Integer overflow in libheif - #VU131969
Published: May 20, 2026
Vulnerability identifier: #VU131969
CSH Severity: Medium
CVSS v4.0: 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
CVE-ID: N/A
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: struktur AG
Affected software:
libheif
libheif
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to integer overflow in compute_tile_data_size_bytes in libheif/codecs/uncompressed/unc_encoder_rgb_bytealign_pixel_interleave.cc when processing crafted image data. A remote attacker can supply values that trigger 32-bit multiplication wraparound in tile size calculations to cause a denial of service.
The wrapped result is used for tile data offset calculation in unc_image.cc.
Remediation
Install security update from vendor's website.