A Buffer Overflow vulnerability exists in NumPy 1.9.x in the PyArray_NewFromDescr_int function of ctors.c when specifying arrays of large dimensions (over 32) from Python code, which could let a malicious user cause a Denial of Service. NOTE: The vendor does not agree this is a vulneraility; In (very limited) circumstances a user may be able provoke the buffer overflow, the user is most likely already privileged to at least provoke denial of service by exhausting memory. Triggering this further requires the use of uncommon API (complicated structured dtypes), which is very unlikely to be available to an unprivileged user

Affected: Ubuntu:20.04:LTS: numpy, Ubuntu:22.04:LTS: numpy

It was discovered that NumPy did not properly manage memory when specifying arrays of large dimensions. If a user were tricked into running malicious Python file, an attacker could cause a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-33430)

It was discovered that NumPy did not properly perform string comparison operations under certain circumstances. An attacker could possibly use this issue to cause NumPy to crash, resulting in a denial of service. (CVE-2021-34141)

It was discovered that NumPy did not properly manage memory under certain circumstances. An attacker could possibly use this issue to cause NumPy to crash, resulting in a denial of service. (CVE-2021-41495, CVE-2021-41496)