Buffer overflow in Harfbuzz Project

CVE-2021-45931

HarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from hb_sparseset_t<hb_bit_set_invertible_t>::set and hb_set_copy).

Vulnerability class: Buffer Overflow

EPSS: 0.018 (76.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-45931?
CVE-2021-45931 is a medium-severity vulnerability in Harfbuzz Project, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2022-01-01.
How severe is CVE-2021-45931?
Medium severity. CVSS v3 base score is 6.5 out of 10.