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Fix some possible low-memory failures in regexp compilation.

author Tom Lane <tgl@sss.pgh.pa.us>

2015年8月12日 04:48:11 +0000 (00:48 -0400)

committer Tom Lane <tgl@sss.pgh.pa.us>

2015年8月12日 04:48:11 +0000 (00:48 -0400)

commit 8a0258c31808c514755e3bba03cb052084c4887c

tree 1f42eed6f6c314d012b28ec521e87e9b032307de tree

parent 68fa28f77146653f1fcaa530d2f2f161bf5de479 commit | diff

Fix some possible low-memory failures in regexp compilation.

newnfa() failed to set the regex error state when malloc() fails.
Several places in regcomp.c failed to check for an error after calling
subre(). Each of these mistakes could lead to null-pointer-dereference
crashes in memory-starved backends.

Report and patch by Andreas Seltenreich. Back-patch to all branches.

src/backend/regex/regc_nfa.c diff | blob | blame | history

src/backend/regex/regcomp.c diff | blob | blame | history

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