Bug 2570891 (CVE-2026-125207)

Summary: CVE-2026-125207 ffmpeg: ffmpeg: Denial of Service via excessive memory allocation in Interplay ACM decoder
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in FFmpeg. An attacker could exploit this vulnerability by enticing a user or automated processing service to open a specially crafted Interplay ACM audio file. When parsing the malicious file, the Interplay ACM decoder attempts to allocate an excessive amount of memory based on attacker-controlled block sizes, leading to memory exhaustion and a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 20:29:04 UTC 
FFmpeg through 9.0.2 contains an uncontrolled memory allocation vulnerability in the Interplay ACM decoder that allows attackers to exhaust memory via an attacker-controlled block size. Attackers can supply a crafted ACM file with maximum level and row count in extradata, making decode_init() allocate nearly a gigabyte and deny service.