CVE-2021-46790

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-05-02 · updated 2026-06-17
Weakness: CWE-787

Description

ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.

Affected products

Debian Linux: 10.0, 11.0
Fedoraproject Fedora: 35, 36
Tuxera NTFS-3G: through 2021.8.22

References

http://www.openwall.com/lists/oss-security/2022/05/26/1
https://github.com/tuxera/ntfs-3g/issues/16
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7JPX6OUCQKZX4PN5DQPVDUFZCOOZUX7Z/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECDCISL24TYH4CTDFCUVF24WAKRSYF7F/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAXFYIJWT5SHHRNPOJETM77EIMJ6ZP6I/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEXHDCUSLJD2HSPMAAVZ5AWMPUOG6UI7/
https://www.debian.org/security/2022/dsa-5160
http://www.openwall.com/lists/oss-security/2022/05/26/1
https://github.com/tuxera/ntfs-3g/issues/16
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7JPX6OUCQKZX4PN5DQPVDUFZCOOZUX7Z/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECDCISL24TYH4CTDFCUVF24WAKRSYF7F/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAXFYIJWT5SHHRNPOJETM77EIMJ6ZP6I/

Get alerted when CVE-2021-46790 or the next vulnerability affects your stack