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. 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
Created swtpm tracking bugs for this issue: Affects: fedora-all [bug 2056493]
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2022:7472 https://access.redhat.com/errata/RHSA-2022:7472
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2022:8100 https://access.redhat.com/errata/RHSA-2022:8100
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2022-23645