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Guard lower close_range call with fd > 3 in os_exec_script

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Andrea Mazzoleni 2026-08-06 23:18:12 +02:00
parent 6491de0eaa
commit 2b71f5727e
1 changed files with 4 additions and 3 deletions
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7
os/unix.c
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@ -839,7 +839,8 @@ int os_script(char** argv, char** envp, const char* run_as_user)
*
* For scripts we cannot set fd as CLOEXEC.
*/
close_range(3, fd - 1, CLOSE_RANGE_CLOEXEC);
if (fd > 3)
close_range(3, fd - 1, CLOSE_RANGE_CLOEXEC);
close_range(fd + 1, ~0U, CLOSE_RANGE_CLOEXEC);
#endif
@ -1333,7 +1334,7 @@ int os_wait(pid_t pid, int* status)
} while (ret == -1 && errno == EINTR);
if (ret == -1) {
os_syslog(OS_LVL_INFO, "failed to wait, errno=%s(%d)", strerror(errno), errno);
os_syslog(OS_LVL_INFO, "failed to wait, errno=%s(%d)", strerror(errno), errno);
}
return ret;
@ -1502,7 +1503,7 @@ void os_privileges_acquire(void)
/* If EPERM, process lacks permission to switch privileges (e.g. dropped capabilities); continue with active privileges */
os_syslog(OS_LVL_INFO, "permission denied to acquire privileges, continuing with active privileges");
} else {
os_syslog(OS_LVL_INFO, "failed to acquire privileges, errno=%s(%d)", strerror(errno), errno);
os_syslog(OS_LVL_INFO, "failed to acquire privileges, errno=%s(%d)", strerror(errno), errno);
os_abort();
}
}