CVE-2026-86423

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 before 7.1.2-30 and 6.9.13-55 fails to properly lower the memory budget when an operation inside OpenPixelCache fails. Repeated triggering of such failures can exhaust the process memory budget and result in a denial of service.(CVE-2026-86420)

ImageMagick before 7.1.2-30 and 6.9.13-55 contains a memory leak in the MSL image decoder. A crafted MSL image triggers memory allocation without proper deallocation, allowing an attacker to exhaust memory and cause a denial of service.(CVE-2026-86421)

ImageMagick before 7.1.2-30 and 6.9.x before 6.9.13-55 contains a heap-use-after-free vulnerability in the GetList method of PerlMagick. A crafted call to the GetList method can trigger the use-after-free, resulting in a crash (denial of service).(CVE-2026-86423)

ImageMagick before 7.1.2-30 and 6.9.13-55 contains a time-of-check-time-of-use (TOCTOU) vulnerability in the video decoder that allows attackers to bypass path policy write restrictions via symlink swaps. An attacker can replace a symlink between policy validation (check-time) and the file write operation (use-time) to write to policy-denied locations.(CVE-2026-86424)

ImageMagick before 7.1.2-30 and 6.9.x before 6.9.13-55 contains a heap-use-after-free vulnerability in the Layer method of PerlMagick. An attacker who supplies a crafted list of images can trigger memory access after deallocation, resulting in a crash (denial of service).(CVE-2026-86425)

ImageMagick before 7.1.2-30 and 6.9.x before 6.9.13-55 contains a heap-use-after-free vulnerability in the GetList method of PerlMagick. A crafted call to the GetList method can trigger the use-after-free, resulting in a crash (denial of service).

• CVE-2026-86421: destroy the per-level draw_info clone when popping a <group> in MSLEndElement() (coders/msl.c) to fix a memory leak
• CVE-2026-86423: track already-seen images in a seen[] array in GetList() (PerlMagick) so a non-adjacent repeat is cloned, fixing a use-after-free

• CVE-2026-86421: destroy the per-level draw_info clone when popping a <group> in MSLEndElement() (coders/msl.c) to fix a memory leak
• CVE-2026-86423: track already-seen images in a seen[] array in GetList() (PerlMagick) so a non-adjacent repeat is cloned, fixing a use-after-free

• CVE-2026-86425: split a copy of the image list at the first NULL: image in the PerlMagick Layers method to prevent a heap use-after-free
• CVE-2026-86423: clone every image that appears more than once in a PerlMagick image list, not only adjacent repeats, so the same image is never linked into a list twice
• CVE-2026-86424: open the delegate output file without following symbolic links and check the write policy again after opening it, to prevent a symlink race from bypassing the path policy
• CVE-2026-34238: check the despeckle buffer size for integer overflow to prevent a heap buffer overflow on 32-bit systems

• CVE-2026-86425: split a copy of the image list at the first NULL: image in the PerlMagick Layers method to prevent a heap use-after-free
• CVE-2026-86423: clone every image that appears more than once in a PerlMagick image list, not only adjacent repeats, so the same image is never linked into a list twice
• CVE-2026-86424: open the delegate output file without following symbolic links and check the write policy again after opening it, to prevent a symlink race from bypassing the path policy
• CVE-2026-34238: check the despeckle buffer size for integer overflow to prevent a heap buffer overflow on 32-bit systems

Heap-use-after-free in Layer method of PerlMagick could result in a crash Path Policy TOCTOU symlink race bypass in the video decoder Heap-use-after-free in the GetList method of PerlMagick could result in a crash Memory Leak in MSL decoder Denial of service when exhausting the process memory budget Policy Bypass in UHDR encoder Division by Zero in FLIF encoder Null Pointer Dereference in PNM coder when hitting a memory limit Policy Bypass in PCD, CUBE and HALD decoder when using a specific command line option. Use after free in ImagesToBlob method

These are all security issues fixed in the ImageMagick-7.1.2.31-1.1 package on the GA media of openSUSE Tumbleweed.

This update for ImageMagick fixes the following issues:

• CVE-2026-86420: Denial of Service due to memory budget exhaustion (bsc#1279696).
• CVE-2026-86421: Denial of Service via memory leak in MSL decoder (bsc#1279711).
• CVE-2026-86423: Denial of service via heap-use-after-free in PerlMagick's GetList method (bsc#1279794).
• CVE-2026-86425: Denial of Service due to heap-use-after-free vulnerability (bsc#1279797).

This update for ImageMagick fixes the following issues:

• CVE-2026-86420: Denial of Service due to memory budget exhaustion (bsc#1279696).
• CVE-2026-86421: Denial of Service via memory leak in MSL decoder (bsc#1279711).
• CVE-2026-86423: Denial of service via heap-use-after-free in PerlMagick's GetList method (bsc#1279794).
• CVE-2026-86425: Denial of Service due to heap-use-after-free vulnerability (bsc#1279797).

This update for ImageMagick fixes the following issues:

• CVE-2026-86420: denial of Service due to memory budget exhaustion (bsc#1279696).
• CVE-2026-86421: denial of Service via memory leak in MSL decoder (bsc#1279711).
• CVE-2026-86423: denial of service via heap-use-after-free in PerlMagick's GetList method (bsc#1279794).
• CVE-2026-86425: denial of Service due to heap-use-after-free vulnerability (bsc#1279797).

This update for ImageMagick fixes the following issues:

• CVE-2026-86420: denial of Service due to memory budget exhaustion (bsc#1279696).
• CVE-2026-86421: denial of Service via memory leak in MSL decoder (bsc#1279711).
• CVE-2026-86423: denial of service via heap-use-after-free in PerlMagick's GetList method (bsc#1279794).
• CVE-2026-86425: denial of Service due to heap-use-after-free vulnerability (bsc#1279797).

This update for ImageMagick fixes the following issues:

• CVE-2026-62343: heap buffer over-write in morphology operation when an invalid kernel is provided (bsc#1272575).
• CVE-2026-62363: heap buffer over-write in fx operation (bsc#1272582).
• CVE-2026-62946: integer overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds (bsc#1272580).
• CVE-2026-64685: heap buffer over-read in BGR decoder due to missing end-of-file check (bsc#1272953).
• CVE-2026-66011: memory Leak when providing invalid options to the cli (bsc#1272577).
• CVE-2026-86420: denial of Service due to memory budget exhaustion (bsc#1279696).
• CVE-2026-86421: denial of Service via memory leak in MSL decoder (bsc#1279711).
• CVE-2026-86423: denial of service via heap-use-after-free in PerlMagick's GetList method (bsc#1279794).
• CVE-2026-86425: denial of Service due to heap-use-after-free vulnerability (bsc#1279797).
• CVE-2026-93586: use-after-free in the ImagesToBlob method can lead to a process crash (bsc#1281912).
• CVE-2026-93587: policy bypass in the PCD, CUBE and HALD coders can lead to extra memory allocation and a denial of service (bsc#1281909).
• CVE-2026-93588: NULL pointer dereference in the PNM coder can lead to a denial of service (bsc#1281910).
• CVE-2026-93589: division-by-zero flaw in the FLIF encoder can lead to a denial of service (bsc#1281911).
• GHSA-hc76-7mpc-qjqh: code injection in HTML encoder due to incomplete fix of CVE-2026-25797 (bsc#1272579).

This update for ImageMagick fixes the following issues:

• CVE-2026-86420: Denial of Service due to memory budget exhaustion (bsc#1279696).
• CVE-2026-86421: Denial of Service via memory leak in MSL decoder (bsc#1279711).
• CVE-2026-86423: Denial of service via heap-use-after-free in PerlMagick's GetList method (bsc#1279794).
• CVE-2026-86425: Denial of Service due to heap-use-after-free vulnerability (bsc#1279797).
• CVE-2026-93586: use-after-free in the ImagesToBlob method can lead to a process crash (bsc#1281912).
• CVE-2026-93587: policy bypass in the PCD, CUBE and HALD coders can lead to extra memory allocation and a denial of service (bsc#1281909).
• CVE-2026-93588: NULL pointer dereference in the PNM coder can lead to a denial of service (bsc#1281910).
• CVE-2026-93589: division-by-zero flaw in the FLIF encoder can lead to a denial of service (bsc#1281911).
• CVE-2026-93590: failure to perform policy checks during buffer allocation for image pixels in the UHDR encoder can lead to denial of service (bsc#1281913).
• CVE-2026-105083: security policy not applied when a user changes the DOCTYPE in the policy.xml file to something else that is valid xml (bsc#1284217).
• CVE-2026-106564: a crafted EXR image can cause the EXR decoder to write beyond a heap buffer, causing the process to crash (bsc#1284661).
• CVE-2026-106565: a missing end-of-file check while reading bzip2-compressed image data can cause an infinite loop (bsc#1284662).
• CVE-2026-106566: delegate symlink cleanup does not check the MAGICK_SHRED_PASSES environment variable, allowing a local privileged workflow to overwrite a file with random data (bsc#1284663).
• CVE-2026-106567: a crafted PSD file can trigger an integer-conversion error in the PSD decoder, causing an infinite loop and DoS (bsc#1284664).
• CVE-2026-106568: a crafted XMP profile embedded in an image can cause the profile parser to enter an infinite loop (bsc#1284665).
• CVE-2026-106570: an unauthenticated adjacent-network client can repeatedly connect to the distributed pixel cache server and exhaust its available connections, causing a DoS (bsc#1284667).
• CVE-2026-106571: a crafted local call to the GetVirtualPixels API can trigger an integer calculation error and write beyond a heap buffer, crashing the server process (bsc#1284668).
• CVE-2026-106572: a missing recursion-depth check in the CALS decoder allows a crafted CALS image to exhaust the call stack and terminate the process (bsc#1284669).
• CVE-2026-106573: a missing limit check in the MVG decoder allows a crafted MVG image to trigger an excessively long- running operation (bsc#1284671).
• CVE-2026-106574: a client connected to the distributed pixel cache server can send crafted pixel data that triggers a heap buffer overwrite and crash the server (bsc#1284672).
• CVE-2026-106575: a crafted Magick script can cause an opened file pointer to remain unclosed, allowing repeated processing to exhaust available file descriptors (bsc#1284673).
• CVE-2026-106576: a crafted XMP profile can trigger excessive work while the parser determines a rational value's numerator and denominator, causing a DoS (bsc#1284674).
• CVE-2026-106577: unescaped or untrimmed values can inject code into output generated by PostScript coders (bsc#1284675).
• CVE-2026-106578: a crafted image can cause an invalid memory free in the MVG decoder and crash the process (bsc#1284677).
• CVE-2026-106579: a crafted image can bypass an ImageMagick security policy that uses coder as its domain, potentially allowing data prohibited by the policy to be read (bsc#1284678).
• CVE-2026-107208: a crafted XMP profile can reach a recursion limit that is handled as a fatal condition instead of an ordinary exception, terminating the image-processing process (bsc#1284681).
• CVE-2026-107209: when ImageMagick is built without Cairo support, a crafted RSVG image that reaches a resource limit can cause a crash (bsc#1284682).
• CVE-2026-107210: a…