High severity · published Sep 7, 2021
CVE-2021-39251
A crafted NTFS image can cause a NULL pointer dereference in ntfs_extent_inode_open in NTFS-3G < 2021.8.22
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
A crafted NTFS image can cause a NULL pointer dereference in ntfs_extent_inode_open in NTFS-3G < 2021.8.22.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0; 11.0 · source: NVD
EL
Enterprise Linux · Redhat
7.0; 8.0; 8.0 · source: NVD
FE
Fedora · Fedoraproject
33; 35 · source: NVD
NT
Ntfs-3g · Tuxera
before 2021.8.22 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-39251
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-39251
Mailing List
http://www.openwall.com/lists/oss-security/2021/08/30/1
Issue Tracking
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2001649
Release Notes
https://github.com/tuxera/ntfs-3g/releases
Third Party Advisory
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jp
Mailing List
https://lists.debian.org/debian-lts-announce/2021/11/msg00013.html
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