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Ubuntu 26.04 LTS NTFS-3G Important Heap Buffer Overflows Vuln USN-8554-1

ubuntu
Calendar Grey July 16, 2026
Scroller Ubuntu Esm H88
Ensure your Ubuntu system is secure by addressing the critical issues in NTFS-3G with the latest updates.
Several security issues were fixed in NTFS-3G.

Summary

Several security issues were fixed in NTFS-3G.

Software Description:

- ntfs-3g: read/write NTFS driver for FUSE

Details:

It was discovered that NTFS-3G had a heap buffer overflow when reading

certain NTFS images. A local attacker could possibly use this issue to

execute arbitrary code. (CVE-2026-42616)

It was discovered that NTFS-3G had multiple heap buffer overflows when

processing certain NTFS images. A local attacker could possibly use these

issues to execute arbitrary code. (CVE-2026-42617, CVE-2026-42618,

CVE-2026-46569, CVE-2026-46570, CVE-2026-46572, CVE-2026-56135)

It was discovered that NTFS-3G had out-of-bounds reads when processing

certain NTFS images. A local attacker could possibly use these issues to

obtain sensitive information. (CVE-2026-46571, CVE-2026-56136)

Topics%20covered

Topics Covered

security advisory arbitrary code execution Ubuntu important sensitive information heap buffer overflow

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  libntfs-3g89t64                 1:2022.10.3-5ubuntu1.1
  ntfs-3g                         1:2022.10.3-5ubuntu1.1

Ubuntu 24.04 LTS
  libntfs-3g89t64                 1:2022.10.3-1.2ubuntu3.2
  ntfs-3g                         1:2022.10.3-1.2ubuntu3.2

Ubuntu 22.04 LTS
  libntfs-3g89                    1:2021.8.22-3ubuntu1.4
  ntfs-3g                         1:2021.8.22-3ubuntu1.4

In general, a standard system update will make all the necessary
changes.

References

https://ubuntu.com/security/notices/USN-8554-1

CVE-2026-42616, CVE-2026-42617, CVE-2026-42618, CVE-2026-46569,

CVE-2026-46570, CVE-2026-46571, CVE-2026-46572, CVE-2026-56135,

CVE-2026-56136

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8554-1

Topics%20covered

Topics Covered

security advisory arbitrary code execution Ubuntu important sensitive information heap buffer overflow

Package Information

https://launchpad.net/ubuntu/+source/ntfs-3g/1:2022.10.3-5ubuntu1.1
https://launchpad.net/ubuntu/+source/ntfs-3g/1:2022.10.3-1.2ubuntu3.2
https://launchpad.net/ubuntu/+source/ntfs-3g/1:2021.8.22-3ubuntu1.4

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