CVE-2026-40706 · cross-distro fix matrix

CVE-2026-40706: 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 pr

Affects 6 Linux releases across 6 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2026-40706 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

ntfs-3g→ fixed in1:2017.3.23AR.3-4+deb11u5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ntfs-3g
```

Debian bookworm

Source: Debian Security Tracker

ntfs-3g→ fixed in1:2022.10.3-1+deb12u3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ntfs-3g
```

Debian trixie

Source: Debian Security Tracker

ntfs-3g→ fixed in1:2022.10.3-5+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ntfs-3g
```

Alpine v3.20

Source: Alpine secdb

ntfs-3g→ fixed in2026.2.25-r0
```
apk update && apk add --upgrade ntfs-3g
```

Alpine v3.21

Source: Alpine secdb

ntfs-3g→ fixed in2026.2.25-r0
```
apk update && apk add --upgrade ntfs-3g
```

Alpine edge

Source: Alpine secdb

ntfs-3g→ fixed in2026.2.25-r0
```
apk update && apk add --upgrade ntfs-3g
```

Are YOU affected by CVE-2026-40706?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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