diff options
Diffstat (limited to 'meta/recipes-qt/qt4/qt4-4.8.6/0034-Fix-a-division-by-zero-when-processing-malformed-BMP.patch')
-rw-r--r-- | meta/recipes-qt/qt4/qt4-4.8.6/0034-Fix-a-division-by-zero-when-processing-malformed-BMP.patch | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/meta/recipes-qt/qt4/qt4-4.8.6/0034-Fix-a-division-by-zero-when-processing-malformed-BMP.patch b/meta/recipes-qt/qt4/qt4-4.8.6/0034-Fix-a-division-by-zero-when-processing-malformed-BMP.patch deleted file mode 100644 index 8ff4ad5062..0000000000 --- a/meta/recipes-qt/qt4/qt4-4.8.6/0034-Fix-a-division-by-zero-when-processing-malformed-BMP.patch +++ /dev/null @@ -1,44 +0,0 @@ -From e50aa2252cdd5cb53eef7d8c4503c7edff634f68 Mon Sep 17 00:00:00 2001 -From: "Richard J. Moore" <rich@kde.org> -Date: Tue, 24 Feb 2015 19:02:35 +0000 -Subject: [PATCH] Fix a division by zero when processing malformed BMP files. - -This fixes a division by 0 when processing a maliciously crafted BMP -file. No impact beyond DoS. - -Backport of 661f6bfd032dacc62841037732816a583640e187 - -Upstream-Status: Backport - -Task-number: QTBUG-44547 -Change-Id: I43f06e752b11cb50669101460902a82b885ae618 -Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> -Signed-off-by: Jonathan Liu <net147@gmail.com> ---- - src/gui/image/qbmphandler.cpp | 6 ++++++ - 1 file changed, 6 insertions(+) - -diff --git a/src/gui/image/qbmphandler.cpp b/src/gui/image/qbmphandler.cpp -index b22e842..30fa9e0 100644 ---- a/src/gui/image/qbmphandler.cpp -+++ b/src/gui/image/qbmphandler.cpp -@@ -319,10 +319,16 @@ static bool read_dib_body(QDataStream &s, const BMP_INFOHDR &bi, int offset, int - } - } else if (comp == BMP_BITFIELDS && (nbits == 16 || nbits == 32)) { - red_shift = calc_shift(red_mask); -+ if (((red_mask >> red_shift) + 1) == 0) -+ return false; - red_scale = 256 / ((red_mask >> red_shift) + 1); - green_shift = calc_shift(green_mask); -+ if (((green_mask >> green_shift) + 1) == 0) -+ return false; - green_scale = 256 / ((green_mask >> green_shift) + 1); - blue_shift = calc_shift(blue_mask); -+ if (((blue_mask >> blue_shift) + 1) == 0) -+ return false; - blue_scale = 256 / ((blue_mask >> blue_shift) + 1); - } else if (comp == BMP_RGB && (nbits == 24 || nbits == 32)) { - blue_mask = 0x000000ff; --- -2.3.1 - |