python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2024-12-25 01:16:16 +03:00
Code Issues Packages Projects Releases Wiki Activity

fix dereference before checking for NULL in the ImagingTransformAffine function

Browse Source 
The `imIn` pointer is checked for `NULL`, but it seems to be dereferenced before this check. You must first make sure that the pointer is not `NULL` before using it.
This commit is contained in:
PavlNekrasov 2024-09-19 22:53:45 +03:00 committed by GitHub
parent 0f47ecd432
commit 46f2fa17be
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/libImaging/Geometry.c
View File

@ -1035,6 +1035,10 @@ ImagingTransformAffine(
double xx, yy;
double xo, yo;
if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0) {
return (Imaging)ImagingError_ModeError();
}
if (filterid || imIn->type == IMAGING_TYPE_SPECIAL) {
return ImagingGenericTransform(
imOut, imIn, x0, y0, x1, y1, affine_transform, a, filterid, fill
@ -1046,10 +1050,6 @@ ImagingTransformAffine(
return ImagingScaleAffine(imOut, imIn, x0, y0, x1, y1, a, fill);
}
if (!imOut || !imIn || strcmp(imIn->mode, imOut->mode) != 0) {
return (Imaging)ImagingError_ModeError();
}
if (x0 < 0) {
x0 = 0;
}