https://github.com/python/cpython/commit/a1f31af280a5c56c9eb85e2de5251c3c1b0e8bd3 commit: a1f31af280a5c56c9eb85e2de5251c3c1b0e8bd3 branch: 3.13 author: Miss Islington (bot) <[email protected]> committer: sobolevn <[email protected]> date: 2026-06-23T14:39:29Z summary:
[3.13] gh-151773: Fix NULL dereference in `PyContextVar_Set` (GH-151836) (#152011) gh-151773: Fix NULL dereference in `PyContextVar_Set` (GH-151836) (cherry picked from commit d35b1719a58c8682a22ef698e070e97661af8d14) Co-authored-by: dev <[email protected]> files: A Misc/NEWS.d/next/Core_and_Builtins/2026-06-21-16-00-00.gh-issue-151773.mN4kRt.rst M Python/context.c diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2026-06-21-16-00-00.gh-issue-151773.mN4kRt.rst b/Misc/NEWS.d/next/Core_and_Builtins/2026-06-21-16-00-00.gh-issue-151773.mN4kRt.rst new file mode 100644 index 000000000000000..b4193c5e15ffef8 --- /dev/null +++ b/Misc/NEWS.d/next/Core_and_Builtins/2026-06-21-16-00-00.gh-issue-151773.mN4kRt.rst @@ -0,0 +1,2 @@ +Fix a crash in :func:`contextvars.ContextVar.set` when memory allocation +fails. diff --git a/Python/context.c b/Python/context.c index bc8b45cf6f1d5b0..5c48ef7a138b125 100644 --- a/Python/context.c +++ b/Python/context.c @@ -278,6 +278,9 @@ PyContextVar_Set(PyObject *ovar, PyObject *val) Py_XINCREF(old_val); PyContextToken *tok = token_new(ctx, var, old_val); Py_XDECREF(old_val); + if (tok == NULL) { + return NULL; + } if (contextvar_set(var, val)) { Py_DECREF(tok); _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
