Integer overflow in libheif - #VU131969
Published: May 20, 2026
Vulnerability identifier: #VU131969
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: N/A
CWE-ID: CWE-190
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 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.
Affected software
libheif
Remediation
Install security update from vendor's website.
libheif - update to 1.22.0