journal: check validity of PID field in syslog/kmsg earlier

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Then, let's make syslog_parse_identifier() returns PID as pid_t, rather
than the string.

This also makes the function refuse ridiculously long identifier.

Fixes #40456.
Fixes oss-fuzz#477990732 (https://issues.oss-fuzz.com/issues/477990732).

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This commit is contained in:

Yu Watanabe

2026-02-03 21:55:49 +09:00

parent dd839b1463

commit eb5b797d7c

5 changed files with 67 additions and 51 deletions

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test/fuzz/fuzz-journald-syslog/oss-fuzz-477990732

+1

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