gh-143003: Fix possible shared buffer overflow in bytearray.extend() #143086
+21
−2
Conversation
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
…end() When __length_hint__() returns 0 for non-empty iterator, the data can be written past the shared 0-terminated buffer, corrupting it.
serhiy-storchaka
added
needs backport to 3.13
cmaloney
approved these changes
Dec 27, 2025
|
Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14. |
|
Sorry, @serhiy-storchaka, I could not cleanly backport this to |
|
Sorry, @serhiy-storchaka, I could not cleanly backport this to |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 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Outdated suggestions cannot be applied.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.
When
__length_hint__()returns 0 for non-empty iterator, the data can be written past the shared 0-terminated buffer, corrupting it.bytearray_extendvia misleading__length_hint__#143003