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From: "Daniel P. Berrangé" <berrange@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Eduardo Otubo" <otubo@redhat.com>,
	"Daniel P. Berrangé" <berrange@redhat.com>
Subject: [PATCH 0/5] seccomp: fix hole in blocking forks
Date: Mon,  2 Aug 2021 14:02:58 +0100	[thread overview]
Message-ID: <20210802130303.3300108-1-berrange@redhat.com> (raw)

Blocking the 'fork' syscall on Linux is not sufficient to block the
'fork' C library function, because the latter is essentially always
implemented using the 'clone' syscall these days.

Blocking 'clone' is difficult as that also blocks pthread creation,
so it needs careful filtering.

Daniel P. Berrangé (5):
  seccomp: allow action to be customized per syscall
  seccomp: add unit test for seccomp filtering
  seccomp: fix blocking of process spawning
  seccomp: block use of clone3 syscall
  seccomp: block setns, unshare and execveat syscalls

 MAINTAINERS               |   1 +
 softmmu/qemu-seccomp.c    | 282 +++++++++++++++++++++++++++++---------
 tests/unit/meson.build    |   4 +
 tests/unit/test-seccomp.c | 269 ++++++++++++++++++++++++++++++++++++
 4 files changed, 490 insertions(+), 66 deletions(-)
 create mode 100644 tests/unit/test-seccomp.c

-- 
2.31.1




             reply	other threads:[~2021-08-02 13:04 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-02 13:02 Daniel P. Berrangé [this message]
2021-08-02 13:02 ` [PATCH 1/5] seccomp: allow action to be customized per syscall Daniel P. Berrangé
2021-08-02 13:03 ` [PATCH 2/5] seccomp: add unit test for seccomp filtering Daniel P. Berrangé
2021-08-02 13:03 ` [PATCH 3/5] seccomp: fix blocking of process spawning Daniel P. Berrangé
2021-08-02 13:03 ` [PATCH 4/5] seccomp: block use of clone3 syscall Daniel P. Berrangé
2021-08-02 13:03 ` [PATCH 5/5] seccomp: block setns, unshare and execveat syscalls Daniel P. Berrangé
2021-08-04  8:05 ` [PATCH 0/5] seccomp: fix hole in blocking forks Eduardo Terrell Ferrari Otubo
2022-01-28 15:42   ` Daniel P. Berrangé
2022-01-31  9:07     ` Eduardo Otubo
2022-01-31  9:09       ` Daniel P. Berrangé

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