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Fix ZSTD_execSequence() edge case

dev
Nick Terrell 2016-10-10 16:19:21 -07:00
parent f405b8acbe
commit 7158584399
5 changed files with 25 additions and 0 deletions
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5
lib/decompress/zstd_decompress.c
View File

@ -878,7 +878,12 @@ size_t ZSTD_execSequence(BYTE* op,
op = oLitEnd + length1; op = oLitEnd + length1;
sequence.matchLength -= length1; sequence.matchLength -= length1;
match = base; match = base;
if (op > oend_w) {
memmove(op, match, sequence.matchLength);
return sequenceLength;
}
} } } }
/* Requirement: op <= oend_w */
/* match within prefix */ /* match within prefix */
if (sequence.offset < 8) { if (sequence.offset < 8) {

5
lib/legacy/zstd_v04.c
View File

@ -3107,8 +3107,13 @@ static size_t ZSTD_execSequence(BYTE* op,
op = oLitEnd + length1; op = oLitEnd + length1;
sequence.matchLength -= length1; sequence.matchLength -= length1;
match = base; match = base;
if (op > oend_8) {
memmove(op, match, sequence.matchLength);
return sequenceLength;
}
} }
} }
/* Requirement: op <= oend_8 */
/* match within prefix */ /* match within prefix */
if (sequence.offset < 8) if (sequence.offset < 8)

5
lib/legacy/zstd_v05.c
View File

@ -3312,7 +3312,12 @@ static size_t ZSTDv05_execSequence(BYTE* op,
op = oLitEnd + length1; op = oLitEnd + length1;
sequence.matchLength -= length1; sequence.matchLength -= length1;
match = base; match = base;
if (op > oend_8) {
memmove(op, match, sequence.matchLength);
return sequenceLength;
}
} } } }
/* Requirement: op <= oend_8 */
/* match within prefix */ /* match within prefix */
if (sequence.offset < 8) { if (sequence.offset < 8) {

5
lib/legacy/zstd_v06.c
View File

@ -3466,7 +3466,12 @@ size_t ZSTDv06_execSequence(BYTE* op,
op = oLitEnd + length1; op = oLitEnd + length1;
sequence.matchLength -= length1; sequence.matchLength -= length1;
match = base; match = base;
if (op > oend_8) {
memmove(op, match, sequence.matchLength);
return sequenceLength;
}
} } } }
/* Requirement: op <= oend_8 */
/* match within prefix */ /* match within prefix */
if (sequence.offset < 8) { if (sequence.offset < 8) {

5
lib/legacy/zstd_v07.c
View File

@ -3690,7 +3690,12 @@ size_t ZSTDv07_execSequence(BYTE* op,
op = oLitEnd + length1; op = oLitEnd + length1;
sequence.matchLength -= length1; sequence.matchLength -= length1;
match = base; match = base;
if (op > oend_w) {
memmove(op, match, sequence.matchLength);
return sequenceLength;
}
} } } }
/* Requirement: op <= oend_w */
/* match within prefix */ /* match within prefix */
if (sequence.offset < 8) { if (sequence.offset < 8) {