https://github.com/torvalds/linux
Revision 8382fcac1b813ad0a4e68a838fc7ae93fa39eda0 authored by Eric W. Biederman on 21 December 2012, 03:26:06 UTC, committed by Eric W. Biederman on 25 December 2012, 06:53:14 UTC
The sequence: unshare(CLONE_NEWPID) clone(CLONE_THREAD|CLONE_SIGHAND|CLONE_VM) Creates a new process in the new pid namespace without setting pid_ns->child_reaper. After forking this results in a NULL pointer dereference. Avoid this and other nonsense scenarios that can show up after creating a new pid namespace with unshare by adding a new check in copy_prodcess. Pointed-out-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Tip revision: 8382fcac1b813ad0a4e68a838fc7ae93fa39eda0 authored by Eric W. Biederman on 21 December 2012, 03:26:06 UTC
pidns: Outlaw thread creation after unshare(CLONE_NEWPID)
pidns: Outlaw thread creation after unshare(CLONE_NEWPID)
Tip revision: 8382fca
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .gitignore | -rw-r--r-- | 1.1 KB |
| .mailmap | -rw-r--r-- | 4.4 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 92.8 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 231.8 KB |
| Makefile | -rw-r--r-- | 46.9 KB |
| README | -rw-r--r-- | 18.3 KB |
| REPORTING-BUGS | -rw-r--r-- | 3.3 KB |
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