CVE-2021-46922
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:…
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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/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()
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/39c8d760d44cb3fa0d67e8cd505df81cf4d80999Patch
- https://git.kernel.org/stable/c/9d5171eab462a63e2fbebfccf6026e92be018f20Patch
- https://git.kernel.org/stable/c/bf84ef2dd2ccdcd8f2658476d34b51455f970ce4Patch
- https://git.kernel.org/stable/c/39c8d760d44cb3fa0d67e8cd505df81cf4d80999Patch
- https://git.kernel.org/stable/c/9d5171eab462a63e2fbebfccf6026e92be018f20Patch
- https://git.kernel.org/stable/c/bf84ef2dd2ccdcd8f2658476d34b51455f970ce4Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.