CVE-2023-6204
Mozilla: Out-of-bound memory access in WebGL2 blitFramebuffer
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 21, 2023
Updated · November 22, 2025
Description
The Mozilla Foundation Security Advisory describes this flaw as:
On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element.
Statement
Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-125 · Out-of-bounds Read