Bug 2461068 (CVE-2026-41990)

Summary: CVE-2026-41990 Libgcrypt: Libgcrypt: Denial of Service or data integrity issues from missing bounds check during Dilithium signing.
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: adudiak, caswilli, gotiwari, jgrulich, jhorak, kaycoth, kshier, mvyas, rhel-process-autobot, stcannon, teagle, tpopela, watson-tool-maintainers, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Libgcrypt. During Dilithium signing operations, the library fails to perform a bounds check when writing to a static array. While the data involved is not directly controlled by an attacker, this vulnerability could lead to memory corruption, potentially resulting in a denial of service (DoS) or affecting data integrity.
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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 2026-04-23 05:01:43 UTC
Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.