CVE-2018-16323: Canonical Ubuntu Linux

Medium severity, CVSS 6.5. EPSS: 49.3% chance of exploitation in the next 30 days.

ReadXBMImage in coders/xbm.c in ImageMagick before 7.0.8-9 leaves data uninitialized when processing an XBM file that has a negative pixel value. If the affected code is used as a library loaded into a process that includes sensitive information, that information sometimes can be leaked via the image data.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only; version 19.04 only
• ImageMagick ImageMagick: before 6.9.10-9 (fixed in 6.9.10-9); from 7.0.0-0, before 7.0.8-9 (fixed in 7.0.8-9)

Published 2018-09-01. Last modified 2026-06-17.