CVE-2021-46922 (GCVE-0-2021-46922)

Vulnerability from cvelistv5 – Published: 2024-02-27 09:36 – Updated: 2025-05-04 07:00
VLAI?
Title
KEYS: trusted: Fix TPM reservation for seal/unseal
Summary
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix TPM reservation for seal/unseal The original patch 8c657a0590de ("KEYS: trusted: Reserve TPM for seal and unseal operations") was correct on the mailing list: https://lore.kernel.org/linux-integrity/20210128235621.127925-4-jarkko@kernel.org/ But somehow got rebased so that the tpm_try_get_ops() in tpm2_seal_trusted() got lost. This causes an imbalanced put of the TPM ops and causes oopses on TIS based hardware. This fix puts back the lost tpm_try_get_ops()
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 67118bb78d72aab5b831f054a74ae856339a1974 , < bf84ef2dd2ccdcd8f2658476d34b51455f970ce4 (git)
Affected: 498b8fc1cdc13b57b02dd28544b18323900fae10 , < 39c8d760d44cb3fa0d67e8cd505df81cf4d80999 (git)
Affected: 8c657a0590de585b1115847c17b34a58025f2f4b , < 9d5171eab462a63e2fbebfccf6026e92be018f20 (git)
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    Linux Linux Affected: 5.10.20 , < 5.10.33 (semver)
Affected: 5.11.3 , < 5.11.17 (semver)
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