[Bug other/100968] New: libiberty: stuck in infinite loop in nm-new while demangling rust symbols

[Bug other/100968] New: libiberty: stuck in infinite loop in nm-new while demangling rust symbols

[terrynini38514 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100968

            Bug ID: 100968
           Summary: libiberty: stuck in infinite loop in nm-new while
                    demangling rust symbols
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: terrynini38514 at gmail dot com
  Target Milestone: ---

Created attachment 50964
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50964&action=edit
demangling POC

Sorry for didn't identify the actual version of libiberty, but this bug can be
reproduce by clone the latest version (2.36.50) of binutils-gdb.

The POC cause nm-new stuck in infinite loop at rust-demangle.c:1024 and
rust-demangle.c:747 while using the nm-new with option -C, and there are more
similar case I found, I can attach them if needed. All of these cases just
stuck in a infinite loop in rust-demangle.c.

And I want to apply for CVE, if that requires me to do anything more, like
attach a valid patch or something ? Let me know, please.

Thanks.

[Bug demangler/100968] libiberty: stuck in infinite loop in nm-new while demangling rust symbols

[nickc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100968

Nick Clifton <nickc at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nickc at gcc dot gnu.org

--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Created attachment 51156
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51156&action=edit
Proposed patch

I think that this PR is a duplicate of 99935.  The patch for that PR (attached
here) also fixes this problem.

[Bug demangler/100968] libiberty: stuck in infinite loop in nm-new while demangling rust symbols

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100968

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 99935.

*** This bug has been marked as a duplicate of bug 99935 ***