| Summary: | konsole_grantpty error message when opening any KDE konsoles | ||
|---|---|---|---|
| Product: | Gentoo Security | Reporter: | Surakshan Mendis <bug.tracker> |
| Component: | Vulnerabilities | Assignee: | Gentoo KDE team <kde> |
| Status: | VERIFIED LATER | ||
| Severity: | normal | CC: | greg_g |
| Priority: | High | ||
| Version: | unspecified | ||
| Hardware: | x86 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Package list: | Runtime testing required: | --- | |
Presumably you don't have devfs installed with the 2.6 kernel? Konsole is trying to open /dev/pts/1 Did you recompile kde after upgrading to 2.6?
Without a working devpts `/dev/ptmx' would not be there, but that
still seems odd...if `openpty()' is used to open the pty pair (default
on linux/vanilla kde until 3.1.2...don't know about 3.1.4 though),
glibc should have taken care of calling `grantpt()' on the slave fd
and `konsole_grantpty' isn't needed (and should not be called).
What are the exact permissions on the pty `konsole_grantpty' is
complaining about?
Do you have a tty group?
What is the output of this test:
===CUT===
/* openpty-test.c
*
* gcc -lutil -o openpty-test openpty-test.c
*/
#include <stdio.h>
#include <pty.h>
int main()
{
int masterfd, slavefd;
char name[256], buf[256];
if(openpty(&masterfd, &slavefd, name, NULL, NULL) < 0) {
perror(NULL); return 1;
}
sprintf(buf, "ls -l %s", name); system(buf);
close(masterfd); close(slavefd);
return 0;
}
===CUT===
I've just had a hard disk failure, need a new drive :( Thus I am not able to give you the output of the test script. devfs is installed in the kernel, I never upgraded to 2.6, rather I started with 2.6 with the install. then I compiled KDE. Googling around shows this problem on FreeBSD not really on linux. Will inform you of results when I reinstall Gentoo Dead old bug left to close... |
KDE version: 3.1.4 Gentoo: Stage 2 install Kernel: 2.6.0test11 KDE started by typing "startx" if I open a Konsole (or a console from a console) I get the following error printed on the "virtual terminal" startx was called from or the konsole from which the new konsole was called from. EG: opening a konsole from a konsole sura@tux sura $ konsole konsole: cannot chown /dev/pts/1. Reason: Operation not permitted konsole_grantpty: determined a strange device name `/dev/ptmx'. konsole: chownpty failed for device /dev/pts/1::/dev/pts/1. : This means the session can be eavesdroped. : Make sure konsole_grantpty is installed in : /usr/kde/3.1/bin/ and setuid root. the new konsole does open... but apparently it can me eavesdroped. sura@tux sura $ ls -l /usr/kde/3.1/bin/konsole_grantpty -rwsr-sr-x 1 root root 6088 Dec 6 16:33 /usr/kde/3.1/bin/konsole_grantpty suid appears to be set as well! EVERYTIME I exit the console, the following is printed... konsole_grantpty: determined a strange device name `/dev/ptmx'. If it matters when compiling the 2.6.0kernel I have enabled Unix98 PTY support and a 256 is set as the max PTYs in use --- not sure if this is important here. Reproducible: Always Steps to Reproduce: 1. Open Konsole 2. Error printed (in calling console ie virtual console or another Konsole) 3. Actual Results: sura@tux sura $ konsole konsole: cannot chown /dev/pts/1. Reason: Operation not permitted konsole_grantpty: determined a strange device name `/dev/ptmx'. konsole: chownpty failed for device /dev/pts/1::/dev/pts/1. : This means the session can be eavesdroped. : Make sure konsole_grantpty is installed in : /usr/kde/3.1/bin/ and setuid root. konsole still opens.. but appears to be a security hazard Expected Results: konsole to open with out errors