Repository navigation
[3.10] gh-144833: Fix use-after-free in SSL module when SSL_new() fails (GH-144843) - #144862
Merged
Merged
Conversation
pythonGH-144843) In newPySSLSocket(), when SSL_new() returns NULL, Py_DECREF(self) was called before _setSSLError(get_state_ctx(self), ...), causing a use-after-free. Additionally, get_state_ctx() was called with self (PySSLSocket*) instead of sslctx (PySSLContext*), which is a type confusion bug. Fix by calling _setSSLError() before Py_DECREF() and using sslctx instead of self for get_state_ctx(). (cherry picked from commit c91638c) Co-authored-by: Ramin Farajpour Cami <ramin.blackhat@gmail.com>
encukou
approved these changes
Feb 23, 2026
github-project-automation
Bot
moved this from Todo
to Done
in Release and Deferred blockers 🚫
icanhasmath
pushed a commit
to ActiveState/cpython
that referenced
this pull request
Oct 28, 2026
…() fails (pythonGH-144843) (python#144862) pythongh-144833: Fix use-after-free in SSL module when SSL_new() fails (pythonGH-144843) In newPySSLSocket(), when SSL_new() returns NULL, Py_DECREF(self) was called before _setSSLError(get_state_ctx(self), ...), causing a use-after-free. Additionally, get_state_ctx() was called with self (PySSLSocket*) instead of sslctx (PySSLContext*), which is a type confusion bug. Fix by calling _setSSLError() before Py_DECREF() and using sslctx instead of self for get_state_ctx(). (cherry picked from commit c91638c) Co-authored-by: Ramin Farajpour Cami <ramin.blackhat@gmail.com> (cherry picked from commit 4be624a)
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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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 newPySSLSocket(), when SSL_new() returns NULL, Py_DECREF(self)
was called before _setSSLError(get_state_ctx(self), ...), causing
a use-after-free. Additionally, get_state_ctx() was called with
self (PySSLSocket*) instead of sslctx (PySSLContext*), which is
a type confusion bug.
Fix by calling _setSSLError() before Py_DECREF() and using
sslctx instead of self for get_state_ctx().
(cherry picked from commit c91638c)
Co-authored-by: Ramin Farajpour Cami ramin.blackhat@gmail.com
newPySSLSocket()whenSSL_new()fails #144833