tls: stop recv() if initial process_rx_list gave us non-DATA

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: tls: stop recv() if initial process_rx_list gave us non-DATA If we have a non-DATA record on the rx_list and another record of the same type still on the queue, we will end up merging them: - process_rx_list copies the non-DATA record - we start the loop and process the first available record since it's of the same type - we break out of the loop since the record was not DATA Just check the record type and jump to the end in case process_rx_list did some work.

References

• https://git.kernel.org/stable/c/f310143961e2d9a0479fca117ce869f8aaecc140
• https://git.kernel.org/stable/c/31e10d6cb0c9532ff070cf50da1657c3acee9276
• https://git.kernel.org/stable/c/4338032aa90bd1d5b33a4274e8fa8347cda5ee09
• https://git.kernel.org/stable/c/6756168add1c6c3ef1c32c335bb843a5d1f99a75
• https://git.kernel.org/stable/c/3b952d8fdfcf6fd8ea0b8954bc9277642cf0977f
• https://git.kernel.org/stable/c/a4ed943882a8fc057ea5a67643314245e048bbdd
• https://git.kernel.org/stable/c/fdfbaec5923d9359698cbb286bc0deadbb717504