Medium [CVE-2026-56373] Use-after-free vulnerability in PDB decoder allows denial of service or limited data corruption.
This medium-severity Red Hat Linux advisory covers CVE-2026-56373 affecting Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat package: imagemagick.
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Summary
ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger this vulnerability by processing malicious PDB files to cause crashes or write a single zero byte to freed memory.
A flaw was found in ImageMagick. This use-after-free vulnerability (CWE-416) exists within the PDB (Program Database) decoder.
A remote attacker could exploit this by tricking a user into processing a specially crafted malicious PDB file. This could lead to a denial of service (DoS) due to application crashes or potentially allow for a single zero-byte write to freed memory, resulting in limited data corruption.
Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H). Weakness: CWE-825.
Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: imagemagick.
- < 7.1.2-15
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 4 days ago·verify at source
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