kernel/git - git - PowerEL Git System

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Commit Graph

Author	SHA1	Message	Date
Junio C Hamano	6b763c424e	git-apply: do not read past the end of buffer When the preimage we are patching is shorter than what the patch text expects, we tried to match the buffer contents at the "original" line with the fragment in full, without checking we have enough data to match in the preimage. This caused the size of a later memmove() to wrap around and attempt to scribble almost the entire address space. Not good. The code that follows the part this patch touches tries to match the fragment with line offsets. Curiously, that code does not have the problem --- it guards against reading past the end of the preimage. Signed-off-by: Junio C Hamano <gitster@pobox.com>	18 years ago

Author

SHA1

Message

Date

Junio C Hamano

6b763c424e

git-apply: do not read past the end of buffer

When the preimage we are patching is shorter than what the patch
text expects, we tried to match the buffer contents at the
"original" line with the fragment in full, without checking we
have enough data to match in the preimage.  This caused the size
of a later memmove() to wrap around and attempt to scribble
almost the entire address space.  Not good.

The code that follows the part this patch touches tries to match
the fragment with line offsets.  Curiously, that code does not
have the problem --- it guards against reading past the end of
the preimage.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

18 years ago

1 Commits (3caf320ba8fc8277b5875fe306efbfa333b92487)