0d5695983e
[subset] fixes dangling object_t issue in FeatureVariationRecord
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Fixes https://crbug.com/oss-fuzz/21560
revert () does not clean up useless object_t. Adjust the order of
subsetting substitutions and conditions to avoid dangling object_t.
2020-04-06 13:41:33 +04:30
57b7de032f
[subset] Fail ClassDefFormat1 serialization if no space available
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Fixes https://crbug.com/oss-fuzz/21580
2020-04-05 17:38:04 +04:30
014e038b2c
[subset] Bail out of context lookup expansion once the lookup limit is encountered.
2020-04-01 11:14:41 +04:30
5d345d0cd1
[subset] Limit the number of lookup indices processed subsetting Feature.
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> Also, remove two unnessecary full iterations of the lookup index iterator during serialization of the index array. Fixes fuzzer found timeout.
2020-04-01 11:13:05 +04:30
96d792ae80
[avar] Prevent mul overflow
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Fixes https://crbug.com/oss-fuzz/21350
2020-03-26 15:01:14 +00:00
4ad686b9c0
[subset] fix fuzzer timeout in layout closure
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Bail out of chain context lookup expansion once the lookup limit is encountered.
2020-03-26 06:32:28 +00:00
430bf69653
Add potentially crashing font as a fuzzer seed.
2020-03-14 00:55:47 +03:30
834a224a50
[subset] Put a limit on the number of lookup indices that can be visited during closures
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Fixes https://crbug.com/oss-fuzz/21025
2020-03-12 13:32:36 +03:30
0d729b4b72
[avar] Fix out-of-bound read when input is bigger than all the coords
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'i' shouldn't become equal to array's length which as the increament
is happened at end of the loop, if the input is bigger than all the
table coords, it will be equal to array's length.
Fixes https://crbug.com/oss-fuzz/21092
2020-03-07 13:20:41 +03:30
446d1e3bbc
[fuzz] Add more of fixed cases
2020-03-05 00:49:03 +03:30
99b5b3f1b1
[gvar] Make sure TupleVarHeader has the needed size
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Fixes https://crbug.com/oss-fuzz/21026
2020-03-04 12:43:26 +03:30
6543d166fd
[fuzz] Remove the not yet fixed timeout, going to investigate
2020-03-03 21:39:22 +03:30
2bbf1c8673
[fuzz] Add more of supposed to already be fixed cases from Chromium bug tracker
2020-03-03 21:39:22 +03:30
f253f06cf3
[fuzz] Add another fixed case
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https://crbug.com/oss-fuzz/14626
another numerous subtables count which is fixed by d38360397
2020-03-03 19:12:04 +03:30
d383603976
Limit OT::Lookup subtables ( #2219 )
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Fixes https://crbug.com/oss-fuzz/13943
2020-03-02 22:41:08 +03:30
29efd964f2
[fuzz] Add cases that marked as wontfix
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Let's see if they were really false alarms, if so, let's just have them.
2020-03-02 14:22:29 +03:30
5ab50eebd7
collect_unicodes() with clamp, calling add_range()
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Use add_range instead an inner loop, clamp its input number by
number of glyphs a face has.
Even the face cmap12 and 13 have 32-bit hb_codepoint_t, which is here
used to make timeout, face's maxp has 16-bit gid limitation at least for now,
using that makes sure we both fix and the timeout and don't need to change
much things here also in order to support 32-bit gids also someday.
Fixes #2204
2020-02-29 13:02:29 +03:30
410b4881d0
[subset] Add fuzzer timeout testcase.
2020-02-28 16:10:14 -08:00
e57ced5fc0
[gvar] Add other possibly fixed fuzzer case
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Speculatively should've been fixed by 61208401https://crbug.com/oss-fuzz/20924 related
2020-02-28 23:29:05 +03:30
758fda728b
[glyf] Don't accept gids higher than maxp's glyphs number
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This specially becomes concerning on sub-components where a gvar table
that is sanitized using maxp's glyphs number overflows when a high gid
accepted here goes to it, maybe an additional check can be put there
also, this however feels to be enough.
Fixes https://crbug.com/oss-fuzz/20944
2020-02-28 23:19:06 +03:30
e90213868b
Revert "collect_unicodes() to check gid < num_glyphs with cmap 12"
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Didn't fix the case actually, making bots to fail.
This reverts commit 15b43a4104
2020-02-28 21:24:51 +03:30
61208401f4
[gvar] Use hb_bytes_t.check_range instead having in house one
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And use TupleVarHeader calculated size for validity check.
Fixes https://crbug.com/oss-fuzz/20919 and possibly other gvar related issues
2020-02-28 21:09:07 +03:30
15b43a4104
collect_unicodes() to check gid < num_glyphs with cmap 12
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fixes #2204
2020-02-28 20:15:39 +03:30
8eba66c1c6
[gvar] Fix invalid memory access by refactoring GlyphVarData fetch logic
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Fixes https://crbug.com/oss-fuzz/20906
2020-02-27 20:26:54 +03:30
a99134c5be
add oss-fuzz 20886 test file
2020-02-26 09:58:03 -08:00
1c015d3e9f
[fuzz] minor fuzzer case move, oops
2020-02-12 19:19:37 +03:30
ff984ed3cd
Use multiplication to avoid undefined behaviour per clang
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Newer versions of MSVC with /we4146 don't like putting negative sign behind a
unsigned number as https://github.com/harfbuzz/harfbuzz/pull/2069
That however have made https://crbug.com/1050424 this complain:
src/hb-ot-color-sbix-table.hh:304:28: runtime error: negation of -2147483648 cannot be represented in type 'int';
cast to an unsigned type to negate this value to itself
which apparently can be fixed using this change.
Let's see if this won't make another ubsan complain!
2020-02-11 19:51:52 +03:30
e128f80278
parent 777ba47b50
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author ckitagawa <ckitagawa@chromium.org> 1579631743 -0500
committer ckitagawa <ckitagawa@chromium.org> 1580506176 -0500
[subset] Add CBLC support
2020-01-31 16:37:30 -05:00
ed857c4680
[subset] Add COLR support
2020-01-28 15:35:53 -05:00
0e4b2676bd
[subset] sbix fix missed offset is_null() check
2020-01-24 20:46:07 +03:30
7dc341fe74
[subset] Fix UBSAN issue in sbix
2020-01-23 23:46:22 +03:30
1ab3924b31
refix PR #2087 subset PairPos1
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also added oss-fuzz 20211 data fixed by this
2020-01-23 10:50:52 -08:00
b18cb5b5ee
Add second fixed test
2020-01-22 10:11:15 -08:00
8614a30bc9
[subset] Fix sbix fuzz problem
2020-01-22 10:11:15 -08:00
6bcf57eaa3
Simplify copy and add fuzzing coverage
2020-01-15 13:36:01 -08:00
dc03a993d0
Fix collect lookups logic of FeatureTableSubstitution ( #2097 )
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https://crbug.com/oss-fuzz/20036
2020-01-12 14:21:29 +03:30
a32ecc15ae
Fix collect lookups logic of FeatureVariationRecord
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As "Offset to a feature table substitution table, from beginning of the FeatureVariations table."
from https://docs.microsoft.com/en-us/typography/opentype/spec/chapter2 the record should
match its sanitize logic not the reverse way.
Fixes https://crbug.com/oss-fuzz/20021 and https://crbug.com/oss-fuzz/20022
2020-01-11 15:37:24 +03:30
d2ab1ec65b
fixes oss-fuzz 19978: Null-dereference READ ( #2091 )
2020-01-10 07:54:16 +03:30
257a197ae7
Fail serialize when map has incorrect value
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fixes https://crbug.com/oss-fuzz/19956
am not super happy with the fix, guess we should do some check
before the memcpy anyway as @blueshade7 thinks also,
so let's have it or revert it when we have a better approach for the case.
2020-01-09 22:55:45 +03:30
8ed46c3678
[fuzz] minor, add another already fixed case
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https://crbug.com/oss-fuzz/19907
2020-01-07 23:43:53 +03:30
341407f7a5
[fuzz] minor, upload another fixed case
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https://crbug.com/oss-fuzz/19878
2020-01-07 09:10:24 +03:30
7950beecfc
[subset] Fix null pointer dereference in hvar/vvar subset ( #2085 )
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Rest of the code assumes there is at least one subtable, lets return here if not.
* https://crbug.com/oss-fuzz/19827
* https://crbug.com/oss-fuzz/19847
2020-01-06 21:25:00 +03:30
64a45be519
[ubsan] Don't decrease pointer if match_glyph_data is null ( #2048 )
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Similar to fix on https://github.com/harfbuzz/harfbuzz/pull/2022
Fixes https://crbug.com/1023070
2019-11-09 12:25:33 +03:30
84b86a12d9
[fuzz] Remove just added case
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It didn't fail locally but on bots causing timeout, let remove for now.
2019-11-06 09:22:34 +03:30
a8f049c9a1
[fuzz] Upload testcase of https://crbug.com/oss-fuzz/18529
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Apparently false alarm per last comment and was ok locally also but lets have it here also
2019-11-05 22:26:36 +03:30
defe9b6da0
crash fix : Heap-buffer-overflow READ 2
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18513
2019-10-25 13:09:47 -07:00
b2fcca6e14
fuzzer crash fix
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https://oss-fuzz.com/testcase-detail/5643107869917184
2019-10-24 16:11:30 -07:00
95ab110cd9
Optimize intersects_array to fix fuzzer timeout.
2019-10-22 13:33:50 -07:00
b33a0d628e
fuzzer crash fix: Null-dereference WRITE
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18363
2019-10-22 01:01:08 +03:30
e766783152
[fuzz] Add https://crbug.com/oss-fuzz/17898 testcase
2019-10-21 22:17:06 +03:30
831daf4c76
Enforce HB_MAX_LANGSYS limit during layout subsetting.
2019-10-18 15:10:30 -07:00
d3b984d379
Revert in-house pow10 ( d80a3ea) and fix oss-fuzz/16922
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Probably can be fixed but merging it was wrong so let's revert.
2019-09-02 18:28:03 +04:30
875985cd48
[subset] Don't allow malicious fonts to insert unlimited table headers
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Fixes https://crbug.com/oss-fuzz/16810
2019-08-29 14:51:22 +04:30
269a120f13
[subset] Raise the bar in new vs old table size
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https://crbug.com/oss-fuzz/16740
This is actually an interesting thing that {h,v}mtx allocates as
much as a font pretends to have glyphs but the solution is not
that obvious as regular fonts can have less than actually containing
metrics in their {h,v}mtx. This change raises the bar to consider this
hmtx 4 byte for every glyph case.
Initially we wanted to just find things allocating crazy amount of
memory but having the assert has led to interesting findings also
so let's don't remove the assert and see what we can find elsewhere.
2019-08-25 20:37:00 +04:30
28aba780c4
[subset] Fix blob leak of _subset2 when returns early
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Fixes https://crbug.com/oss-fuzz/16639
2019-08-24 16:11:21 +04:30
b65bad18aa
[fuzz] Don't fail when blob is empty
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And enable more tests able to trig the issue.
2019-07-11 14:31:55 +04:30
8341c0b304
add test case file
2019-06-27 08:43:31 -07:00
90872a29ee
change assert(false) to failure
2019-06-11 12:42:28 -07:00
65e66a2d37
added test data
2019-06-03 16:31:41 -07:00
e1a5ce6aa6
Fix fuzzer crash testcase
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Add a check for stringOffSet(uint16) overflow,
return early if overflow happens
2019-05-24 15:26:20 -04:00
9ef241cd40
[test] Add one more
2019-05-20 11:38:02 -04:00
3efb7af7e2
[STAT] Fix sanitize condition
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Oops!
Fixes https://oss-fuzz.com/testcase-detail/5696825891225600
2019-05-20 11:37:16 -04:00
25a5b287f2
Fix sanitize fail of extension sublookups
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Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=960331
2019-05-10 16:03:20 -07:00
df237d2fe7
[test] Add https://crbug.com/oss-fuzz/14641 testcase
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As 503748d
2019-05-08 14:17:14 -07:00
62c6e17072
[test] Add crbug.com/oss-fuzz/14474 testcase
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Fixed at 6977a95f
2019-04-28 10:55:07 -07:00
ba0386060d
fix oss-fuzz issue 14345
2019-04-18 18:18:05 -04:00
ec2a5dc859
Use class templates for Null objects
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This allows partial-instantiating custom Null object for template Lookup<T>.
Before, this had to be handcoded per instantiation. Apparently I missed
adding one for AAT::ankr.lookupTable, so it was getting the wrong (generic)
null for Lookup object, which is wrong and unsafe.
Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=944346
2019-03-26 16:23:40 -07:00
bcb4e505d6
cff2 subset fuzzer issues ( #1619 )
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* add check to FDArray::serialize
* add test files
* fix off by one
2019-03-15 13:46:25 -07:00
6879efc2c1
[AAT] Fix anchor bound checking, again
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12532
Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=922303
2019-01-17 14:08:02 -05:00
91d774712f
[test] Add test for previous commit
2019-01-14 15:31:31 -05:00
7a6686a589
[AAT] Fix mort ContextualSubtable offset access
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12312
2019-01-14 15:09:14 -05:00
a3fa7d3336
[AAT] Fix ankr table access
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Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=918340
2019-01-14 14:37:36 -05:00
798e98c47b
[CFF] bad offset in Index ( #1476 )
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* Update hb-ot-cff-common.hh
* fix bug
* bummer fix wasn't hit. refix
* additional sanity check
* Added test cases for oss-fuzz issues 11805, 11806
2018-12-12 21:08:15 -05:00
bcb4ecaf68
[CFF] check out of range FD index ( #1477 )
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* add fd index checks to subr subsetter
also added oss-fuzz test case
* undid SubrSubsetParam::is_valid
because already validated by SubrClosures.valid
2018-12-12 20:36:01 -05:00
2941208f1e
[CFF] oss-fuzz issue 11690 ASSERT: substr.offset >= opStart ( #1461 )
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* fix oss-fuzz 11690: substr.offset >= opStart
detect recursive subroutine call & handle as error
* fix build failure
* add minimized test case for oss-fuzz 11690
* removed asserts
2018-12-11 15:21:24 -05:00
ae087d10c2
add minimized test case for oss-fuzz issue 11714
2018-12-05 21:47:34 -08:00
f95324a335
Merge pull request #1457 from harfbuzz/cff-varstore-sanitize
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[CFF] oss-fuzz issue 11713 (CFF2VariationStore::serialize)
2018-12-06 08:33:44 +03:30
9d8f3b0dfb
add minimized test case for oss-fuzz issue 11713
2018-12-05 17:14:51 -08:00
34e3ef8ff3
Merge branch 'master' into cff-subr-sanitize
2018-12-05 15:50:05 -08:00
72d8f76368
add minimized test case for oss-fuzz issue 11691
2018-12-05 15:49:11 -08:00
d9dabc00e9
Merge pull request #1454 from harfbuzz/cff-fixbcd
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[CFF] fix oss-fuzz issue 11674: parse_bcd
2018-12-05 15:39:34 -08:00
6708c5595f
fix oss-fuzz issue 11675 (ASSERT: count <= str.len)
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Also added an additional error check to avail ()
2018-12-05 12:51:18 -08:00
010e2ddb38
minimized test case for oss-fuzz issue 11674
2018-12-05 12:23:58 -08:00
79e7e3445e
Merge pull request #1449 from harfbuzz/cff-fixcharset
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[CFF] fix for oss-fuzz 11657: Charset overrun
2018-12-05 13:25:18 +03:30
cf4b7db6b1
Merge pull request #1448 from harfbuzz/cff-leak
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[CFF] fix leak: oss-fuzz 11662
2018-12-05 13:23:23 +03:30
32cc46c75a
[CFF] fix oss-fuzz issue 11670: NULL dereference ( #1450 )
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* guard against no subr access
* code tweak
* add minimized testcase for oss-fuzz 11670 (Null deference)
2018-12-05 09:02:34 +03:30
78f639b8bf
added minimized testcase for oss-fuzz issue 11657
2018-12-04 14:17:03 -08:00
b61f74f69a
added minimized test case for oss-fuzz issue 11662
2018-12-04 10:30:35 -08:00
9424e80526
added minimized test cases
2018-12-03 16:18:10 -08:00
84efe0438e
[aat] Fix division sign fallout
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Happened after 11d2f49af8
2018-12-02 12:39:14 -05:00
1204a247a5
[fuzzing] Add tests for previous commit
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11526
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11522
2018-11-24 09:49:21 -05:00
2c8188bf59
[kerx] Make sure subtables are non-zero-length
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11400
2018-11-22 22:02:19 -05:00
8982830d3e
[subset] add fuzzer testcase.
2018-11-22 21:30:01 -05:00
5212cd8af2
[fuzzing] Add new test
2018-11-12 14:25:18 -05:00
a549aa14a0
[kerx] Protect against stack underflow
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11367
2018-11-12 13:02:39 -05:00
752bd8a192
[kerx] Fix Format1 tupleKern sanitization
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11312
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11305
2018-11-10 21:13:32 -05:00
3a9fa8c026
[qsort] Fix O(N^2) behavior if all array elements are the same
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11327
Reported as https://github.com/noporpoise/sort_r/issues/7
2018-11-10 01:58:26 -05:00
c560ca9251
[fuzz] A new testcase
2018-11-03 13:03:36 +03:30
0af3d176a6
[sbix] Fix memory leak in early return
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11210
2018-10-30 17:05:28 +02:00
12058e44d1
[fuzzing] Add more test
2018-10-26 21:22:26 -07:00
Qunxin Liu
Ebrahim Byagowi
Garret Rieger
Michiharu Ariza
ckitagawa
ckitagawa-work
Michiharu Ariza
Behdad Esfahbod
Behdad Esfahbod
Khaled Hosny