Zbigniew Jędrzejewski-Szmek b835eeb4ec shared/seccomp: disallow pkey_mprotect the same as mprotect for W^X mappings (#7295)
MemoryDenyWriteExecution policy could be be bypassed by using pkey_mprotect
instead of mprotect to create an executable writable mapping.

The impact is mitigated by the fact that the man page says "Note that this
feature is fully available on x86-64, and partially on x86", so hopefully
people do not rely on it as a sole security measure.

Found by Karin Hossen and Thomas Imbert from Sogeti ESEC R&D.

https://bugs.launchpad.net/bugs/1725348
2017-11-12 17:28:48 +01:00
2017-10-19 00:26:52 +02:00
2015-08-31 18:12:37 +02:00
2017-10-05 17:39:50 +02:00
2015-06-03 00:22:53 +02:00
2014-06-04 15:41:10 -04:00
2016-10-06 11:53:58 -04:00
2017-11-12 14:27:25 +01:00

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.

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

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