AZL-53849
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-53849.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-53849
- Upstream
- Published
- 2024-11-19T18:15:27Z
- Modified
- 2026-04-01T05:18:08.922667Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2024-53085 affecting package kernel for versions less than 6.6.64.2-9
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
tpm: Lock TPM chip in tpmpmsuspend() first
Setting TPMCHIPFLAGSUSPENDED in the end of tpmpmsuspend() can be racy according, as this leaves window for tpmhwrng_read() to be called while the operation is in progress. The recent bug report gives also evidence of this behaviour.
Aadress this by locking the TPM chip before checking any chip->flags both in tpmpmsuspend() and tpmhwrngread(). Move TPMCHIPFLAGSUSPENDED check inside tpmget_random() so that it will be always checked only when the lock is reserved.
- References