CVE-2021-39256
mediumpriority · track · 31EPSS 0.005 · 39 %ileDEEURUUSEPSS · scored 2026-10-27
A crafted NTFS image can cause a heap-based buffer overflow in ntfs_inode_lookup_by_name in NTFS-3G < 2021.8.22.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.7–7.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (22)
Products and version ranges known to be affected.
advisories (20)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2022-1728Red Enterprise Linux Advanced Virtualization: Mehrere SchwachstellenDeutsch2021-09-30csaf · cert_bundDE
Ein entfernter oder lokaler, authentisierter Angreifer kann mehrere Schwachstellen in Red Enterprise Linux Advanced Virtualization ausnutzen, um einen Denial of Service zu verursachen, Sicherheitsvorkehrungen zu umgehen, beliebigen Code auszuführen und Informationen offenzulegen.
- CVE-2021-332852021-09-07vendor · osvUS
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.
- CVE-2021-332862021-09-07vendor · osvUS
In NTFS-3G versions < 2021.8.22, when a specially crafted unicode string is supplied in an NTFS image a heap buffer overflow can occur and allow for code execution.
- CVE-2021-332872021-09-07vendor · osvUS
In NTFS-3G versions < 2021.8.22, when specially crafted NTFS attributes are read in the function ntfs_attr_pread_i, a heap buffer overflow can occur and allow for writing to arbitrary memory or denial of service of the application.
- CVE-2021-332892021-09-07vendor · osvUS
In NTFS-3G versions < 2021.8.22, when a specially crafted MFT section is supplied in an NTFS image a heap buffer overflow can occur and allow for code execution.
- CVE-2021-352662021-09-07vendor · osvUS
In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode pathname is supplied in an NTFS image a heap buffer overflow can occur resulting in memory disclosure, denial of service and even code execution.
- CVE-2021-352672021-09-07vendor · osvUS
NTFS-3G versions < 2021.8.22, a stack buffer overflow can occur when correcting differences in the MFT and MFTMirror allowing for code execution or escalation of privileges when setuid-root.
- CVE-2021-352682021-09-07vendor · osvUS
In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS inode is loaded in the function ntfs_inode_real_open, a heap buffer overflow can occur allowing for code execution and escalation of privileges.
- CVE-2021-392512021-09-07vendor · osvUS
A crafted NTFS image can cause a NULL pointer dereference in ntfs_extent_inode_open in NTFS-3G < 2021.8.22.
- CVE-2021-392522021-09-07vendor · osvUS
A crafted NTFS image can cause an out-of-bounds read in ntfs_ie_lookup in NTFS-3G < 2021.8.22.
- CVE-2021-392532021-09-07vendor · osvUS
A crafted NTFS image can cause an out-of-bounds read in ntfs_runlists_merge_i in NTFS-3G < 2021.8.22.
- CVE-2021-392542021-09-07vendor · osvUS
A crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in the function ntfs_attr_record_resize, in NTFS-3G < 2021.8.22.
- CVE-2021-392552021-09-07vendor · osvUS
A crafted NTFS image can trigger an out-of-bounds read, caused by an invalid attribute in ntfs_attr_find_in_attrdef, in NTFS-3G < 2021.8.22.
- CVE-2021-392572021-09-07vendor · osvUS
A crafted NTFS image with an unallocated bitmap can lead to a endless recursive function call chain (starting from ntfs_attr_pwrite), causing stack consumption in NTFS-3G < 2021.8.22.
- CVE-2021-392582021-09-07vendor · osvUS
A crafted NTFS image can cause out-of-bounds reads in ntfs_attr_find and ntfs_external_attr_find in NTFS-3G < 2021.8.22.
- CVE-2021-392592021-09-07vendor · osvUS
A crafted NTFS image can trigger an out-of-bounds access, caused by an unsanitized attribute length in ntfs_inode_lookup_by_name, in NTFS-3G < 2021.8.22.
- CVE-2021-392602021-09-07vendor · osvUS
A crafted NTFS image can cause an out-of-bounds access in ntfs_inode_sync_standard_information in NTFS-3G < 2021.8.22.
- CVE-2021-392612021-09-07vendor · osvUS
A crafted NTFS image can cause a heap-based buffer overflow in ntfs_compressed_pwrite in NTFS-3G < 2021.8.22.
- CVE-2021-392622021-09-07vendor · osvUS
A crafted NTFS image can cause an out-of-bounds access in ntfs_decompress in NTFS-3G < 2021.8.22.
- CVE-2021-392632021-09-07vendor · osvUS
A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in ntfs_get_attribute_value, in NTFS-3G < 2021.8.22.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (24)
External citations — patches, advisories, analysis.
- https://github.com/tuxera/ntfs-3g/releasescnnvd
- https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jpcnnvd
- https://lists.debian.org/debian-lts-announce/2021/11/msg00013.htmlcnnvd
- https://packetstormsecurity.com/files/164357/Red-Hat-Security-Advisory-2021-3704-01.htmlcnnvd
- https://packetstormsecurity.com/files/167095/Red-Hat-Security-Advisory-2022-1759-01.htmlcnnvd
- https://packetstormsecurity.com/files/170440/Gentoo-Linux-Security-Advisory-202301-01.htmlcnnvd
- https://security.gentoo.org/glsa/202301-01cnnvd
- https://vigilance.fr/vulnerability/NTFS-3G-multiple-vulnerabilities-36281cnnvd
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