Bug 2433464 (CVE-2026-24882)

Summary: CVE-2026-24882 GnuPG: GnuPG: Stack-based buffer overflow in tpm2daemon allows arbitrary code execution
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: crizzo, gtanzill, jbuscemi, jmitchel, kshier, teagle
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in GnuPG. This vulnerability, a stack-based buffer overflow, occurs in the `tpm2daemon` component when processing PKDECRYPT commands for cryptographic keys secured by a Trusted Platform Module (TPM). A local attacker could exploit this to execute unauthorized code, potentially gaining full control of the system, or disrupt its operation, leading to a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2433662, 2433663, 2433664, 2433665    
Bug Blocks:    

Description OSIDB Bzimport 2026-01-27 19:01:23 UTC 
In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for TPM-backed RSA and ECC keys.
Comment 1 errata-xmlrpc 2026-02-16 11:25:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:2719 https://access.redhat.com/errata/RHSA-2026:2719
Comment 2 errata-xmlrpc 2026-02-16 15:52:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:2753 https://access.redhat.com/errata/RHSA-2026:2753