PT-2026-24799 · Struktur Ag+2 · Libheif+2

Niebelungen · CVE-2026-3950 · Publicado 2026-02-23 · Atualizado 2026-06-24

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Baixa

Vetor base

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions strukturag libheif versions up to 1.21.2

Description A flaw exists in strukturag libheif, specifically within the Track::load function located in the libheif/sequences/track.cc file, related to the stsz/stts component. This can lead to an out-of-bounds read condition. The attack requires local access. An exploit for this issue is publicly available.

Recommendations Apply a patch to address this issue. Note that the available patch is currently unofficial and not yet approved.

Exploit

Correção

Out of bounds Read

Buffer Overflow

Enumeração de Fraquezas

CWE-125

CWE-119

Identificadores relacionados

BDU:2026-05076

CVE-2026-3950

ECHO-D166-5C0F-238B

OPENSUSE-SU-2026:10878-1

OPENSUSE-SU-2026:20974-1

SUSE-SU-2026:22153-1

SUSE-SU-2026:2622-1

USN-8454-1

Produtos afetados

Linuxmint

Ubuntu

Libheif

Referências · 79

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3950.json · Exploit
• 🔥 https://github.com/Niebelungen-D/pocs/tree/main/heif_dec_sequence_chunk_idx_oob · Exploit
• https://github.com/strukturag/libheif/pull/1721 · Correção
• https://github.com/strukturag/libheif/issues/1715 · Nota
• https://vuldb.com/?submit.766431 · Nota
• https://suse.com/security/cve/CVE-2026-41069 · Nota
• https://suse.com/security/cve/CVE-2026-3950 · Nota
• https://suse.com/security/cve/CVE-2026-32739 · Nota
• https://suse.com/security/cve/CVE-2026-50142 · Nota
• https://ubuntu.com/security/CVE-2026-32882 · Aviso do Fabricante
• https://bugzilla.suse.com/1267455 · Nota
• https://vuldb.com/?ctiid.350382 · Nota
• https://osv.dev/vulnerability/SUSE-SU-2026:22153-1 · Aviso do Fabricante
• https://bugzilla.suse.com/1265996 · Nota
• https://bugzilla.suse.com/1266282 · Nota