CVE-2026-22693

Katalog CVE

CVSS 5.3 · Medium EPSS 0,45%

Kerentanan NULL Pointer Dereference pada harfbuzz project harfbuzz. Skor CVSS 3.1 5.3 (Medium) menurut github.com.

Deskripsi (NVD)

HarfBuzz is a text shaping engine. Prior to version 12.3.0, a null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh. The function fails to check if hb_malloc returns NULL before using placement new to construct an object at the returned pointer address. When hb_malloc fails to allocate memory (which can occur in low-memory conditions or when using custom allocators that simulate allocation failures), it returns NULL. The code then attempts to call the constructor on this null pointer using placement new syntax, resulting in undefined behavior and a Segmentation Fault. This issue has been patched in version 12.3.0.

Rincian

Terbit di NVD

10 Januari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

5.3 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-476: NULL Pointer Dereference

EPSS (30 hari)

0,45% peluang dieksploitasi; lebih tinggi dari 37,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-xvjr-f2r9-c7ww exploit · mitigasi · advisory vendor
• https://github.com/harfbuzz/harfbuzz/commit/1265ff8d990284f04d8768f35b0e20ae5f60daae patch
• http://www.openwall.com/lists/oss-security/2026/01/11/1 exploit · mailing list · patch · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2026/01/12/1 exploit · mailing list · patch · advisory pihak ketiga