Description
In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfs_build_permissions_posix() in acls.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 on the READ path (stat, readdir, open) when processing a security descriptor with multiple ACCESS_DENIED ACEs containing WRITE_OWNER from distinct group SIDs.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Tuxera | NTFS-3G | 2022.10.3 – < 2026.2.25 | 2026.2.25 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ntfs-3g | 1:2026.2.25-1 | — |
| Debian 13 | ntfs-3g | 1:2022.10.3-5+deb13u1 | — |
| Debian 12 | ntfs-3g | 1:2022.10.3-1+deb12u3 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | ntfs-3g | 1:2022.10.3-5ubuntu1 | — |
| Ubuntu 25.10 | ntfs-3g | 1:2022.10.3-5ubuntu0.25.10.1 | USN-8192-1 |
| Ubuntu 24.04 LTS | ntfs-3g | 1:2022.10.3-1.2ubuntu3.1 | USN-8192-1 |
| Ubuntu 22.04 LTS | ntfs-3g | 1:2021.8.22-3ubuntu1.3 | USN-8192-1 |
| Ubuntu 20.04 LTS | ntfs-3g | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | ntfs-3g | No fix yet | — |
| Ubuntu Pro 16.04 LTS | ntfs-3g | No fix yet | — |
| Ubuntu Pro 14.04 LTS | ntfs-3g | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | ntfs-3g_ntfsprogs | 2022.5.17-150000.3.24.1 | SUSE-SU-2026:1571-1 |
| SLES 15 SP6 | ntfs-3g_ntfsprogs | 2022.5.17-150000.3.24.1 | SUSE-SU-2026:1571-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | ntfs-3g_ntfsprogs | 2022.5.17-150000.3.24.1 | SUSE-SU-2026:1571-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | ntfs-3g_ntfsprogs | 2022.10.3-6.1 | openSUSE-SU-2026:10614-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ntfs-3g | 2026.2.25-r0 | — |
| Alpine v3.23 | ntfs-3g | 2026.2.25-r0 | — |
| Alpine v3.22 | ntfs-3g | 2026.2.25-r0 | — |
| Alpine v3.21 | ntfs-3g | 2026.2.25-r0 | — |
| Alpine v3.20 | ntfs-3g | 2026.2.25-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | ntfs-3g | 2022.10.3-3 | — |
Advisories 4
- 4TLB000837 IPEC Standalone iSM PHP2Shell and NTFS-3G Vulnerabilities ABB PSIRT · Nov 6, 2026
- USN-8192-1 ntfs-3g vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2026:10614-1 libntfs-3g-devel-2022.10.3-6.1 on GA media SUSE / openSUSE Security Updates · Apr 26, 2026
- SUSE-SU-2026:1571-1 Security update for ntfs-3g_ntfsprogs SUSE / openSUSE Security Updates · Apr 24, 2026