mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-04-14 17:48:05 -05:00
03e71efcc5
When we linked a new entry on to the global request queue, we forgot to set its next pointer to NULL, so that when it was removed again, s->globreq_head could end up pointing to nonsense. In addition, even if the next pointer happened to be NULL by luck, we also did not notice that s->globreq_head had become NULL and respond by nulling out s->globreq_tail, which would leave s->globreq_tail as a stale pointer to the just-freed list element, causing a memory access error on the next attempt to link something on to the list. This could come up in the situation where you open Change Settings and configure a remote port forwarding, close it (so that the global request is sent, queued, replied to, and unqueued again), and then reopen Change Settings and configure a second one (so that the linked list in the confused state actually gets used).
This is the README for PuTTY, a free Windows and Unix Telnet and SSH
client.
PuTTY is built using CMake <https://cmake.org/>. To compile in the
simplest way (on any of Linux, Windows or Mac), run these commands in
the source directory:
cmake .
cmake --build .
Documentation (in various formats including Windows Help and Unix
`man' pages) is built from the Halibut (`.but') files in the `doc'
subdirectory using `doc/Makefile'. If you aren't using one of our
source snapshots, you'll need to do this yourself. Halibut can be
found at <https://www.chiark.greenend.org.uk/~sgtatham/halibut/>.
The PuTTY home web site is
https://www.chiark.greenend.org.uk/~sgtatham/putty/
If you want to send bug reports or feature requests, please read the
Feedback section of the web site before doing so. Sending one-line
reports saying `it doesn't work' will waste your time as much as
ours.
See the file LICENCE for the licence conditions.