Bug 1616229 - telnet crashes on stack overflow due to infinite recursion
Summary: telnet crashes on stack overflow due to infinite recursion
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: telnet
Version: 32
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Michal Ruprich
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-08-15 10:55 UTC by Kamil Dudka
Modified: 2021-05-25 14:58 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-05-25 14:58:59 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)

Description Kamil Dudka 2018-08-15 10:55:48 UTC
Version-Release number of selected component (if applicable):
telnet-0.17-74.fc29


Steps to Reproduce:
# dnf install telnet telnet-server
# systemctl start telnet.socket
# ssh localhost
# telnet localhost | cat
# yes


Actual results:
segmentation fault


Additional info:
# coredumpctl gdb
(gdb) bt
[...]
#22748 0x00007fb3833cb801 in sigprocmask () from /lib64/libc.so.6
#22749 0x00007fb3834a1d80 in __longjmp_chk () from /lib64/libc.so.6
#22750 0x0000557d5e3a3430 in deadpeer ()
#22751 <signal handler called>
#22752 0x00007fb3833cb801 in sigprocmask () from /lib64/libc.so.6
#22753 0x00007fb3834a1d80 in __longjmp_chk () from /lib64/libc.so.6
#22754 0x0000557d5e3a3430 in deadpeer ()
#22755 <signal handler called>
#22756 0x00007fb3833cb801 in sigprocmask () from /lib64/libc.so.6
#22757 0x00007fb3834a1d80 in __longjmp_chk () from /lib64/libc.so.6
#22758 0x0000557d5e3a3430 in deadpeer ()
#22759 <signal handler called>
#22760 0x00007fb3833cb801 in sigprocmask () from /lib64/libc.so.6
#22761 0x00007fb3834a1d80 in __longjmp_chk () from /lib64/libc.so.6
#22762 0x0000557d5e3a3430 in deadpeer ()
#22763 <signal handler called>
#22764 0x00007fb3833cb801 in sigprocmask () from /lib64/libc.so.6
#22765 0x00007fb3834a1d80 in __longjmp_chk () from /lib64/libc.so.6
#22766 0x0000557d5e3a3430 in deadpeer ()
#22767 <signal handler called>
#22768 0x00007fb3833cb801 in sigprocmask () from /lib64/libc.so.6
#22769 0x00007fb3834a1d80 in __longjmp_chk () from /lib64/libc.so.6
#22770 0x0000557d5e3a3430 in deadpeer ()
#22771 <signal handler called>
#22772 0x00007fb383480ed8 in write () from /lib64/libc.so.6
#22773 0x0000557d5e3a3509 in TerminalWrite ()
#22774 0x0000557d5e3a8398 in ttyflush ()
#22775 0x0000557d5e3a44a3 in process_rings ()
#22776 0x0000557d5e3a7ba2 in Scheduler ()
#22777 0x0000557d5e3a81b7 in telnet ()
#22778 0x0000557d5e3a2ab3 in tn ()
#22779 0x0000557d5e39e9b9 in main ()

Comment 1 Ben Cotton 2019-10-31 20:14:34 UTC
This message is a reminder that Fedora 29 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora 29 on 2019-11-26.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
Fedora 'version' of '29'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 29 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Comment 2 Ben Cotton 2020-04-30 20:46:14 UTC
This message is a reminder that Fedora 30 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora 30 on 2020-05-26.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
Fedora 'version' of '30'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 30 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Comment 3 Ben Cotton 2020-05-26 17:46:21 UTC
Fedora 30 changed to end-of-life (EOL) status on 2020-05-26. Fedora 30 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.

Comment 4 Fedora Program Management 2021-04-29 15:54:31 UTC
This message is a reminder that Fedora 32 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora 32 on 2021-05-25.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
Fedora 'version' of '32'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 32 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Comment 5 Ben Cotton 2021-05-25 14:58:59 UTC
Fedora 32 changed to end-of-life (EOL) status on 2021-05-25. Fedora 32 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.


Note You need to log in before you can comment on or make changes to this bug.