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CVE-2021-25288

python-pillow: Out-of-bounds read in J2K image reader

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Severity

Moderate

Red Hat Product Security

9.1

CVSS 3.1

Review impact separately from score.

Published · April 1, 2021

Updated · June 28, 2026

Description

There is an out-of-bounds read in J2kDecode in j2ku_gray_i. For J2k images with multiple bands, it’s legal to have different widths for each band, e.g. 1 byte for L, 4 bytes for A.

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

To mitigate this feature on Red Hat Quay keep the invoice generation feature disabled, as it is by default.

CVSS / CWE

CVSS 3.1 · 9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CWE-125 · Out-of-bounds Read