SB2026040101 - Ubuntu update for imagemagick
Published: April 1, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 secuirty vulnerabilities.
1) NULL pointer dereference (CVE-ID: CVE-2026-23952)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in MSL parser within "comment" tag before image load. A remote user can pass specially crafted data to the application and perform a denial of service (DoS) attack.
2) NULL pointer dereference (CVE-ID: CVE-2026-25795)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the "ReadSFWImage()" function. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
3) Memory leak (CVE-ID: CVE-2026-25796)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in the "ReadSTEGANOImage()" function on multiple error/early-return paths. A remote attacker can force the application to leak memory and perform denial of service attack.
4) NULL pointer dereference (CVE-ID: CVE-2026-25798)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in ClonePixelCacheRepository. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
5) Division by zero (CVE-ID: CVE-2026-25799)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the divide-by-zero issue in YUV sampling factor validation. A remote attacker can cause a denial of service condition on the target system.
6) Integer overflow (CVE-ID: CVE-2026-25970)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to integer overflow in SIXEL decoder. A remote attacker can pass specially crafted data to the application, trigger integer overflow and cause a denial of service condition on the target system.
7) Memory leak (CVE-ID: CVE-2026-25988)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in msl.c. A remote attacker can force the application to leak memory and perform denial of service attack.
8) Resource exhaustion (CVE-ID: CVE-2026-26066)
The vulnerability allows a local attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources when writing IPTCTEXT. A local attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
9) Heap-based buffer overflow (CVE-ID: CVE-2026-30883)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when writing extremely large image profile in the PNG encoder. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and cause a denial of service condition on the target system.
10) Heap-based buffer overflow (CVE-ID: CVE-2026-32636)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the NewXMLTree method. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.