From: schwarze@mdocml.bsd.lv
To: source@mdocml.bsd.lv
Subject: mdocml: Closing a block validates it, which may end up deleting it, so
Date: Sat, 7 Feb 2015 11:43:04 -0500 (EST) [thread overview]
Message-ID: <13297940742494743691.enqueue@fantadrom.bsd.lv> (raw)
Log Message:
-----------
Closing a block validates it, which may end up deleting it,
so if we are in a loop over blocks, cleanly restart the loop
rather than risking use after free; found by jsg@ with afl.
Modified Files:
--------------
mdocml:
mdoc_macro.c
Revision Data
-------------
Index: mdoc_macro.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc_macro.c,v
retrieving revision 1.179
retrieving revision 1.180
diff -Lmdoc_macro.c -Lmdoc_macro.c -u -p -r1.179 -r1.180
--- mdoc_macro.c
+++ mdoc_macro.c
@@ -941,6 +941,7 @@ blk_full(MACRO_PROT_ARGS)
mdoc_macronames[tok],
mdoc_macronames[n->tok]);
rew_pending(mdoc, n);
+ n = mdoc->last;
continue;
case MDOC_It:
/* Delay in case it's astray. */
--
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reply other threads:[~2015-02-07 16:43 UTC|newest]
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