Fix OOB write in xmlXPathEmptyNodeSet

xmlXPathEmptyNodeSet would write a NULL pointer just beyond the end of
the nodeTab array. This macro isn't used in libxml2, but in some of the
math functions in libexslt where it can result in heap corruption and
denial of service.

Found by afl-fuzz and ASan.
1 file changed
tree: 8c4c089616c143870f69f748333364048e3aad5a
  1. bakefile/
  2. doc/
  3. example/
  4. include/
  5. macos/
  6. optim/
  7. os400/
  8. python/
  9. result/
  10. test/
  11. vms/
  12. VxWorks/
  13. win32/
  14. xstc/
  15. .gitignore
  16. acinclude.m4
  17. AUTHORS
  18. autogen.sh
  19. buf.c
  20. buf.h
  21. build_glob.py
  22. c14n.c
  23. catalog.c
  24. ChangeLog
  25. check-relaxng-test-suite.py
  26. check-relaxng-test-suite2.py
  27. check-xinclude-test-suite.py
  28. check-xml-test-suite.py
  29. check-xsddata-test-suite.py
  30. chvalid.c
  31. chvalid.def
  32. configure.ac
  33. Copyright
  34. dbgen.pl
  35. dbgenattr.pl
  36. debugXML.c
  37. dict.c
  38. DOCBparser.c
  39. elfgcchack.h
  40. enc.h
  41. encoding.c
  42. entities.c
  43. error.c
  44. genChRanges.py
  45. gentest.py
  46. genUnicode.py
  47. global.data
  48. globals.c
  49. HACKING
  50. hash.c
  51. HTMLparser.c
  52. HTMLtree.c
  53. INSTALL.libxml2
  54. legacy.c
  55. libxml-2.0-uninstalled.pc.in
  56. libxml-2.0.pc.in
  57. libxml.3
  58. libxml.h
  59. libxml.m4
  60. libxml.spec.in
  61. libxml2-config.cmake.in
  62. libxml2.doap
  63. libxml2.syms
  64. list.c
  65. MAINTAINERS
  66. Makefile.am
  67. Makefile.tests
  68. Makefile.win
  69. nanoftp.c
  70. nanohttp.c
  71. NEWS
  72. parser.c
  73. parserInternals.c
  74. pattern.c
  75. README
  76. README.cvs-commits
  77. README.tests
  78. regressions.py
  79. regressions.xml
  80. relaxng.c
  81. rngparser.c
  82. runsuite.c
  83. runtest.c
  84. runxmlconf.c
  85. save.h
  86. SAX.c
  87. SAX2.c
  88. schematron.c
  89. testapi.c
  90. testAutomata.c
  91. testC14N.c
  92. testchar.c
  93. testdict.c
  94. testdso.c
  95. testHTML.c
  96. testlimits.c
  97. testModule.c
  98. testOOM.c
  99. testOOMlib.c
  100. testOOMlib.h
  101. testReader.c
  102. testrecurse.c
  103. testRegexp.c
  104. testRelax.c
  105. testSAX.c
  106. testSchemas.c
  107. testThreads.c
  108. testThreadsWin32.c
  109. testURI.c
  110. testXPath.c
  111. threads.c
  112. timsort.h
  113. TODO
  114. TODO_SCHEMAS
  115. tree.c
  116. trio.c
  117. trio.h
  118. triodef.h
  119. trionan.c
  120. trionan.h
  121. triop.h
  122. triostr.c
  123. triostr.h
  124. uri.c
  125. valid.c
  126. xinclude.c
  127. xlink.c
  128. xml2-config.1
  129. xml2-config.in
  130. xml2Conf.sh.in
  131. xmlcatalog.c
  132. xmlIO.c
  133. xmllint.c
  134. xmlmemory.c
  135. xmlmodule.c
  136. xmlreader.c
  137. xmlregexp.c
  138. xmlsave.c
  139. xmlschemas.c
  140. xmlschemastypes.c
  141. xmlstring.c
  142. xmlunicode.c
  143. xmlwriter.c
  144. xpath.c
  145. xpointer.c
  146. xzlib.c
  147. xzlib.h