MEDIUM 6.5 Microsoft
CVE-2026-56135
In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by creating a file in a crafted directory.
Microsoft Security Update 2026-Aug: In NTFS-3G through 2026.2.25, a heap-based buffer overflow exists in the function build_inherited_id() in libntfs-3g/security.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered by creating a file in a crafted directory.
Affected Products
- azl3 ntfs-3g 2022.10.3-4 on Azure Linux 3.0
- azl3 ntfs-3g 2022.10.3-3 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56135
- https://nvd.nist.gov/vuln/detail/CVE-2026-56135
This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-08-11 via Microsoft. Affected: azl3 ntfs-3g 2022.10.3-4 on Azure Linux 3.0, azl3 ntfs-3g 2022.10.3-3 on Azure Linux 3.0.
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