Description
In the Linux kernel, the following vulnerability has been resolved: virt: tdx-guest: Fix handling of host controlled 'quote' buffer length Validate host controlled value `quote_buf->out_len` that determines how many bytes of the quote are copied out to guest userspace. In TDX environments with remote attestation, quotes are not considered private, and can be forwarded to an attestation server. Catch scenarios where the host specifies a response length larger than the guest's allocation, or otherwise races modifying the response while the guest consumes it. This prevents contents beyond the pages allocated for `quote_buf` (up to TSM_REPORT_OUTBLOB_MAX) from being read out to guest userspace, and possibly forwarded in attestation requests. Recall that some deployments want per-container configs-tsm-report interfaces, so the leak may cross container protection boundaries, not just local root.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
f4738f56d1dc62aaba69b33702a5ab098f1b8c63 to < a079a62883e3365de592cea9f7a669d8115433b0affectedf4738f56d1dc62aaba69b33702a5ab098f1b8c63 to < 6f3c8795ae9ba74fa10fe979293d1904712d3fb1affectedf4738f56d1dc62aaba69b33702a5ab098f1b8c63 to < 02ca2d9d197723696cb9cc0cb159eb7e8bf5f89baffectedf4738f56d1dc62aaba69b33702a5ab098f1b8c63 to < c3fd16c3b98ed726294feab2f94f876290bf7b61affected
Linux Linux
Default version status: affected
6.7affected0 to < 6.7unaffected6.12.80 to ≤ 6.12.*unaffected6.18.21 to ≤ 6.18.*unaffected6.19.11 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected