CVE-2021-46922

Published: Feb 27, 2024

Modified: May 11, 2026

PUBLISHED

Description

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/[email protected]/ 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()

Vendor	Product	Versions
Linux	Linux	affected `67118bb78d72aab5b831f054a74ae856339a1974 - < bf84ef2dd2ccdcd8f2658476d34b51455f970ce4` affected `498b8fc1cdc13b57b02dd28544b18323900fae10 - < 39c8d760d44cb3fa0d67e8cd505df81cf4d80999` affected `8c657a0590de585b1115847c17b34a58025f2f4b - < 9d5171eab462a63e2fbebfccf6026e92be018f20`
Linux	Linux	affected `5.10.20 - < 5.10.33` affected `5.11.3 - < 5.11.17`

References

https://git.kernel.org/stable/c/bf84ef2dd2ccdcd8f2658476d34b51455f970ce4

https://git.kernel.org/stable/c/39c8d760d44cb3fa0d67e8cd505df81cf4d80999

https://git.kernel.org/stable/c/9d5171eab462a63e2fbebfccf6026e92be018f20

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CVE-2021-46922

Description

Affected Products

References