CVE-2021-46922

linux: In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix TPM reservation for seal/unse...

CVE-2021-46922 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-46922, released February 27, 2024. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0024
15th percentile

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()

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 12.15 (bookworm) 5.10.38-1 DEBIAN-CVE-2021-46922 Feb 27, 2024
linux · Debian 13.5 (trixie) 5.10.38-1 DEBIAN-CVE-2021-46922 Feb 27, 2024
linux · Debian 14 5.10.38-1 DEBIAN-CVE-2021-46922 Feb 27, 2024

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