[openssl/openssl] df6e80: statem: fix missing fatal if valid_flags mfail in ...

  Branch: refs/heads/openssl-3.6
  Home:   https://github.com/openssl/openssl
  Commit: df6e8057821cea88250dc0cf9d1b30f4ea5a9eed
      https://github.com/openssl/openssl/commit/df6e8057821cea88250dc0cf9d1b30f4ea5a9eed
  Author: Jakub Zelenka <[email protected]>
  Date:   2026-06-03 (Wed, 03 Jun 2026)

  Changed paths:
    M ssl/statem/statem_clnt.c

  Log Message:
  -----------
  statem: fix missing fatal if valid_flags mfail in process cert req

It is a contract of tls process functions to trigger fatal error if they
fail. This is not being done in checking result of s->s3.tmp.valid_flags
allocation. If this happens, it triggers alert in read_state_machine()
for READ_STATE_BODY state that calls this process function. It calls
check_fatal() if MSG_PROCESS_ERROR is returned and the assert in it
fails because no error is triggered.

The fix just adds the fatal and also uses MSG_PROCESS_ERROR macro as
return value instead of hard coded 0.

Reviewed-by: Milan Broz <[email protected]>
Reviewed-by: Paul Yang <[email protected]>
MergeDate: Wed Jun  3 11:34:13 2026
(Merged from https://github.com/openssl/openssl/pull/31338)



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