This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-6727 →

UBUNTU-CVE-2026-6727

A timing side-channel vulnerability exists in the RSA OAEP decryption implementation. A privileged local attacker with access to the TPM command inter...

Original description

The description as published by the source.

A timing side-channel vulnerability exists in the RSA OAEP decryption implementation. A privileged local attacker with access to the TPM command interface may be able to exploit timing differences to recover information that could allow decryption of ciphertexts encrypted to TPM-managed RSA keys, including the RSA Endorsement Key (EK), including import blobs, credential blobs, and session salts. Under certain conditions, this may also enable the forgery of TPM 2.0 attestations. Refer to TCGVRT0011.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:22.04:LTS libtpms

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:24.04:LTS libtpms

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.10 libtpms

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.04:LTS libtpms

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Original description

Affected packages

References