mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2025-02-24 22:58:50 +01:00
Permit kill(pid, 0) in the seccomp2 sandbox.
We don't want to allow general signals to be sent, but there's no problem sending a kill(0) to probe whether a process is there. Fixes bug 24198; bugfix on 0.2.5.1-alpha when the seccomp2 sandbox was introduced.
This commit is contained in:
parent
1b9bb2c847
commit
7461cd3067
2 changed files with 19 additions and 1 deletions
4
changes/bug24198
Normal file
4
changes/bug24198
Normal file
|
@ -0,0 +1,4 @@
|
|||
o Minor bugfixes (controller, linux seccomp2 sandbox):
|
||||
- Avoid a crash when attempting to use the seccomp2 sandbox
|
||||
together with the OwningControllerProcess feature.
|
||||
Fixes bug 24198; bugfix on 0.2.5.1-alpha.
|
|
@ -1050,6 +1050,19 @@ sb_stat64(scmp_filter_ctx ctx, sandbox_cfg_t *filter)
|
|||
}
|
||||
#endif
|
||||
|
||||
static int
|
||||
sb_kill(scmp_filter_ctx ctx, sandbox_cfg_t *filter)
|
||||
{
|
||||
(void) filter;
|
||||
#ifdef __NR_kill
|
||||
/* Allow killing anything with signal 0 -- it isn't really a kill. */
|
||||
return seccomp_rule_add_1(ctx, SCMP_ACT_ALLOW, SCMP_SYS(kill),
|
||||
SCMP_CMP(1, SCMP_CMP_EQ, 0));
|
||||
#else
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
/**
|
||||
* Array of function pointers responsible for filtering different syscalls at
|
||||
* a parameter level.
|
||||
|
@ -1088,7 +1101,8 @@ static sandbox_filter_func_t filter_func[] = {
|
|||
sb_socket,
|
||||
sb_setsockopt,
|
||||
sb_getsockopt,
|
||||
sb_socketpair
|
||||
sb_socketpair,
|
||||
sb_kill
|
||||
};
|
||||
|
||||
const char *
|
||||
|
|
Loading…
Add table
Reference in a new issue