Integer overflow in Pixman

CVE-2022-44638

In libpixman in Pixman before 0.42.2, there is an out-of-bounds write (aka heap-based buffer overflow) in rasterize_edges_8 due to an integer overflow in pixman_sample_floor_y.

Vulnerability class: Integer Overflow

EPSS: 0.014 (70.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-44638?
CVE-2022-44638 is a high-severity vulnerability in Pixman, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2022-11-03.
How severe is CVE-2022-44638?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-44638 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.