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4a59df45f8
affects: <= 1.1.14 CVE-2017-16612: Fix heap overflows when parsing malicious files It is possible to trigger heap overflows due to an integer overflow while parsing images and a signedness issue while parsing comments. 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. The signedness bug is triggered by reading the length of a comment as unsigned int, but casting it to int when calling the function XcursorCommentCreate. Turning length into a negative value allows the check against XCURSOR_COMMENT_MAX_LEN to pass, and the following addition of sizeof (XcursorComment) + 1 makes it possible to allocate less memory than needed for subsequent reads. (From OE-Core rev: bdf13518e79ab949c4320226a399ee4a3913ee30) Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com> Signed-off-by: Armin Kuster <akuster@mvista.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> |
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| .. | ||
| classes | ||
| conf | ||
| files | ||
| lib | ||
| recipes-bsp | ||
| recipes-connectivity | ||
| recipes-core | ||
| recipes-devtools | ||
| recipes-extended | ||
| recipes-gnome | ||
| recipes-graphics | ||
| recipes-kernel | ||
| recipes-multimedia | ||
| recipes-rt | ||
| recipes-sato | ||
| recipes-support | ||
| site | ||
| COPYING.GPLv2 | ||
| COPYING.MIT | ||
| recipes.txt | ||