Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
indygreg/python-zstandard
main @ 7a77a75
13
Fixes
0
CVEs
HIGH
Peak severity
38.5%
Coverage
Highlights
Denial of Service: 8 prior fixes. Scrutinize any change in this area.
c-ext: most-fixed (2 issues). Treat as high-risk during review.
5 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Denial of Service: Frequent memory leaks occur in decompression readers due to unreleased PyBytes references and un-decremented chunks during stream operations or early destruction, presenting a significant heap-exhaustion vector.
Integer Overflow: Multi-frame decompression on systems where size_t is narrower than unsigned long long can bypass sanity checks and lead to undersized buffer allocations if the destination frame size exceeds SIZE_MAX.
Integer Overflow: Lack of size verification against PY_SSIZE_T_MAX on 32-bit architectures during buffer segment operations leads to integer truncation bugs in standard Python C-APIs.