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.

Description

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.

Affected Products

References

• https://dev.gnupg.org/T8045(Exploit, Product)
• https://www.openwall.com/lists/oss-security/2026/01/27/8(Mailing List, Third Party Advisory)