The ReadMNGImage function in coders/png.c in GraphicsMagick 1.3.26 has an out-of-order CloseBlob call, resulting in a use-after-free via a crafted file.

The ReadJPEGImage function in coders/jpeg.c in GraphicsMagick 1.3.26 creates a pixel cache before a successful read of a scanline, which allows remote attackers to cause a denial of service (resource consumption) via crafted JPEG files.

GraphicsMagick 1.3.26 has double free vulnerabilities in the ReadOneJNGImage() function in coders/png.c.

The ReadOneJNGImage function in coders/png.c in GraphicsMagick 1.3.26 allows remote attackers to cause a denial of service (application crash) during JNG reading via a zero-length color_image data structure.

When GraphicsMagick 1.3.25 processes a DPX image (with metadata indicating a large width) in coders/dpx.c, a denial of service (OOM) can occur in ReadDPXImage().

When GraphicsMagick 1.3.25 processes a MATLAB image in coders/mat.c, it can lead to a denial of service (OOM) in ReadMATImage() if the size specified for a MAT Object is larger than the actual amount of data.

When GraphicsMagick 1.3.25 processes an RGB TIFF picture (with metadata indicating a single sample per pixel) in coders/tiff.c, a buffer overflow occurs, related to QuantumTransferMode.

ImageMagick before 7.0.5-2 and GraphicsMagick before 1.3.24 use uninitialized memory in the RLE decoder, allowing an attacker to leak sensitive information from process memory space, as demonstrated by remote attacks against ImageMagick code in a long-running server process that converts image data on behalf of multiple users. This is caused by a missing initialization step in the ReadRLEImage function in coders/rle.c.

The QuantumTransferMode function in coders/tiff.c in GraphicsMagick 1.3.25 and earlier allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a small samples per pixel value in a CMYKA TIFF file.

The MagickRealloc function in memory.c in Graphicsmagick 1.3.25 allows remote attackers to cause a denial of service (crash) via large dimensions in a jpeg image.