Summary
It was discovered that ImageMagick incorrectly handled certain images
when using the wavelet-denoise operator. An attacker could possibly use
this issue to trigger a heap buffer over-read, resulting in information
disclosure. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS,
Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-27798)
It was discovered that ImageMagick incorrectly handled certain DJVU
images. An attacker could possibly use this issue to trigger a heap
buffer over-read, resulting in information disclosure. (CVE-2026-27799)
It was discovered that ImageMagick incorrectly handled certain MNG
images. An attacker could possibly use this issue to trigger a stack
buffer overflow, resulting in arbitrary code execution. (CVE-2026-28690)
It was discovered that ImageMagick incorrectly handled certain JBIG
images. An attacker could possibly use this issue to trigger a pointer
dereference error, resulting in a denial of service. (CVE-2026-28691)
It was discovered that ImageMagick incorrectly handled certain MAT
images. An attacker could possibly use this issue to trigger a heap
buffer over-read, resulting in information disclosure. (CVE-2026-28692)
It was discovered that ImageMagick incorrectly handled certain DIB
images. An attacker could possibly use this issue to trigger an integer
overflow, resulting in arbitrary code execution. (CVE-2026-28693)
Fixed packages 6
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | imagemagick | 8:6.7.7.10-6ubuntu3.13+esm22 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | imagemagick | 8:6.8.9.9-7ubuntu5.16+esm21 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | imagemagick | 8:6.9.7.4+dfsg-16ubuntu6.15+esm13 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | imagemagick | 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11 |
| Ubuntu · Pro 22.04 LTS Pro:22.04:LTS | imagemagick | 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11 |
| Ubuntu · Pro 24.04 LTS Pro:24.04:LTS | imagemagick | 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10 |