz disabled on 10.6.5 latest seed (10H542)
(Reporter)

Comment 3

7 years ago
Created attachment 478819 [details]
testcase

Attached is a new simplified testcase, callstack is the same.

Top Mode: replace
Sub Mode: table spread
Table: b'GSUB'
Number of values: 1
Offset:   55/0x000037  Value: ['ff', 'ff']
Attachment #476715 - Attachment is obsolete: true

Updated

7 years ago
Assignee: nobody → jdaggett
(Assignee)

Comment 4

7 years ago
This will be fixed by the OTS sanitizer (bug 527276).
Depends on: 527276
blocking2.0: ? → final+
(Assignee)

Updated

7 years ago
Assignee: jdaggett → jfkthame
Status: NEW → RESOLVED
Last Resolved: 7 years ago
status1.9.2: --- → .13-fixed
Resolution: --- → FIXED
Verified fixed in 1.9.2.13 (Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13pre) Gecko/20101118 Namoroka/3.6.13pre) using testcase. 1.9.2.12 crashes reliably with it and .13pre is unaffected.
Keywords: verified1.9.2
Status: RESOLVED → VERIFIED
status1.9.1: --- → .16-fixed
(Reporter)

Updated

5 years ago
Blocks: 750695
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