Vito Caputo 9e5bd85a5f strxcpyx: don't overflow dest on strpcpyf truncate
When vsnprintf() truncated output, dest was advanced by the entire
size of dest leaving it just past the end.  Then the fall-through \0
termination scribbled one past the end.  The explicit null termination
is not necessary since vsnprintf() always includes the terminator even
when truncated.

Additionally these functions encourage calling with zero-length sizes,
while assuming non-zero sizes with potential buffer overflows.

Simply short-circuit the relevant functions when size == 0.

Fixes https://github.com/systemd/systemd/issues/6252
2017-07-03 06:45:53 -07:00
2017-06-25 13:19:10 -04:00
2017-05-07 20:16:47 -04:00
2015-08-31 18:12:37 +02:00
2015-06-03 00:22:53 +02:00
2014-06-04 15:41:10 -04:00
2017-05-05 21:19:04 -04:00
2016-10-06 11:53:58 -04:00
2017-04-24 18:48:10 +02:00

systemd - System and Service Manager

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General information about systemd can be found in the systemd Wiki.

Information about build requirements are provided in the README file.

Consult our NEWS file for information about what's new in the most recent systemd versions.

Please see the HACKING file for information how to hack on systemd and test your modifications.

Please see our Contribution Guidelines for more information about filing GitHub Issues and posting GitHub Pull Requests.

When preparing patches for systemd, please follow our Coding Style Guidelines.

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