Bug 2565234 (CVE-2026-120457)

Summary: CVE-2026-120457 libaec: libaec: Denial of Service via out-of-bounds read in m_se_decode()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin, rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in libaec. An attacker can cause a Denial of Service (DoS) or information disclosure by supplying a specially crafted compressed data stream. Due to an out-of-bounds read vulnerability in the decoding function (m_se_decode), an overlong sequence bypasses bounds checking, causing the application to crash or leak adjacent memory into decoded output.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-11-02 15:59:04 UTC
libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.