Fix memory leaks when sk_X509_new_null() fails#20957
Closed
ndossche wants to merge 1 commit intophp:PHP-8.4from
Closed
Fix memory leaks when sk_X509_new_null() fails#20957ndossche wants to merge 1 commit intophp:PHP-8.4from
ndossche wants to merge 1 commit intophp:PHP-8.4from
Conversation
In a lot of places the return value is not checked, and when the function fails the code continues execution. However, this means that operations on the stack fail and will cause memory leaks on the objects that weren't pushed. We also notice an inconsistency in how these failures are handled. For example, in one place we explicitly have a fatal error `php_error_docref(NULL, E_ERROR, "Memory allocation failure");` but this is the only place to do so.
devnexen
reviewed
Jan 17, 2026
bukka
approved these changes
Jan 17, 2026
Member
|
I guess you can just get rid of that warning. In reality it won't likely get printed / visible anyway if there is no memory left... |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
4 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
In a lot of places the return value is not checked, and when the function fails the code continues execution. However, this means that operations on the stack fail and will cause memory leaks on the objects that weren't pushed.
We also notice an inconsistency in how these failures are handled. For example, in one place we explicitly have a fatal error
php_error_docref(NULL, E_ERROR, "Memory allocation failure");but this is the only place to do so.This was found by a hybrid static-dynamic analyser that looks for inconsistent handling of error checks in bindings.