CVE-2025-55212

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-28 and 7.1.2-2, passing a geometry string containing only a colon (":") to montage -geometry leads GetGeometry() to set width/height to 0. Later, ThumbnailImage() divides by these zero dimensions, triggering a crash (SIGFPE/abort), resulting in a denial of service. This issue has been patched in versions 6.9.13-28 and 7.1.2-2.

Summary

Passing a geometry string containing only a colon (":") to montage -geometry leads GetGeometry() to set width/height to 0. Later, ThumbnailImage() divides by these zero dimensions, triggering a crash (SIGFPE/abort), resulting in a denial of service.

Details

Root Cause

1. montage -geometry ":" ... reaches MagickCore/geometry.c:GetGeometry().
2. StringToDouble/InterpretLocaleValue parses ":" as 0.0; then: https://github.com/ImageMagick/ImageMagick/blob/0ba1b587be17543b664f7ad538e9e51e0da59d17/MagickCore/geometry.c#L355 WidthValue (and/or HeightValue) is set with a zero dimension.
3. In MagickCore/resize.c:ThumbnailImage(), the code computes: https://github.com/ImageMagick/ImageMagick/blob/0ba1b587be17543b664f7ad538e9e51e0da59d17/MagickCore/resize.c#L4625-L4629 causing a division by zero and immediate crash.

The issue is trivially triggerable without external input files (e.g., using xc:white).

Reproduction

Environment

Version: ImageMagick 7.1.2-1 (Beta) Q16-HDRI x86_64 0ba1b587b:20250812 https://imagemagick.org
Features: Cipher DPC HDRI
Delegates (built-in): bzlib fontconfig freetype jbig jng jpeg lcms lzma pangocairo png tiff x xml zlib
Compiler: clang (14.0.0)
OS/Arch: Linux x86_64

Steps

./bin/magick montage -geometry : xc:white null:

Observed result

IOT instruction (core dumped)
# (Environment-dependent: SIGFPE/abort may be observed.)

PoC

No external file required; the pseudo image xc:white suffices:

./bin/magick montage -geometry : xc:white null:

Impact

• Denial of Service: A divide-by-zero in ThumbnailImage() causes immediate abnormal termination (e.g., SIGFPE/abort), crashing the ImageMagick process.

Suggested fix

Defensively reject zero dimensions early in ThumbnailImage():

if ((columns == 0) || (rows == 0)) {
  (void) ThrowMagickException(exception, GetMagickModule(), OptionError,
    "InvalidGeometry", "thumbnail requires non-zero dimensions: %.20gx%.20g",
    (double) columns, (double) rows);
  return (Image *) NULL;
}

Additionally, consider tightening validation in GetGeometry() so that colon-only (and similar malformed) inputs do not yield WidthValue/HeightValue with zero, or are rejected outright. Variants like "x:" or ":x" may also need explicit handling (maintainer confirmation requested).

Credits

Team Daemon Fuzz Hunters

Bug Hunting Master Program, HSpace/Findthegap <br>

Woojin Park @jin-156 [email protected]

Hojun Lee @leehohojune [email protected]

Youngin Won @amethyst0225 [email protected]

Siyeon Han @hanbunny [email protected]

Summary

Passing a geometry string containing only a colon (":") to montage -geometry leads GetGeometry() to set width/height to 0. Later, ThumbnailImage() divides by these zero dimensions, triggering a crash (SIGFPE/abort), resulting in a denial of service.

Details

Root Cause

1. montage -geometry ":" ... reaches MagickCore/geometry.c:GetGeometry().
2. StringToDouble/InterpretLocaleValue parses ":" as 0.0; then: https://github.com/ImageMagick/ImageMagick/blob/0ba1b587be17543b664f7ad538e9e51e0da59d17/MagickCore/geometry.c#L355 WidthValue (and/or HeightValue) is set with a zero dimension.
3. In MagickCore/resize.c:ThumbnailImage(), the code computes: https://github.com/ImageMagick/ImageMagick/blob/0ba1b587be17543b664f7ad538e9e51e0da59d17/MagickCore/resize.c#L4625-L4629 causing a division by zero and immediate crash.

The issue is trivially triggerable without external input files (e.g., using xc:white).

Reproduction

Environment

Version: ImageMagick 7.1.2-1 (Beta) Q16-HDRI x86_64 0ba1b587b:20250812 https://imagemagick.org
Features: Cipher DPC HDRI
Delegates (built-in): bzlib fontconfig freetype jbig jng jpeg lcms lzma pangocairo png tiff x xml zlib
Compiler: clang (14.0.0)
OS/Arch: Linux x86_64

Steps

./bin/magick montage -geometry : xc:white null:

Observed result

IOT instruction (core dumped)
# (Environment-dependent: SIGFPE/abort may be observed.)

PoC

No external file required; the pseudo image xc:white suffices:

./bin/magick montage -geometry : xc:white null:

Impact

• Denial of Service: A divide-by-zero in ThumbnailImage() causes immediate abnormal termination (e.g., SIGFPE/abort), crashing the ImageMagick process.

Suggested fix

Defensively reject zero dimensions early in ThumbnailImage():

if ((columns == 0) || (rows == 0)) {
  (void) ThrowMagickException(exception, GetMagickModule(), OptionError,
    "InvalidGeometry", "thumbnail requires non-zero dimensions: %.20gx%.20g",
    (double) columns, (double) rows);
  return (Image *) NULL;
}

Additionally, consider tightening validation in GetGeometry() so that colon-only (and similar malformed) inputs do not yield WidthValue/HeightValue with zero, or are rejected outright. Variants like "x:" or ":x" may also need explicit handling (maintainer confirmation requested).

Credits

Team Daemon Fuzz Hunters

Bug Hunting Master Program, HSpace/Findthegap <br>

Woojin Park @jin-156 [email protected]

Hojun Lee @leehohojune [email protected]

Youngin Won @amethyst0225 [email protected]

Siyeon Han @hanbunny [email protected]

Use ImageMagick to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, GIF, HEIC, TIFF, DPX, EXR, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

Security Fix(es):

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, ImageMagick is vulnerable to heap-buffer overflow read around the handling of images with separate alpha channels when performing image magnification in ReadOneMNGIMage. This can likely be used to leak subsequent memory contents into the output image. This issue has been patched in version 7.1.2-1.(CVE-2025-55004)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, when preparing to transform from Log to sRGB colorspaces, the logmap construction fails to handle cases where the reference-black or reference-white value is larger than 1024. This leads to corrupting memory beyond the end of the allocated logmap buffer. This issue has been patched in version 7.1.2-1.(CVE-2025-55005)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, the magnified size calculations in ReadOneMNGIMage (in coders/png.c) are unsafe and can overflow, leading to memory corruption. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55154)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, there is undefined behavior (function-type-mismatch) in splay tree cloning callback. This results in a deterministic abort under UBSan (DoS in sanitizer builds), with no crash in a non-sanitized build. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55160)

A vulnerability classified as problematic was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software).The manipulation of the argument width/height with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero.As an impact it is known to affect availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 5f0bcf986b8b5e90567750d31a37af502b73f2af is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55212)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software). It has been classified as critical.CWE is classifying the issue as CWE-123. Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.This is going to have an impact on confidentiality, integrity, and availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 439b362b93c074eea6c3f834d84982b43ef057d5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55298)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 on 32-bit (Image Processing Software). It has been rated as critical.Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Impacted is confidentiality, integrity, and…

Use ImageMagick to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, GIF, HEIC, TIFF, DPX, EXR, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

Security Fix(es):

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, ImageMagick is vulnerable to heap-buffer overflow read around the handling of images with separate alpha channels when performing image magnification in ReadOneMNGIMage. This can likely be used to leak subsequent memory contents into the output image. This issue has been patched in version 7.1.2-1.(CVE-2025-55004)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, when preparing to transform from Log to sRGB colorspaces, the logmap construction fails to handle cases where the reference-black or reference-white value is larger than 1024. This leads to corrupting memory beyond the end of the allocated logmap buffer. This issue has been patched in version 7.1.2-1.(CVE-2025-55005)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, the magnified size calculations in ReadOneMNGIMage (in coders/png.c) are unsafe and can overflow, leading to memory corruption. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55154)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, there is undefined behavior (function-type-mismatch) in splay tree cloning callback. This results in a deterministic abort under UBSan (DoS in sanitizer builds), with no crash in a non-sanitized build. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55160)

A vulnerability classified as problematic was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software).The manipulation of the argument width/height with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero.As an impact it is known to affect availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 5f0bcf986b8b5e90567750d31a37af502b73f2af is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55212)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software). It has been classified as critical.CWE is classifying the issue as CWE-123. Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.This is going to have an impact on confidentiality, integrity, and availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 439b362b93c074eea6c3f834d84982b43ef057d5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55298)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 on 32-bit (Image Processing Software). It has been rated as critical.Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Impacted is confidentiality, integrity, and…

Use ImageMagick to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, GIF, HEIC, TIFF, DPX, EXR, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

Security Fix(es):

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, ImageMagick is vulnerable to heap-buffer overflow read around the handling of images with separate alpha channels when performing image magnification in ReadOneMNGIMage. This can likely be used to leak subsequent memory contents into the output image. This issue has been patched in version 7.1.2-1.(CVE-2025-55004)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, when preparing to transform from Log to sRGB colorspaces, the logmap construction fails to handle cases where the reference-black or reference-white value is larger than 1024. This leads to corrupting memory beyond the end of the allocated logmap buffer. This issue has been patched in version 7.1.2-1.(CVE-2025-55005)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, the magnified size calculations in ReadOneMNGIMage (in coders/png.c) are unsafe and can overflow, leading to memory corruption. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55154)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, there is undefined behavior (function-type-mismatch) in splay tree cloning callback. This results in a deterministic abort under UBSan (DoS in sanitizer builds), with no crash in a non-sanitized build. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55160)

A vulnerability classified as problematic was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software).The manipulation of the argument width/height with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero.As an impact it is known to affect availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 5f0bcf986b8b5e90567750d31a37af502b73f2af is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55212)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software). It has been classified as critical.CWE is classifying the issue as CWE-123. Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.This is going to have an impact on confidentiality, integrity, and availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 439b362b93c074eea6c3f834d84982b43ef057d5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55298)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 on 32-bit (Image Processing Software). It has been rated as critical.Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Impacted is confidentiality, integrity, and…

Use ImageMagick to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, GIF, HEIC, TIFF, DPX, EXR, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

Security Fix(es):

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, ImageMagick is vulnerable to heap-buffer overflow read around the handling of images with separate alpha channels when performing image magnification in ReadOneMNGIMage. This can likely be used to leak subsequent memory contents into the output image. This issue has been patched in version 7.1.2-1.(CVE-2025-55004)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, when preparing to transform from Log to sRGB colorspaces, the logmap construction fails to handle cases where the reference-black or reference-white value is larger than 1024. This leads to corrupting memory beyond the end of the allocated logmap buffer. This issue has been patched in version 7.1.2-1.(CVE-2025-55005)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, the magnified size calculations in ReadOneMNGIMage (in coders/png.c) are unsafe and can overflow, leading to memory corruption. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55154)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, there is undefined behavior (function-type-mismatch) in splay tree cloning callback. This results in a deterministic abort under UBSan (DoS in sanitizer builds), with no crash in a non-sanitized build. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55160)

A vulnerability classified as problematic was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software).The manipulation of the argument width/height with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero.As an impact it is known to affect availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 5f0bcf986b8b5e90567750d31a37af502b73f2af is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55212)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software). It has been classified as critical.CWE is classifying the issue as CWE-123. Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.This is going to have an impact on confidentiality, integrity, and availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 439b362b93c074eea6c3f834d84982b43ef057d5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55298)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 on 32-bit (Image Processing Software). It has been rated as critical.Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Impacted is confidentiality, integrity, and…

Use ImageMagick to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, GIF, HEIC, TIFF, DPX, EXR, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

Security Fix(es):

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, the magnified size calculations in ReadOneMNGIMage (in coders/png.c) are unsafe and can overflow, leading to memory corruption. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55154)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, there is undefined behavior (function-type-mismatch) in splay tree cloning callback. This results in a deterministic abort under UBSan (DoS in sanitizer builds), with no crash in a non-sanitized build. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55160)

A vulnerability classified as problematic was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software).The manipulation of the argument width/height with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero.As an impact it is known to affect availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 5f0bcf986b8b5e90567750d31a37af502b73f2af is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55212)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software). It has been classified as critical.CWE is classifying the issue as CWE-123. Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.This is going to have an impact on confidentiality, integrity, and availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 439b362b93c074eea6c3f834d84982b43ef057d5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55298)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 on 32-bit (Image Processing Software). It has been rated as critical.Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Impacted is confidentiality, integrity, and availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 2c55221f4d38193adcb51056c14cf238fbcc35d7 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-57803)

Use ImageMagick to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, GIF, HEIC, TIFF, DPX, EXR, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

Security Fix(es):

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, ImageMagick is vulnerable to heap-buffer overflow read around the handling of images with separate alpha channels when performing image magnification in ReadOneMNGIMage. This can likely be used to leak subsequent memory contents into the output image. This issue has been patched in version 7.1.2-1.(CVE-2025-55004)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-1, when preparing to transform from Log to sRGB colorspaces, the logmap construction fails to handle cases where the reference-black or reference-white value is larger than 1024. This leads to corrupting memory beyond the end of the allocated logmap buffer. This issue has been patched in version 7.1.2-1.(CVE-2025-55005)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, the magnified size calculations in ReadOneMNGIMage (in coders/png.c) are unsafe and can overflow, leading to memory corruption. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55154)

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-27 and 7.1.2-1, there is undefined behavior (function-type-mismatch) in splay tree cloning callback. This results in a deterministic abort under UBSan (DoS in sanitizer builds), with no crash in a non-sanitized build. This issue has been patched in versions 6.9.13-27 and 7.1.2-1.(CVE-2025-55160)

A vulnerability classified as problematic was found in ImageMagick up to 6.9.13-27/7.1.2-1 (Image Processing Software).The manipulation of the argument width/height with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero.As an impact it is known to affect availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 5f0bcf986b8b5e90567750d31a37af502b73f2af is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-55212)

A vulnerability was found in ImageMagick up to 6.9.13-27/7.1.2-1 on 32-bit (Image Processing Software). It has been rated as critical.Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Impacted is confidentiality, integrity, and availability.Upgrading to version 6.9.13-28 or 7.1.2-2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 2c55221f4d38193adcb51056c14cf238fbcc35d7 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-57803)

ImageMagick is free and open-source software used for editing and manipulating digital images. ImageMagick versions lower than 14.8.2 include insecure functions: SeekBlob(), which permits advancing the stream offset beyond the current end without increasing capacity, and WriteBlob(), which then expands by quantum + length (amortized) instead of offset + length, and copies to data +…

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-28 and 7.1.2-2, passing a geometry string containing only a colon (":") to montage -geometry leads GetGeometry() to set width/height to 0. Later, ThumbnailImage() divides by these zero dimensions, triggering a crash (SIGFPE/abort), resulting in a denial of service. This issue has been patched in versions 6.9.13-28 and 7.1.2-2.

• CVE-2025-55154: fix integer overflows in MNG magnification
• CVE-2025-55212: fix division by zero in ThumbnailImage
• CVE-2025-57803: fix 32-bit integer overflow when writing BMP scanline stride
• CVE-2025-55298: fix format string bug leading to RCE or heap overflow

• SECURITY UPDATE: geometry string with only ":" triggers crash leading to denial of service
  • debian/patches/CVE-2025-55212.patch: Fix invalid width and height checks in ThumbnailImage by adding MagickSafeReciprocal method
  • CVE-2025-55212

• SECURITY UPDATE: denial of Service vulnerability due to zero dimensions crash
  • debian/patches/CVE-2025-55212.patch: Fix invalid width or height checks in ThumbnailImage method and add safe reciprocal function to avoid division by zero
  • CVE-2025-55212

• SECURITY UPDATE: crash triggered by passing a colon to montage -geometry
  • debian/patches/CVE-2025-55212.patch: Fix invalid height and width checks in ThumbnailImage using MagickSafeReciprocal
  • CVE-2025-55212

• CVE-2025-53019: fix memory leak in StreamImage with multiple %d in filename template
• CVE-2025-55212: fix division-by-zero in ThumbnailImage via zero-dimension geometry
• CVE-2026-25795: fix NULL dereference in ReadSFWImage on temp file failure
• CVE-2026-25799: fix division-by-zero in YUV sampling factor validation
• CVE-2026-26066: fix infinite loop in formatIPTC writing invalid IPTC data

• CVE-2025-53019: fix memory leak in StreamImage with multiple %d in filename template
• CVE-2025-55212: fix division-by-zero in ThumbnailImage via zero-dimension geometry
• CVE-2026-25795: fix NULL dereference in ReadSFWImage on temp file failure
• CVE-2026-25799: fix division-by-zero in YUV sampling factor validation
• CVE-2026-26066: fix infinite loop in formatIPTC writing invalid IPTC data

• SECURITY UPDATE: fix vulnerability in stream handling
  • debian/patches/CVE-2025-53019.patch: fix vulnerability in stream handling
  • CVE-2025-53019
• SECURITY UPDATE: fix integer overflow in resize
  • debian/patches/CVE-2025-55212.patch: fix integer overflow in resize
  • CVE-2025-55212
• SECURITY UPDATE: fix heap-based buffer overflow in image processing
  • debian/patches/CVE-2025-55298.patch: fix heap-based buffer overflow in image processing
  • CVE-2025-55298
• SECURITY UPDATE: fix buffer overflow in BMP coder
  • debian/patches/CVE-2025-57803.patch: fix buffer overflow in BMP coder
  • CVE-2025-57803
• SECURITY UPDATE: fix vulnerability in PNG coder
  • debian/patches/CVE-2025-55154.patch: fix vulnerability in PNG coder
  • CVE-2025-55154
• SECURITY UPDATE: fix buffer overflow in BMP coder on 32-bit systems
  • debian/patches/CVE-2025-62171.patch: fix buffer overflow in BMP coder on 32-bit systems
  • CVE-2025-62171
• SECURITY UPDATE: fix stack overflow via infinite recursion in MSL and SVG coders
  • debian/patches/CVE-2025-68618.patch: fix stack overflow via infinite recursion in MSL and SVG coders
  • CVE-2025-68618
• SECURITY UPDATE: fix denial of service in SVG coder
  • debian/patches/CVE-2025-69204.patch: fix denial of service in SVG coder
  • CVE-2025-69204

These are all security issues fixed in the ImageMagick-7.1.2.2-2.1 package on the GA media of openSUSE Tumbleweed.

This update for ImageMagick fixes the following issues:

• CVE-2025-62594: unsigned underflow and division-by-zero can lead to OOB pointer arithmetic and process crash (bsc#1252749).
• CVE-2025-57807: BlobStream Forward-Seek Under-Allocation (bsc#1249362).
• CVE-2025-62171: incomplete fix for integer overflow in BMP Decoder (bsc#1252282).
• CVE-2025-55298: format string bug vulnerability can lead to heap overflow (bsc#1248780).
• CVE-2025-57803: 32-bit integer overflow can lead to heap out-of-bounds (OOB) write (bsc#1248784).
• CVE-2025-55212: division-by-zero in ThumbnailImage() when passing a geometry string containing only a colon to montage -geometry (bsc#1248767).

Root has patched CVE-2025-55212 in the rootio-imagemagick package for Root:Debian:12. Multiple fixed versions available.

Root has patched CVE-2025-55212 in the rootio-imagemagick package for Root:Debian:13. Multiple fixed versions available.

This update for ImageMagick fixes the following issues:

• CVE-2025-55004: Fixed heap buffer over-read in in ReadOneMNGIMage when processing images with separate alpha channels (bsc#1248076).
• CVE-2025-55005: Fixed heap buffer overflow when transforming from Log to sRGB colorspaces (bsc#1248077).
• CVE-2025-55154: Fixed integer overflow when performing magnified size calculations in ReadOneMNGIMage can lead to out-of-bounds write (bsc#1248078).
• CVE-2025-55160: Fixed undefined behavior due to function-type-mismatch in CloneSplayTree (bsc#1248079).
• CVE-2025-55212: Fixed division-by-zero in ThumbnailImage() when passing a geometry string containing only a colon to montage -geometry (bsc#1248767).
• CVE-2025-55298: Fixed heap overflow due to format string bug vulnerability (bsc#1248780).
• CVE-2025-57803: Fixed heap out-of-bounds (OOB) write due to 32-bit integer overflow (bsc#1248784).

This update for ImageMagick fixes the following issues:

• CVE-2025-55005: Fixed heap buffer overflow when transforming from Log to sRGB colorspaces (bsc#1248077).
• CVE-2025-55154: Fixed integer overflow when performing magnified size calculations in ReadOneMNGIMage (bsc#1248078).
• CVE-2025-55160: Fixed undefined behavior due to function-type-mismatch in CloneSplayTree (bsc#1248079).
• CVE-2025-55212: Fixed division-by-zero in ThumbnailImage() when passing a geometry string containing only a colon to montage -geometry (bsc#1248767).
• CVE-2025-55298: Fixed heap overflow due to format string bug vulnerability (bsc#1248780).
• CVE-2025-57803: Fixed heap out-of-bounds (OOB) write due to 32-bit integer overflow (bsc#1248784).

This update for ImageMagick fixes the following issues:

• CVE-2025-55004: Fixed heap buffer over-read in in ReadOneMNGIMage when processing images with separate alpha channels (bsc#1248076).
• CVE-2025-55005: Fixed heap buffer overflow when transforming from Log to sRGB colorspaces (bsc#1248077).
• CVE-2025-55154: Fixed integer overflow when performing magnified size calculations in ReadOneMNGIMage (bsc#1248078).
• CVE-2025-55160: Fixed undefined behavior due to function-type-mismatch in CloneSplayTree (bsc#1248079).
• CVE-2025-55212: Fixed division-by-zero in ThumbnailImage() when passing a geometry string containing only a colon to montage -geometry (bsc#1248767).
• CVE-2025-55298: Fixed heap overflow due to format string bug vulnerability (bsc#1248780).
• CVE-2025-57803: Fixed heap out-of-bounds (OOB) write due to 32-bit integer overflow (bsc#1248784).

This update for ImageMagick fixes the following issues:

• CVE-2025-55004: Fixed heap buffer over-read in in ReadOneMNGIMage when processing images with separate alpha channels (bsc#1248076).
• CVE-2025-55005: Fixed heap buffer overflow when transforming from Log to sRGB colorspaces (bsc#1248077).
• CVE-2025-55154: Fixed integer overflow when performing magnified size calculations in ReadOneMNGIMage (bsc#1248078).
• CVE-2025-55160: Fixed undefined behavior due to function-type-mismatch in CloneSplayTree (bsc#1248079).
• CVE-2025-55212: Fixed division-by-zero in ThumbnailImage() when passing a geometry string containing only a colon to montage -geometry (bsc#1248767).
• CVE-2025-55298: Fixed heap overflow due to format string bug vulnerability (bsc#1248780).
• CVE-2025-57803: Fixed heap out-of-bounds (OOB) write due to 32-bit integer overflow (bsc#1248784).

Other fixes:

• Fixed output file placeholders (bsc#1247475).

This update for ImageMagick fixes the following issues:

• CVE-2025-55004: Fixed heap buffer over-read in in ReadOneMNGIMage when processing images with separate alpha channels (bsc#1248076).
• CVE-2025-55005: Fixed heap buffer overflow when transforming from Log to sRGB colorspaces (bsc#1248077).
• CVE-2025-55154: Fixed integer overflow when performing magnified size calculations in ReadOneMNGIMage (bsc#1248078).
• CVE-2025-55160: Fixed undefined behavior due to function-type-mismatch in CloneSplayTree (bsc#1248079).
• CVE-2025-55212: Fixed division-by-zero in ThumbnailImage() when passing a geometry string containing only a colon to montage -geometry (bsc#1248767).
• CVE-2025-55298: Fixed heap overflow due to format string bug vulnerability (bsc#1248780).
• CVE-2025-57803: Fixed heap out-of-bounds (OOB) write due to 32-bit integer overflow (bsc#1248784).

Other fixes:

• Fixed output file placeholders (bsc#1247475).

This update for ImageMagick fixes the following issues:

• CVE-2025-62594: unsigned underflow and division-by-zero can lead to OOB pointer arithmetic and process crash (bsc#1252749).
• CVE-2025-57807: BlobStream Forward-Seek Under-Allocation (bsc#1249362).
• CVE-2025-62171: incomplete fix for integer overflow in BMP Decoder (bsc#1252282).
• CVE-2025-55298: format string bug vulnerability can lead to heap overflow (bsc#1248780).
• CVE-2025-57803: 32-bit integer overflow can lead to heap out-of-bounds (OOB) write (bsc#1248784).
• CVE-2025-55212: division-by-zero in ThumbnailImage() when passing a geometry string containing only a colon to montage -geometry (bsc#1248767).

It was discovered that ImageMagick did not properly handle memory when performing magnified size calculations. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-55154)

Woojin Park, Hojun Lee, Youngin Won, and Siyeon Han discovered that ImageMagick incorrectly handled creating thumbnail images for certain dimensions. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2025-55212)

Lumina Mescuwa discovered that ImageMagick did not properly handle cloning splay trees in the MagickCore library. An attacker could possibly use this issue to cause sanitized builds of ImageMagick to crash, resulting in a denial of service. (CVE-2025-55160)

Lumina Mescuwa discovered that ImageMagick did not properly handle memory. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-57807)