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CVE-2026-49271

libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder PUBLISHED

Description (CNA)

libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue.

Affected (CNA)

Vendor / productVersions
strukturag / libheifaffected < 1.22.1

CWE

CWE-125

References

ADP enrichment

CISA-ADP

No English description supplied.