CVE-2022-23645 | BDVDB-2026-170402 Detail
stefanbergerswtpm
Description#
swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read. A specially crafted header of swtpm's state, where the blobheader's hdrsize indicator has an invalid value, may cause an out-of-bounds access when the byte array representing the state of the TPM is accessed. This will likely crash swtpm or prevent it from starting since the state cannot be understood. Users should upgrade to swtpm v0.5.3, v0.6.2, or v0.7.1 to receive a patch. There are currently no known workarounds.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: local.
Weaknesses#
- CWE-125 Out-of-bounds Read
References#
- https://github.com/stefanberger/swtpm/security/advisories/GHSA-2qgm-8xf4-3hqw
- https://github.com/stefanberger/swtpm/commit/9f740868fc36761de27df3935513bdebf8852d19
- https://github.com/stefanberger/swtpm/releases/tag/v0.5.3
- https://github.com/stefanberger/swtpm/releases/tag/v0.6.2
- https://github.com/stefanberger/swtpm/releases/tag/v0.7.1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WL735FW266GO4C2JX4CJBOIOB7R7AY5A/
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.