CVE-2026-32738

Katalog CVE

CVSS 6.5 · Medium EPSS 0,38%

Kerentanan Out-of-bounds Read pada struktur libheif. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samples_per_chunk=0 in the stsc box causes an unsigned integer underflow in the Chunk constructor (m_last_sample = 0 + 0 - 1 = UINT32_MAX), mapping all samples to an empty chunk and resulting in a denial of service. When any sample is accessed, the library reads from index 0 of an empty std::vector, causing a guaranteed SEGV (null-page read). The file parses successfully without producing an error; the crash occurs on the first frame access. This issue has been fixed in version 1.22.0.

Rincian

Terbit di NVD

19 Mei 2026

Terakhir diubah

24 Juli 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read
CWE-476: NULL Pointer Dereference

EPSS (30 hari)

0,38% peluang dieksploitasi; lebih tinggi dari 29,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/strukturag/libheif/security/advisories/GHSA-7f2h-cmpf-v9ww exploit · advisory vendor