Memory leak in libheif - #VU147364
Published: September 8, 2026
Vulnerability identifier: #VU147364
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to missing release of memory after effective lifetime in Track::get_next_sample_raw_data() when processing crafted HEIF sequence files with malformed auxiliary metadata. A remote attacker can supply a crafted file to cause a denial of service.
User interaction is required to process a crafted file.
Affected software
libheif
Remediation
Install security update from vendor's website.
libheif - update to 1.23.4