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qemu / qemu / 75a87af9b228ca7d14902a9390fe5e83c4898eb0
commit75a87af9b228ca7d14902a9390fe5e83c4898eb0[log] [tgz]
authorDavid Woodhouse <dwmw@amazon.co.uk>Tue Jul 25 12:05:00 2023 +0200
committerPhilippe Mathieu-Daudé <philmd@linaro.org>Tue Aug 01 23:52:23 2023 +0200
tree9c32705683936eb76605928a8b1e7121a3cf4605
parent19c417ec87a446ffd1a13eeec23226fe30f31b7e [diff]
hw/xen: prevent guest from binding loopback event channel to itself

Fuzzing showed that a guest could bind an interdomain port to itself, by
guessing the next port to be allocated and putting that as the 'remote'
port number. By chance, that works because the newly-allocated port has
type EVTCHNSTAT_unbound. It shouldn't.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Message-Id: <20230801175747.145906-4-dwmw2@infradead.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
1 file changed
tree: 9c32705683936eb76605928a8b1e7121a3cf4605
  1. .github/
  2. .gitlab/
  3. .gitlab-ci.d/
  4. accel/
  5. audio/
  6. authz/
  7. backends/
  8. block/
  9. bsd-user/
  10. chardev/
  11. common-user/
  12. configs/
  13. contrib/
  14. crypto/
  15. disas/
  16. docs/
  17. dump/
  18. ebpf/
  19. fpu/
  20. fsdev/
  21. gdb-xml/
  22. gdbstub/
  23. host/
  24. hw/
  25. include/
  26. io/
  27. libdecnumber/
  28. linux-headers/
  29. linux-user/
  30. migration/
  31. monitor/
  32. nbd/
  33. net/
  34. pc-bios/
  35. plugins/
  36. po/
  37. python/
  38. qapi/
  39. qga/
  40. qobject/
  41. qom/
  42. replay/
  43. roms/
  44. scripts/
  45. scsi/
  46. semihosting/
  47. softmmu/
  48. stats/
  49. storage-daemon/
  50. stubs/
  51. subprojects/
  52. target/
  53. tcg/
  54. tests/
  55. tools/
  56. trace/
  57. ui/
  58. util/
  59. .dir-locals.el
  60. .editorconfig
  61. .exrc
  62. .gdbinit
  63. .git-blame-ignore-revs
  64. .gitattributes
  65. .gitignore
  66. .gitlab-ci.yml
  67. .gitmodules
  68. .gitpublish
  69. .mailmap
  70. .patchew.yml
  71. .readthedocs.yml
  72. .travis.yml
  73. block.c
  74. blockdev-nbd.c
  75. blockdev.c
  76. blockjob.c
  77. configure
  78. COPYING
  79. COPYING.LIB
  80. cpu.c
  81. cpus-common.c
  82. event-loop-base.c
  83. gitdm.config
  84. hmp-commands-info.hx
  85. hmp-commands.hx
  86. iothread.c
  87. job-qmp.c
  88. job.c
  89. Kconfig
  90. Kconfig.host
  91. LICENSE
  92. MAINTAINERS
  93. Makefile
  94. memory_ldst.c.inc
  95. meson.build
  96. meson_options.txt
  97. module-common.c
  98. os-posix.c
  99. os-win32.c
  100. page-vary-common.c
  101. page-vary.c
  102. qemu-bridge-helper.c
  103. qemu-edid.c
  104. qemu-img-cmds.hx
  105. qemu-img.c
  106. qemu-io-cmds.c
  107. qemu-io.c
  108. qemu-keymap.c
  109. qemu-nbd.c
  110. qemu-options.hx
  111. qemu.nsi
  112. qemu.sasl
  113. README.rst
  114. replication.c
  115. trace-events
  116. VERSION
  117. version.rc