Fix parsing corefile with missing auxv (#2559)

Closes #2543

Author: Arusekk

CHANGELOG.md

@@ -112,15 +112,17 @@ The table below shows which release corresponds to each branch, and what date th
 [2476]: https://github.com/Gallopsled/pwntools/pull/2476
 [2364]: https://github.com/Gallopsled/pwntools/pull/2364
 
-## 4.14.1
+## 4.14.1 (`stable`)
 
 - [#2533][2533] Fix installation on Python 3.5 and lower
 - [#2518][2518] fix: update apport coredump path handling for CorefileFinder
+- [#2559][2559] Fix parsing corefile with missing auxv
 
 [2533]: https://github.com/Gallopsled/pwntools/pull/2533
 [2518]: https://github.com/Gallopsled/pwntools/pull/2518
+[2559]: https://github.com/Gallopsled/pwntools/pull/2559
 
-## 4.14.0 (`stable`)
+## 4.14.0
 
 - [#2356][2356] Add local libc database provider for libcdb
 - [#2360][2360] Add offline parameter for `search_by_hash` series function

pwnlib/elf/corefile.py

@@ -555,6 +555,9 @@ def __init__(self, *a, **kw):
         # Pointer to the entry point
         self.at_entry = 0
 
+        # Pointer to the vdso
+        self.at_sysinfo_ehdr = None
+
         try:
             super(Corefile, self).__init__(*a, **kw)
         except IOError:
@@ -611,6 +614,8 @@ def __init__(self, *a, **kw):
 
             if not self.stack and self.mappings:
                 self.stack = self.mappings[-1].stop
+                if self.mappings[-1].start == 0xffffffffff600000 and len(self.mappings) > 1:
+                    self.stack = self.mappings[-2].stop
 
             if self.stack and self.mappings:
                 for mapping in self.mappings: