[tor-bugs] #29819 [Core Tor/Tor]: Seccomp: sandbox crash on rt_sigaction with libseccomp 0.2.4

Tor Bug Tracker & Wiki blackhole at torproject.org
Sun Mar 24 21:58:51 UTC 2019


#29819: Seccomp: sandbox crash on rt_sigaction with libseccomp 0.2.4
---------------------------------------------+-----------------------------
 Reporter:  toralf                           |          Owner:  nickm
     Type:  defect                           |         Status:  assigned
 Priority:  Medium                           |      Milestone:  Tor:
                                             |  0.4.0.x-final
Component:  Core Tor/Tor                     |        Version:  Tor:
                                             |  unspecified
 Severity:  Normal                           |     Resolution:
 Keywords:  crash, linux, sandbox, 040-must  |  Actual Points:
Parent ID:                                   |         Points:  0.2
 Reviewer:                                   |        Sponsor:
---------------------------------------------+-----------------------------

Comment (by pege):

 `evsignal` in the code above is `1` which would make the signal SIGHUP:

 {{{
 (gdb) print evsignal
 $1 = 1
 }}}

 Looking
 [https://gitweb.torproject.org/tor.git/tree/src/lib/sandbox/sandbox.c?h=tor-0.3.5.8&id=5030edfb534245ed3f7e6b476f38a706247f3cb8#n305
 sandbox.c:305], however, that signal should be allowed.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29819#comment:8>
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