[Bug 20896] New: Use-after-free in DdeClientTransaction in user32 dde tests
wine-bugs at winehq.org
wine-bugs at winehq.org
Tue Dec 1 20:35:09 CST 2009
http://bugs.winehq.org/show_bug.cgi?id=20896
Summary: Use-after-free in DdeClientTransaction in user32 dde
tests
Product: Wine
Version: 1.1.33
Platform: PC
OS/Version: Linux
Status: NEW
Keywords: download, source, testcase
Severity: normal
Priority: P2
Component: user32
AssignedTo: wine-bugs at winehq.org
ReportedBy: dank at kegel.com
http://kegel.com/wine/valgrind/logs/2009-11-30-19.16/vg-user32_dde.txt
says
Invalid read of size 2
at GlobalFree (heap.c:767)
by WDML_FreeTransaction (dde_misc.c:2439)
by DdeClientTransaction (dde_client.c:1228)
by test_ddeml_client (dde.c:392)
by func_dde (dde.c:2357)
by run_test (test.h:535)
by main (test.h:585)
Address 0x7f075e80 is not stack'd, malloc'd or (recently) free'd
It's a little hard to see what's going on, but it
appears that the memory in question was indeed recently freed,
judging by the attached log, which was generated by the command
WINEDEBUG=+relay,+heap valgrind --trace-children=yes wine user32_test.exe.so
dde.c
and edited to show just the area of interest.
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