NULL Pointer Dereference Affecting harfbuzz-devel package, versions <11.4.5-160000.1.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.45% (38th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES1600-HARFBUZZDEVEL-15910809
  • published6 Apr 2026
  • disclosed20 Mar 2026

Introduced: 20 Mar 2026

CVE-2026-22693  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 harfbuzz-devel to version 11.4.5-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream harfbuzz-devel package and not the harfbuzz-devel package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

HarfBuzz is a text shaping engine. Prior to version 12.3.0, a null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh. The function fails to check if hb_malloc returns NULL before using placement new to construct an object at the returned pointer address. When hb_malloc fails to allocate memory (which can occur in low-memory conditions or when using custom allocators that simulate allocation failures), it returns NULL. The code then attempts to call the constructor on this null pointer using placement new syntax, resulting in undefined behavior and a Segmentation Fault. This issue has been patched in version 12.3.0.

CVSS Base Scores

version 3.1