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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.015 (73.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: +0.001
Affected products
- Pixman
- Debian Linux — versions 10.0, 11.0
- Fedoraproject Fedora — versions 35, 36, 37
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.freedesktop.org/pixman/pixman/-/issues/63 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2022/11/05/1 (mailing-list, Mailing List)
- lists.debian.org/debian-lts-announce/2022/11/msg00008.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2022/dsa-5276 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- packetstormsecurity.com/files/170121/pixman-pixman_sample_floor_y-Integer-Overf… (Exploit, Third Party Advisory)
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.