CVE catalog
CVE-2021-33285
ntfs-3g: CVE-2021-33285
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.41% · Oct 25, 2026
In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function ntfs_get_attribute_value, a heap buffer overflow can occur allowing for memory disclosure or denial of service. The vulnerability is caused by an out-of-bound buffer access which can be triggered by mounting a crafted ntfs partition. The root cause is a missing consistency check after reading an MFT record : the "bytes_in_use" field should be less than the "bytes_allocated" field. When it is not, the parsing of the records proceeds into the wild.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ntfs-3g | sid | 1:2026.9.28-2 | fixed |
| Debian | ntfs-3g | forky | 1:2026.9.28-2 | fixed |
| Debian | ntfs-3g | trixie | 1:2022.10.3-5+deb13u2 | fixed |
| Debian | ntfs-3g | trixie-security | 1:2022.10.3-5+deb13u3 | fixed |
| Debian | ntfs-3g | bookworm | 1:2022.10.3-1+deb12u3 | fixed |
| Debian | ntfs-3g | bookworm-security | 1:2022.10.3-1+deb12u3 | fixed |
| Ubuntu | ntfs-3g | pro | 1:2014.2.15AR.3-3 | vulnerable |
| Ubuntu | ntfs-3g | pro | 1:2015.3.14AR.1-1 | vulnerable |
| Ubuntu | ntfs-3g | pro | 1:2015.3.14AR.1-1build1 | vulnerable |
| Ubuntu | ntfs-3g | pro | 1:2015.3.14AR.1-1ubuntu0.1 | vulnerable |
| Ubuntu | ntfs-3g | pro | 1:2015.3.14AR.1-1ubuntu0.2 | vulnerable |
| Ubuntu | ntfs-3g | pro | 1:2015.3.14AR.1-1ubuntu0.3 | vulnerable |
| Ubuntu | ntfs-3g | pro | 1:2015.3.14AR.1-1ubuntu0.3+esm1 | fixed |
| Ubuntu | ntfs-3g | 18.04 | 1:2016.2.22AR.2-2 | vulnerable |
| Ubuntu | ntfs-3g | 18.04 | 1:2017.3.23-2 | vulnerable |
| Ubuntu | ntfs-3g | 18.04 | 1:2017.3.23-2ubuntu0.18.04.1 | vulnerable |
| Ubuntu | ntfs-3g | 18.04 | 1:2017.3.23-2ubuntu0.18.04.2 | vulnerable |
| Ubuntu | ntfs-3g | 18.04 | 1:2017.3.23-2ubuntu0.18.04.3 | fixed |
| Ubuntu | ntfs-3g | 20.04 | 1:2017.3.23AR.3-3ubuntu1 | vulnerable |
| Ubuntu | ntfs-3g | 20.04 | 1:2017.3.23AR.3-3ubuntu1.1 | fixed |
| Ubuntu | ntfs-3g | 22.04 | 1:2017.3.23AR.3-3ubuntu5 | fixed |
| Opensuse | ntfs-3g_ntfsprogs | tumbleweed | 2021.8.22-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ntfs-3g | source | sid | 1:2021.8.22-2 | not yet assigned | Not reported | [988386] |
| Debian | ntfs-3g | source | forky | 1:2021.8.22-2 | not yet assigned | Not reported | [988386] |
| Debian | ntfs-3g | source | trixie | 1:2021.8.22-2 | not yet assigned | Not reported | [988386] |
| Debian | ntfs-3g | source | bookworm | 1:2021.8.22-2 | not yet assigned | Not reported | [988386] |
| Ubuntu | ntfs-3g | deb | pro | 1:2015.3.14AR.1-1ubuntu0.3+esm1 | Not reported | UBUNTU-CVE-2021-33285 | Not reported |
| Ubuntu | ntfs-3g | deb | 18.04 | 1:2017.3.23-2ubuntu0.18.04.3 | Not reported | UBUNTU-CVE-2021-33285 | Not reported |
| Ubuntu | ntfs-3g | deb | 20.04 | 1:2017.3.23AR.3-3ubuntu1.1 | Not reported | UBUNTU-CVE-2021-33285 | Not reported |
| Ubuntu | ntfs-3g | deb | 22.04 | 1:2017.3.23AR.3-3ubuntu5 | Not reported | UBUNTU-CVE-2021-33285 | Not reported |
| Opensuse | ntfs-3g_ntfsprogs | rpm | tumbleweed | 2021.8.22-1.1 | Not reported | OPENSUSE-SU-2024:11101-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libntfs-3g89]Unknown
Source package: [ntfs-3g]
Details (4)
1:2022.10.3-1+deb12u3· amd64 · bookwormFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· arm64 · bookwormFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
- [ntfs-3g]Unknown
Details (4)
1:2022.10.3-1+deb12u3· amd64 · bookwormFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· arm64 · bookwormFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
- [ntfs-3g-dev]Unknown
Source package: [ntfs-3g]
Details (4)
1:2022.10.3-1+deb12u3· amd64 · bookwormFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· arm64 · bookwormFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
1:2022.10.3-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · bookworm; dsa · ntfs-3g · debian · 12
[Debian 13 (Trixie)]
- [libntfs-3g89t64]Unknown
Source package: [ntfs-3g]
Details (5)
1:2022.10.3-5+deb13u1· amd64 · trixieFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u1· arm64 · trixieFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u2· arm64 · trixie-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u3· amd64 · trixie-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
- [ntfs-3g]Unknown
Details (5)
1:2022.10.3-5+deb13u1· amd64 · trixieFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u1· arm64 · trixieFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u2· arm64 · trixie-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u3· amd64 · trixie-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
- [ntfs-3g-dev]Unknown
Source package: [ntfs-3g]
Details (5)
1:2022.10.3-5+deb13u1· amd64 · trixieFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u1· arm64 · trixieFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u2· arm64 · trixie-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
1:2022.10.3-5+deb13u3· amd64 · trixie-securityFixed · Fixed:
1:2021.8.22-2dsa · ntfs-3g · debian · 13
[openSUSE Tumbleweed]
- [libntfs-3g90]Unknown
Source package: [ntfs-3g_ntfsprogs]
Details (1)
2026.7.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
2021.8.22-1.1Version impact unknown
dsa · ntfs-3g_ntfsprogs · opensuse · tumbleweed
- [libntfs-3g-devel]Unknown
Source package: [ntfs-3g_ntfsprogs]
Details (1)
2026.7.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
2021.8.22-1.1Version impact unknown
dsa · ntfs-3g_ntfsprogs · opensuse · tumbleweed
- [ntfs-3g]Unknown
Source package: [ntfs-3g_ntfsprogs]
Details (1)
2026.7.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
2021.8.22-1.1Version impact unknown
dsa · ntfs-3g_ntfsprogs · opensuse · tumbleweed
- [ntfsprogs]Unknown
Source package: [ntfs-3g_ntfsprogs]
Details (1)
2026.7.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
2021.8.22-1.1Version impact unknown
dsa · ntfs-3g_ntfsprogs · opensuse · tumbleweed
- [ntfsprogs-extra]Unknown
Source package: [ntfs-3g_ntfsprogs]
Details (1)
2026.7.7-1.1· x86_64 · tumbleweedUnknown · Fixed:
2021.8.22-1.1Version impact unknown
dsa · ntfs-3g_ntfsprogs · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2021_2965-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-33285]
- [https://osv.dev/vulnerability/DLA-2819-1]
- [https://osv.dev/vulnerability/DSA-4971-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-33285]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:11101-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-33285]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-33285.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-1728.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]