SB20260715102 - Ubuntu update for libheif

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Main Vulnerability Database SB20260715102

SB20260715102 - Ubuntu update for libheif

Published: July 15, 2026

Security Bulletin ID SB20260715102
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2026-47709)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a null pointer dereference in heif_image_handle_get_image_tiling() when processing a malformed uncompressed HEIF image item missing the ispe property. A remote attacker can supply a specially crafted HEIF file to cause a denial of service.

The issue is reachable through the public C API and may trigger an assertion in debug builds.


2) Integer overflow (CVE-ID: CVE-2026-47714)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service and disclose sensitive information.

The vulnerability exists due to integer overflow or wraparound in the inline mask parsing code in libheif/region.cc when parsing a crafted HEIF file. A remote attacker can trick the victim into opening a crafted file to cause a denial of service and disclose sensitive information.

The issue is reachable when applications raise the max_image_size_pixels limit or disable it via LIBHEIF_SECURITY_LIMITS=off.


Remediation

Install update from vendor's website.

References