https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 27 Oct 2026 20:26:32 +0000 https://cve.radiocsirt.org/vuln/rustsec-2026-0176 <p><strong>Affected:</strong> crates.io: pyo3</p> <p>PyO3 0.24.0 added optimized implementations of `Iterator::nth` and `DoubleEndedIterator::nth_back` for the `BoundListIterator` and `BoundTupleIterator` types. These implementations computed the target index using unchecked `usize` addition (`index + n`) before bounds-checking against the sequence length, then read the element via `get_item_unchecked`.</p> <p>In `nth` methods, a sufficiently large `n` (combined with a non-zero internal index) could cause the addition to overflow and wrap around, producing a small &#34;target index&#34; that passed the bounds check and enabling reads at the front of the `list` or `tuple` of elements previously yielded by the iterator.</p> <p>In `nth_back` methods, a sufficiently large `n` could cause underflow in a similar fashion, however would instead allow reads of arbitrary memory past the end of the `list` or `tuple` storage.</p> <p>PyO3 0.29.0 has corrected these methods to use checked arithmetic at the positions which could be at risk of overflow.</p> <p><strong>Affected:</strong> crates.io: pyo3</p> <p>PyO3 0.24.0 added optimized implementations of `Iterator::nth` and `DoubleEndedIterator::nth_back` for the `BoundListIterator` and `BoundTupleIterator` types. These implementations computed the target index using unchecked `usize` addition (`index + n`) before bounds-checking against the sequence length, then read the element via `get_item_unchecked`.</p> <p>In `nth` methods, a sufficiently large `n` (combined with a non-zero internal index) could cause the addition to overflow and wrap around, producing a small &#34;target index&#34; that passed the bounds check and enabling reads at the front of the `list` or `tuple` of elements previously yielded by the iterator.</p> <p>In `nth_back` methods, a sufficiently large `n` could cause underflow in a similar fashion, however would instead allow reads of arbitrary memory past the end of the `list` or `tuple` storage.</p> <p>PyO3 0.29.0 has corrected these methods to use checked arithmetic at the positions which could be at risk of overflow.</p> https://cve.radiocsirt.org/vuln/rustsec-2026-0176