SB2026100197 - Ubuntu update for imagemagick

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Main Vulnerability Database SB2026100197

SB2026100197 - Ubuntu update for imagemagick

Published: October 1, 2026

Security Bulletin ID SB2026100197
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 17% Low 83%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2026-56367)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the PSB (PSD v2) RLE decoding path. A remote attacker can trigger an out-of-bounds read error and read contents of memory on the system.


2) Use-after-free (CVE-ID: CVE-2026-93586)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to use-after-free in the ImagesToBlob method when processing images. A remote attacker can trigger the use-after-free condition to cause a denial of service.


3) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-93587)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to allocation of resources without limits or throttling in the PCD decoder when providing a specific command-line option. A local user can provide the specific command-line option to cause extra memory allocation and cause a denial of service.


4) NULL pointer dereference (CVE-ID: CVE-2026-93588)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to null pointer dereference in the PNM coder when hitting a memory limit. A remote user can cause the PNM coder to hit a memory limit to cause a denial of service.


5) Division by zero (CVE-ID: CVE-2026-93589)

CWE-ID: CWE-369 - Divide By Zero

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to division by zero in the FLIF encoder when processing an incorrect ticks-per-second value. A remote attacker can provide an incorrect ticks-per-second value to cause a denial of service.


6) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-93590)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to allocation of resources without limits or throttling in the UHDR encoder when allocating a buffer that contains all the pixels of an image. A remote attacker can cause the encoder to allocate a buffer containing all the pixels of an image to cause a denial of service.


Remediation

Install update from vendor's website.

References