[Xen-changelog] [qemu-upstream-unstable] vt82c686: avoid out-of-bounds read

[patchbot@xxxxxxx]

commit 0d093159b4a48e24350cb7092b3b62ec4402f447
Author:     Paolo Bonzini <pbonzini@xxxxxxxxxx>
AuthorDate: Wed Dec 10 10:17:36 2014 +0100
Commit:     Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
CommitDate: Sun Feb 22 18:16:04 2015 -0600

    vt82c686: avoid out-of-bounds read
    
    superio_ioport_readb can read the 256th element of the array.
    Coverity reports an out-of-bounds write in superio_ioport_writeb,
    but it does not show the corresponding out-of-bounds read
    because it cannot prove that it can happen.  Fix the root
    cause of the problem (zhanghailang's patch instead fixes
    the logic in superio_ioport_writeb).
    
    Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
    Reviewed-by: zhanghailiang <zhang.zhanghailiang@xxxxxxxxxx>
    Signed-off-by: Michael Tokarev <mjt@xxxxxxxxxx>
    Cc: qemu-stable@xxxxxxxxxx
    (cherry picked from commit 9feb8adeaa850d15b930c30f22c1ed2f2f695172)
    Signed-off-by: Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
---
 hw/isa/vt82c686.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c
index e0c235c..a43e26d 100644
--- a/hw/isa/vt82c686.c
+++ b/hw/isa/vt82c686.c
@@ -36,7 +36,7 @@
 
 typedef struct SuperIOConfig
 {
-    uint8_t config[0xff];
+    uint8_t config[0x100];
     uint8_t index;
     uint8_t data;
 } SuperIOConfig;
--
generated by git-patchbot for /home/xen/git/qemu-upstream-unstable.git

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