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It is possible to trigger heap overflows due to an integer overflow while parsing images. The integer overflow occurs because the chosen limit 0x10000 for dimensions is too large for 32 bit systems, because each pixel takes 4 bytes. Properly chosen values allow an overflow which in turn will lead to less allocated memory than needed for subsequent reads. See also: https://cgit.freedesktop.org/xorg/lib/libXcursor/commit/?id=4794b5dd34688158fb51a2943032569d3780c4b8 Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=103961 Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org> [Pekka: add link to the corresponding libXcursor commit] Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk> |
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| .. | ||
| convert_font.c | ||
| cursor-data.h | ||
| cursor.pcf | ||
| os-compatibility.c | ||
| os-compatibility.h | ||
| wayland-cursor-uninstalled.pc.in | ||
| wayland-cursor.c | ||
| wayland-cursor.h | ||
| wayland-cursor.pc.in | ||
| xcursor.c | ||
| xcursor.h | ||