This a partial backport of 8754b19. It
a) fixes the class/function/constant import table confusion in the
namespaced case, and
b) restricts conflict checks to a single file based on a filename
pointer comparison.
It does not fix the issues with filename reuse (e.g. due to eval)
and late-bound classes. This part of the change requires globals
changes.
In particular, allow arrays with refcount>1, like we already allow
for all other types. _zval_dtor_func is now the same as
_zval_dtor_func_for_ptr with an extra refcount decrement check at
the start. At this point we might as well drop it...
Cherry-pick of ded69ee6e6 from
PHP-7.1.
The PHP core and extensions are written with the assumption that memory
allocation either succeeds, or the allocator bails out (i.e. the allocator
is infallible). Therefore the result of emalloc() and friends are not checked
for NULL values.
However, with USE_ZEND_ALLOC=0, malloc() and friends are used as allocators,
but these are fallible, i.e. they return NULL instead of bailing out if they
fail. This easily leads to invalid memory accesses in the following, such as
in <https://bugs.php.net/73032>. Some of these cases may constitute
exploitable vulnerabilities.
Therefore we make the infallible __zend_alloc() and friends the default for
USE_ZEND_ALLOC=0.
`command_length` is retrieved via strlen() and later passed to emalloc()
and memcpy(), so the appropriate type is `size_t`.
We don't add a regression test, because that would need to allocate a string
of at least 2 GiB.
* PHP-7.0: (34 commits)
Fix URL rewriter partially
Support "git worktree"
Add NEWS
Fix ASSERT logic
Bugfix 72791: fix memory leak in PDO persistent connections
Don't copy mime types in CLI server
Remove obsolete Id tags
Bump version in OCI8 test
Fixed bug #72788 (Invalid memory access when using persistent PDO connection)
Remove typo'd commit
Fix bug 72788: Invalid memory access when database_object_handle is undefined. Also fix memory leak in dbh_free when using persistent PDO connections.
Replace dead branch with ZEND_ASSERT()
Add test for bug #69107: finfo no longer detects PHP files
Fix bug #55451
Fix stream_socket_enable_crypto() test
Remove old $Id$ tags
Sync with 7.1 branch changes from Nikita & Dimitri to keep OCI8 code identical
Fix bug #72524 (Binding null values triggers ORA-24816 error)
Fix the fix (Nikita), thanks!
Check the return value of dbconvert() in mssql_guid_string(), as it may return -1 in case the conversion failed. In that case false is returned.
...
Conflicts:
ext/standard/ftp_fopen_wrapper.c
This should be safe change, as we don't dereference value and member
after calling setter/getter.
And compare to adding unref codes, this is much cheaper.
Under the special circumstance where a garbage collected objects bucket slot was not reused until the end of the script, we get access into freed memory...
No test added as it usually is valgrind-only, and only sometimes when the memory happens to have changed (i.e. (GC_FLAGS(obj) & IS_OBJ_FREE_CALLED) == 0), it actually *may* segfault
* PHP-5.5:
fix#72519, possible OOB using imagegif
fix#72512, invalid read or write for palette image when invalid transparent index is used
Apparently some envs miss SIZE_MAX
Fix tests
Fix bug #72618: NULL Pointer Dereference in exif_process_user_comment
Partial fix for bug #72613 - do not treat negative returns from bz2 as size_t
Fix bug #72606: heap-buffer-overflow (write) simplestring_addn simplestring.c
Fix for bug #72558, Integer overflow error within _gdContributionsAlloc()
Fix bug #72603: Out of bound read in exif_process_IFD_in_MAKERNOTE
Fix bug #72562 - destroy var_hash properly
Fix bug #72533 (locale_accept_from_http out-of-bounds access)
Fix fir bug #72520
Fix for bug #72513
CS fix and comments with bug ID
Fix for HTTP_PROXY issue.
add tests for bug #72512
Fixed bug #72512 gdImageTrueColorToPaletteBody allows arbitrary write/read access
Fixed bug #72479 - same as #72434
Conflicts:
ext/bz2/bz2.c
main/SAPI.c
main/php_variables.c
Nikita Popov