CVE-2026-23952

Summary

NULL pointer dereference in MSL (Magick Scripting Language) parser when processing <comment> tag before any image is loaded.

Version

• ImageMagick 7.x (tested on current main branch)
• Commit: HEAD

Steps to Reproduce

Method 1: Using ImageMagick directly

magick MSL:poc.msl out.png

Method 2: Using OSS-Fuzz reproduce

python3 infra/helper.py build_fuzzers imagemagick
python3 infra/helper.py reproduce imagemagick msl_fuzzer poc.msl

Or run the fuzzer directly:

./msl_fuzzer poc.msl

Expected Behavior

ImageMagick should handle the malformed MSL gracefully and return an error message.

Actual Behavior

convert: MagickCore/property.c:297: MagickBooleanType DeleteImageProperty(Image *, const char *): Assertion `image != (Image *) NULL' failed.
Aborted

Root Cause Analysis

In coders/msl.c:7091, MSLEndElement() calls DeleteImageProperty() on msl_info->image[n] when handling the </comment> end tag without checking if the image is NULL:

if (LocaleCompare((const char *) tag,"comment") == 0 )
  {
    (void) DeleteImageProperty(msl_info->image[n],"comment");  // No NULL check
    ...
  }

When <comment> appears before any <read> operation, msl_info->image[n] is NULL, causing the assertion failure in DeleteImageProperty() at property.c:297.

Impact

• DoS: Crash via assertion failure (debug builds) or NULL pointer dereference (release builds)
• Affected: Any application using ImageMagick to process user-supplied MSL files

Fuzzer

This issue was discovered using a custom MSL fuzzer:

#include <cstdint>
#include <Magick++/Blob.h>
#include <Magick++/Image.h>
#include "utils.cc"

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
{
  if (IsInvalidSize(Size))
    return(0);
  try
  {
    const Magick::Blob blob(Data, Size);
    Magick::Image image;
    image.magick("MSL");
    image.fileName("MSL:");
    image.read(blob);
  }
  catch (Magick::Exception)
  {
  }
  return(0);
}

This issue was found by Team FuzzingBrain @ Texas A&M University

Summary

NULL pointer dereference in MSL (Magick Scripting Language) parser when processing <comment> tag before any image is loaded.

Version

• ImageMagick 7.x (tested on current main branch)
• Commit: HEAD

Steps to Reproduce

Method 1: Using ImageMagick directly

magick MSL:poc.msl out.png

Method 2: Using OSS-Fuzz reproduce

python3 infra/helper.py build_fuzzers imagemagick
python3 infra/helper.py reproduce imagemagick msl_fuzzer poc.msl

Or run the fuzzer directly:

./msl_fuzzer poc.msl

Expected Behavior

ImageMagick should handle the malformed MSL gracefully and return an error message.

Actual Behavior

convert: MagickCore/property.c:297: MagickBooleanType DeleteImageProperty(Image *, const char *): Assertion `image != (Image *) NULL' failed.
Aborted

Root Cause Analysis

In coders/msl.c:7091, MSLEndElement() calls DeleteImageProperty() on msl_info->image[n] when handling the </comment> end tag without checking if the image is NULL:

if (LocaleCompare((const char *) tag,"comment") == 0 )
  {
    (void) DeleteImageProperty(msl_info->image[n],"comment");  // No NULL check
    ...
  }

When <comment> appears before any <read> operation, msl_info->image[n] is NULL, causing the assertion failure in DeleteImageProperty() at property.c:297.

Impact

• DoS: Crash via assertion failure (debug builds) or NULL pointer dereference (release builds)
• Affected: Any application using ImageMagick to process user-supplied MSL files

Fuzzer

This issue was discovered using a custom MSL fuzzer:

#include <cstdint>
#include <Magick++/Blob.h>
#include <Magick++/Image.h>
#include "utils.cc"

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
{
  if (IsInvalidSize(Size))
    return(0);
  try
  {
    const Magick::Blob blob(Data, Size);
    Magick::Image image;
    image.magick("MSL");
    image.fileName("MSL:");
    image.read(blob);
  }
  catch (Magick::Exception)
  {
  }
  return(0);
}

This issue was found by Team FuzzingBrain @ Texas A&M University

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 contains an infinite recursion vulnerability in MSL script processing that can lead to stack overflow. The vulnerability exists in the ProcessMSLScript function, where attackers can craft malicious MSL scripts to trigger infinite recursion, ultimately causing stack overflow.(CVE-2026-23874)

ImageMagick is a widely used free and open-source software for image editing and manipulation. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability exists in the XBM image decoder (ReadXBMImage function). An attacker can exploit this by crafting a malicious XBM image file, causing controlled data to be written past the bounds of an allocated heap buffer during processing. Any operation that reads or identifies an image, such as common image upload and processing pipelines, can trigger this overflow, potentially leading to arbitrary code execution or application crash.(CVE-2026-23876)

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.(CVE-2026-23952)

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):

A vulnerability exists in ImageMagick's BilateralBlur functionality where an invalid pointer is released when memory allocation fails, potentially leading to application crashes or security risks.(CVE-2026-22770)

ImageMagick contains an infinite recursion vulnerability in MSL script processing that can lead to stack overflow. The vulnerability exists in the ProcessMSLScript function, where attackers can craft malicious MSL scripts to trigger infinite recursion, ultimately causing stack overflow.(CVE-2026-23874)

ImageMagick is a widely used free and open-source software for image editing and manipulation. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability exists in the XBM image decoder (ReadXBMImage function). An attacker can exploit this by crafting a malicious XBM image file, causing controlled data to be written past the bounds of an allocated heap buffer during processing. Any operation that reads or identifies an image, such as common image upload and processing pipelines, can trigger this overflow, potentially leading to arbitrary code execution or application crash.(CVE-2026-23876)

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.(CVE-2026-23952)

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):

A vulnerability exists in ImageMagick's BilateralBlur functionality where an invalid pointer is released when memory allocation fails, potentially leading to application crashes or security risks.(CVE-2026-22770)

ImageMagick contains an infinite recursion vulnerability in MSL script processing that can lead to stack overflow. The vulnerability exists in the ProcessMSLScript function, where attackers can craft malicious MSL scripts to trigger infinite recursion, ultimately causing stack overflow.(CVE-2026-23874)

ImageMagick is a widely used free and open-source software for image editing and manipulation. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability exists in the XBM image decoder (ReadXBMImage function). An attacker can exploit this by crafting a malicious XBM image file, causing controlled data to be written past the bounds of an allocated heap buffer during processing. Any operation that reads or identifies an image, such as common image upload and processing pipelines, can trigger this overflow, potentially leading to arbitrary code execution or application crash.(CVE-2026-23876)

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.(CVE-2026-23952)

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):

A vulnerability exists in ImageMagick's BilateralBlur functionality where an invalid pointer is released when memory allocation fails, potentially leading to application crashes or security risks.(CVE-2026-22770)

ImageMagick contains an infinite recursion vulnerability in MSL script processing that can lead to stack overflow. The vulnerability exists in the ProcessMSLScript function, where attackers can craft malicious MSL scripts to trigger infinite recursion, ultimately causing stack overflow.(CVE-2026-23874)

ImageMagick is a widely used free and open-source software for image editing and manipulation. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability exists in the XBM image decoder (ReadXBMImage function). An attacker can exploit this by crafting a malicious XBM image file, causing controlled data to be written past the bounds of an allocated heap buffer during processing. Any operation that reads or identifies an image, such as common image upload and processing pipelines, can trigger this overflow, potentially leading to arbitrary code execution or application crash.(CVE-2026-23876)

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.(CVE-2026-23952)

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):

A vulnerability exists in ImageMagick's BilateralBlur functionality where an invalid pointer is released when memory allocation fails, potentially leading to application crashes or security risks.(CVE-2026-22770)

ImageMagick contains an infinite recursion vulnerability in MSL script processing that can lead to stack overflow. The vulnerability exists in the ProcessMSLScript function, where attackers can craft malicious MSL scripts to trigger infinite recursion, ultimately causing stack overflow.(CVE-2026-23874)

ImageMagick is a widely used free and open-source software for image editing and manipulation. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability exists in the XBM image decoder (ReadXBMImage function). An attacker can exploit this by crafting a malicious XBM image file, causing controlled data to be written past the bounds of an allocated heap buffer during processing. Any operation that reads or identifies an image, such as common image upload and processing pipelines, can trigger this overflow, potentially leading to arbitrary code execution or application crash.(CVE-2026-23876)

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.(CVE-2026-23952)

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):

A vulnerability exists in ImageMagick's BilateralBlur functionality where an invalid pointer is released when memory allocation fails, potentially leading to application crashes or security risks.(CVE-2026-22770)

ImageMagick contains an infinite recursion vulnerability in MSL script processing that can lead to stack overflow. The vulnerability exists in the ProcessMSLScript function, where attackers can craft malicious MSL scripts to trigger infinite recursion, ultimately causing stack overflow.(CVE-2026-23874)

ImageMagick is a widely used free and open-source software for image editing and manipulation. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability exists in the XBM image decoder (ReadXBMImage function). An attacker can exploit this by crafting a malicious XBM image file, causing controlled data to be written past the bounds of an allocated heap buffer during processing. Any operation that reads or identifies an image, such as common image upload and processing pipelines, can trigger this overflow, potentially leading to arbitrary code execution or application crash.(CVE-2026-23876)

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.(CVE-2026-23952)

ImageMagick is free and open-source software used for editing and manipulating digital images. Versions 14.10.1 and below have a NULL pointer dereference vulnerability in the MSL (Magick Scripting Language) parser when processing <comment> tags before images are loaded. This can lead to DoS attack due to assertion failure (debug builds) or NULL pointer dereference (release builds). This issue is fixed in version 14.10.2.

• CVE-2026-25797: fix PostScript/HTML code injection via unsanitized filenames
• CVE-2026-25982: fix heap out-of-bounds read in DICOM colormap decoder
• CVE-2026-25968: fix stack buffer overflow in MSL opacity attribute processing
• CVE-2026-25986: fix heap buffer overflow write in YUV 4:2:2 decoder
• CVE-2026-25987: fix heap buffer over-read in MAP image decoder
• CVE-2026-25970: fix signed integer overflow in SIXEL decoder
• CVE-2026-23952: fix NULL pointer dereference in MSL comment/label handlers
• CVE-2026-30883: fix heap buffer overflow in PNG profile writer
• CVE-2026-25988: fix MSL stack index not updated causing memory leak
• CVE-2026-27798: fix heap buffer over-read in WaveletDenoiseImage
• CVE-2026-25965: fix path traversal bypassing security policy

• CVE-2026-25797: fix PostScript/HTML code injection via unsanitized filenames
• CVE-2026-25982: fix heap out-of-bounds read in DICOM colormap decoder
• CVE-2026-25968: fix stack buffer overflow in MSL opacity attribute processing
• CVE-2026-25986: fix heap buffer overflow write in YUV 4:2:2 decoder
• CVE-2026-25987: fix heap buffer over-read in MAP image decoder
• CVE-2026-25970: fix signed integer overflow in SIXEL decoder
• CVE-2026-23952: fix NULL pointer dereference in MSL comment/label handlers
• CVE-2026-30883: fix heap buffer overflow in PNG profile writer
• CVE-2026-25988: fix MSL stack index not updated causing memory leak
• CVE-2026-27798: fix heap buffer over-read in WaveletDenoiseImage
• CVE-2026-25965: fix path traversal bypassing security policy

• SECURITY UPDATE: stack buffer overflow in msl.c (attribute handling), path traversal bypass of security policy, XSS in HTML coder output, and MSL attribute overflow
  • debian/patches/CVE-2026-25797_CVE-2026-25965_CVE-2026-25968_CVE-2026-25982.patch: Fix memory leaks, stack overflows, integer overflows and out‑of‑bounds reads; add bounds checks, validate DCM entry sizes, sanitize PostScript filenames, canonicalize paths and free resources; escape user-controlled strings written as raw HTML in the HTML coder; cause was unsafe header and filename parsing, incorrect assumptions about byte counts, path resolution, unnormalized path matching allowing policy bypass, and unescaped HTML output enabling cross-site scripting.
  • CVE-2026-25797
  • CVE-2026-25965
  • CVE-2026-25968
  • CVE-2026-25982
• SECURITY UPDATE: null pointer dereference in msl.c (repage/roll handlers)
  • debian/patches/CVE-2026-25983.patch: move image null‑checks before accessing image attributes in the repage and roll MSL tag handlers; cause was dereferencing the image pointer for page geometry and dimensions before verifying the image was defined.
  • CVE-2026-25983
• SECURITY UPDATE: infinite recursion via crafted MSL/SVG/MVG files
  • debian/patches/CVE-2026-25971.patch: add global Splay tree guards in MSL and SVG coders to detect and reject recursive image references; block dangerous protocols (ftp, http, mvg, vid) in DrawPrimitive; cause was unbounded recursion through nested image reads.
  • CVE-2026-25971
• SECURITY UPDATE: null pointer dereference in msl.c (comment/label handlers)
  • debian/patches/CVE-2026-23952.patch: add image null-checks before accessing image properties in the comment and label MSL end-element handlers; cause was dereferencing the image pointer for DeleteImageProperty before verifying the image was defined.
  • CVE-2026-23952
• SECURITY UPDATE: MSLPushImage return value not captured
  • debian/patches/CVE-2026-25988.patch: change MSLPushImage to return the new image index and capture the return value in the MSL image tag handler; cause was the local index variable not being updated after pushing a new image onto the stack.
  • CVE-2026-25988

• SECURITY UPDATE: stack buffer overflow in msl.c (attribute handling), path traversal bypass of security policy, XSS in HTML coder output, and MSL attribute overflow
  • debian/patches/CVE-2026-25797_CVE-2026-25965_CVE-2026-25968_CVE-2026-25982.patch: Fix memory leaks, stack overflows, integer overflows and out‑of‑bounds reads; add bounds checks, validate DCM entry sizes, sanitize PostScript filenames, canonicalize paths and free resources; escape user-controlled strings written as raw HTML in the HTML coder; cause was unsafe header and filename parsing, incorrect assumptions about byte counts, path resolution, unnormalized path matching allowing policy bypass, and unescaped HTML output enabling cross-site scripting.
  • CVE-2026-25797
  • CVE-2026-25965
  • CVE-2026-25968
  • CVE-2026-25982
• SECURITY UPDATE: null pointer dereference in msl.c (repage/roll handlers)
  • debian/patches/CVE-2026-25983.patch: move image null‑checks before accessing image attributes in the repage and roll MSL tag handlers; cause was dereferencing the image pointer for page geometry and dimensions before verifying the image was defined.
  • CVE-2026-25983
• SECURITY UPDATE: infinite recursion via crafted MSL/SVG/MVG files
  • debian/patches/CVE-2026-25971.patch: add global Splay tree guards in MSL and SVG coders to detect and reject recursive image references; block dangerous protocols (ftp, http, mvg, vid) in DrawPrimitive; cause was unbounded recursion through nested image reads.
  • CVE-2026-25971
• SECURITY UPDATE: null pointer dereference in msl.c (comment/label handlers)
  • debian/patches/CVE-2026-23952.patch: add image null-checks before accessing image properties in the comment and label MSL end-element handlers; cause was dereferencing the image pointer for DeleteImageProperty before verifying the image was defined.
  • CVE-2026-23952
• SECURITY UPDATE: MSLPushImage return value not captured
  • debian/patches/CVE-2026-25988.patch: change MSLPushImage to return the new image index and capture the return value in the MSL image tag handler; cause was the local index variable not being updated after pushing a new image onto the stack.
  • CVE-2026-25988

• SECURITY UPDATE: NULL pointer dereference in MSL parser
  • debian/patches/CVE-2026-23952.patch: add NULL check for image before DeleteImageProperty in comment and label tag handlers
  • CVE-2026-23952
• SECURITY UPDATE: memory leak in MSL parser
  • debian/patches/CVE-2026-25988.patch: return stack index from MSLPushImage to ensure correct image slot tracking
  • CVE-2026-25988
• SECURITY UPDATE: signed integer overflow in SIXEL decoder
  • debian/patches/CVE-2026-25970.patch: use ssize_t for position and offset variables to prevent integer overflow in sixel_decode
  • CVE-2026-25970

• SECURITY UPDATE: fix vulnerability in MSL coder
  • debian/patches/CVE-2026-25988.patch: fix vulnerability in MSL coder
  • CVE-2026-25988
• SECURITY UPDATE: fix path traversal via policy bypass
  • debian/patches/CVE-2026-25965.patch: fix path traversal via policy bypass
  • CVE-2026-25965
• SECURITY UPDATE: fix vulnerability in PNG coder
  • debian/patches/CVE-2026-30883.patch: fix vulnerability in PNG coder
  • CVE-2026-30883
• SECURITY UPDATE: fix NULL pointer dereference in MSL parser
  • debian/patches/CVE-2026-23952.patch: fix NULL pointer dereference in MSL parser
  • CVE-2026-23952
• SECURITY UPDATE: fix vulnerability in sixel coder
  • debian/patches/CVE-2026-25970.patch: fix vulnerability in sixel coder
  • CVE-2026-25970

These are all security issues fixed in the ImageMagick-7.1.2.13-2.1 package on the GA media of openSUSE Tumbleweed.

This update for ImageMagick fixes the following issues:

• CVE-2026-22770: improper pointer initialization can cause denial of service (bsc#1256969).
• CVE-2026-23874: manipulation of digital images can lead to stack overflow (bsc#1256976).
• CVE-2026-23876: ImageMagick: maliciously crafted image can lead to heap buffer overflow (bsc#1256962).
• CVE-2026-23952: processing comment tag can cause null pointer dereference (bsc#1257076).
• CVE-2026-24481: Possible Heap Information Disclosure in PSD ZIP Decompression (bsc#1258743).
• CVE-2026-24484: denial of service vulnerability via multi-layer nested MVG to SVG conversion (bsc#1258790).
• CVE-2026-24485: denial of service via malformed PCD file processing (bsc#1258791).
• CVE-2026-25576: Out of bounds read in multiple coders that read raw pixel data (bsc#1258748).
• CVE-2026-25637: Denial of Service via crafted image due to memory leak (bsc#1258759).
• CVE-2026-25638: Denial of Service due to memory leak in image processing (bsc#1258793).
• CVE-2026-25794: Heap-buffer-overflow via signed integer overflow in WriteUHDRImage when writing UHDR images with large dimensions (bsc#1258749).
• CVE-2026-25795: Denial of Service due to NULL pointer dereference during temporary file creation failure (bsc#1258792).
• CVE-2026-25796: Memory leak of watermark Image object in ReadSTEGANOImage on multiple error/early-return paths (bsc#1258757).
• CVE-2026-25797: Code injection in various encoders (bsc#1258770).
• CVE-2026-25798: NULL Pointer Dereference in ClonePixelCacheRepository via crafted image (bsc#1258787).
• CVE-2026-25799: Division-by-Zero in YUV sampling factor validation leads to crash (bsc#1258786).
• CVE-2026-25897: Out-of-bounds heap write via integer overflow in sun decoder (bsc#1258799).
• CVE-2026-25898: Information disclosure or denial of service via crafted image with invalid pixel index (bsc#1258807).
• CVE-2026-25965: Policy bypass through path traversal allows reading restricted content despite secured policy (bsc#1258785).
• CVE-2026-25966: Security Policy Bypass through config/policy-secure.xml via "fd handler" leads to stdin/stdout access (bsc#1258780).
• CVE-2026-25967: Stack buffer overflow in FTXT reader via oversized integer field (bsc#1258779).
• CVE-2026-25968: MSL attribute stack buffer overflow leads to out of bounds write (bsc#1258776).
• CVE-2026-25969: Memory Leak in coders/ashlar.c (bsc#1258775).
• CVE-2026-25970: Memory corruption and denial of service via signed integer overflow in SIXEL decoder (bsc#1258802).
• CVE-2026-25971: MSL: Stack overflow in ProcessMSLScript (bsc#1258774).
• CVE-2026-25982: Heap Out-of-Bounds Read in DCM Decoder (bsc#1258772).
• CVE-2026-25983: Denial of service via crafted MSL script (bsc#1258805).
• CVE-2026-25985: Memory allocation with excessive without limits in the internal SVG decoder (bsc#1258812).
• CVE-2026-25986: Denial of Service via malicious YUV image processing (bsc#1258818).
• CVE-2026-25987: Memory disclosure and denial of service via crafted MAP files (bsc#1258821).
• CVE-2026-25988: Denial of Service due to memory leak in image processing (bsc#1258810).
• CVE-2026-25989: Integer overflow or wraparound and incorrect conversion between numeric types in the internal SVG decoder (bsc#1258771).
• CVE-2026-26066: Infinite loop when writing IPTCTEXT leads to denial of service via crafted profile (bsc#1258769).
• CVE-2026-26283: Possible infinite loop in JPEG encoder when using jpeg: extent (bsc#1258767).
• CVE-2026-26284: Heap overflow in pcd decoder leads to out of bounds read (bsc#1258765).
• CVE-2026-26983: Invalid MSL <map> can result in a use after free (bsc#1258763).
• CVE-2026-27798: Heap Buffer Over-read in WaveletDenoise when processing small images (bsc#1259018).
• CVE-2026-27799: ImageMagick has a heap Buffer Over-read in its DJVU image format handler (bsc#1259017).

This update for ImageMagick fixes the following issues:

• CVE-2026-23874: manipulation of digital images can lead to stack overflow (bsc#1256976).
• CVE-2026-23876: maliciously crafted image can lead to heap buffer overflow (bsc#1256962).
• CVE-2026-23952: processing comment tag can cause null pointer dereference (bsc#1257076).

This update for ImageMagick fixes the following issues:

• CVE-2026-22770: improper pointer initialization can cause denial of service (bsc#1256969).
• CVE-2026-23874: manipulation of digital images can lead to stack overflow (bsc#1256976).
• CVE-2026-23876: maliciously crafted image can lead to heap buffer overflow (bsc#1256962).
• CVE-2026-23952: processing comment tag can cause null pointer dereference (bsc#1257076).

This update for ImageMagick fixes the following issues:

• CVE-2026-22770: improper pointer initialization can cause denial of service (bsc#1256969).
• CVE-2026-23874: manipulation of digital images can lead to stack overflow (bsc#1256976).
• CVE-2026-23876: maliciously crafted image can lead to heap buffer overflow (bsc#1256962).
• CVE-2026-23952: processing comment tag can cause null pointer dereference (bsc#1257076).

This update for ImageMagick fixes the following issues:

• CVE-2026-23874: manipulation of digital images can lead to stack overflow (bsc#1256976).
• CVE-2026-23876: maliciously crafted image can lead to heap buffer overflow (bsc#1256962).
• CVE-2026-23952: processing comment tag can cause null pointer dereference (bsc#1257076).

It was discovered that ImageMagick did not properly process certain tags prior to an image being loaded. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service. (CVE-2026-23952)

It was discovered that ImageMagick did not properly handle temporary file creation failures. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service. (CVE-2026-25795)

It was discovered that ImageMagick did not properly manage memory under certain conditions. An attacker could possibly use this issue to cause ImageMagick to consume resources, resulting in a denial of service. (CVE-2026-25796)

It was discovered that ImageMagick incorrectly handled certain specially crafted image files. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service. (CVE-2026-25798)

It was discovered that ImageMagick did not properly validate certain YUV sampling factors. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service. (CVE-2026-25799)

It was discovered that ImageMagick incorrectly handled certain specially crafted image files. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-25970)

It was discovered that ImageMagick incorrectly managed memory when handling certain specially crafted image files. An attacker could possibly use this issue to cause ImageMagick to consume resources, resulting in a denial of service. (CVE-2026-25988)

It was discovered that ImageMagick incorrectly handled certain crafted image profiles. An attacker could possibly use this issue to cause ImageMagick to consume available resources, resulting in a denial of service. (CVE-2026-26066)

It was discovered that ImageMagick incorrectly handled large image profiles when encoding PNG images. An attacker could use this issue to cause ImageMagick to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-30883)

Kamil Frankowicz discovered that ImageMagick incorrectly handled certain XML data. An attacker could possibly use this issue to cause ImageMagick to crash, resulting in a denial of service. (CVE-2026-32636)