CVE-2021-22555

KEV
Published: Lug 07, 2021 Last Modified: Ott 27, 2025
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,3
Source: [email protected]
Attack Vector: adjacent_network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
MEDIUM 4,6
Source: [email protected]
Access Vector: local
Access Complexity: low
Authentication: none
Confidentiality: partial
Integrity: partial
Availability: partial

Description

AI Translation Available

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,8534
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

787

Out-of-bounds Write

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Other
Potential Impacts:
Modify Memory Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Unexpected State
Applicable Platforms
Languages: Assembly, C, C++, Memory-Unsafe
Technologies: ICS/OT
Likelihood of Exploit: High
View CWE Details
Exploit

Linux Kernel 2.6.19 < 5.9 - 'Netfilter Local …

Verified

Linux Kernel 2.6.19 < 5.9 - 'Netfilter Local Privilege Escalation

Author: TheFloW Published: Status: Verified
View Exploit Code →
Operating System

Aff A250 Firmware by Netapp

Product Information
Vendor Netapp
Product Aff A250 Firmware
Version -
cpe:2.3:o:netapp:aff_a250_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

H410C Firmware by Netapp

Product Information
Vendor Netapp
Product H410C Firmware
Version -
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 2.6.19 (inclusive)
To 4.4.267 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fabric Operating System by Brocade

Product Information
Vendor Brocade
Product Fabric Operating System
Version -
cpe:2.3:o:brocade:fabric_operating_system:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 4.15 (inclusive)
To 4.19.188 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

H700S Firmware by Netapp

Product Information
Vendor Netapp
Product H700S Firmware
Version -
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Aff A400 Firmware by Netapp

Product Information
Vendor Netapp
Product Aff A400 Firmware
Version -
cpe:2.3:o:netapp:aff_a400_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Aff 500F Firmware by Netapp

Product Information
Vendor Netapp
Product Aff 500F Firmware
Version -
cpe:2.3:o:netapp:aff_500f_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

H615C Firmware by Netapp

Product Information
Vendor Netapp
Product H615C Firmware
Version -
cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Cloud Backup by Netapp

Product Information
Vendor Netapp
Product Cloud Backup
Version -
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 5.11 (inclusive)
To 5.12 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

H300S Firmware by Netapp

Product Information
Vendor Netapp
Product H300S Firmware
Version -
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

H500S Firmware by Netapp

Product Information
Vendor Netapp
Product H500S Firmware
Version -
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

H610C Firmware by Netapp

Product Information
Vendor Netapp
Product H610C Firmware
Version -
cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 4.5 (inclusive)
To 4.9.267 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

C400 Firmware by Netapp

Product Information
Vendor Netapp
Product C400 Firmware
Version -
cpe:2.3:o:netapp:c400_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Hci Management Node by Netapp

Product Information
Vendor Netapp
Product Hci Management Node
Version -
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Solidfire by Netapp

Product Information
Vendor Netapp
Product Solidfire
Version -
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 4.20 (inclusive)
To 5.4.113 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 4.10 (inclusive)
To 4.14.231 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

H410S Firmware by Netapp

Product Information
Vendor Netapp
Product H410S Firmware
Version -
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fas 8300 Firmware by Netapp

Product Information
Vendor Netapp
Product Fas 8300 Firmware
Version -
cpe:2.3:o:netapp:fas_8300_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Solidfire Baseboard Management Controller by Netapp

Product Information
Vendor Netapp
Product Solidfire Baseboard Management Controller
cpe:2.3:a:netapp:solidfire_baseboard_management_controller:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Linux Kernel by Linux

Product Information
Vendor Linux
Product Linux Kernel
Version Range Affected
From 5.5 (inclusive)
To 5.10.31 (exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fas 8700 Firmware by Netapp

Product Information
Vendor Netapp
Product Fas 8700 Firmware
Version -
cpe:2.3:o:netapp:fas_8700_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

C250 Firmware by Netapp

Product Information
Vendor Netapp
Product C250 Firmware
Version -
cpe:2.3:o:netapp:c250_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

H610S Firmware by Netapp

Product Information
Vendor Netapp
Product H610S Firmware
Version -
cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
http://packetstormsecurity.com/files/163528/Linux-Kernel-Ne…
http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-…
http://packetstormsecurity.com/files/163878/Kernel-Live-Pat…
http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-L…
http://packetstormsecurity.com/files/164155/Kernel-Live-Pat…
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-L…
http://packetstormsecurity.com/files/164437/Netfilter-x_tab…
http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Boun…
http://packetstormsecurity.com/files/165477/Kernel-Live-Pat…
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-L…
https://github.com/google/security-research/security/adviso…
https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-…
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/li…
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/n…
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/li…
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/n…
https://security.netapp.com/advisory/ntap-20210805-0010/
https://security.netapp.com/advisory/ntap-20210805-0010/
http://packetstormsecurity.com/files/163528/Linux-Kernel-Ne…
http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-…
http://packetstormsecurity.com/files/163878/Kernel-Live-Pat…
http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-L…
http://packetstormsecurity.com/files/164155/Kernel-Live-Pat…
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-L…
http://packetstormsecurity.com/files/164437/Netfilter-x_tab…
http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Boun…
http://packetstormsecurity.com/files/165477/Kernel-Live-Pat…
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-L…
https://github.com/google/security-research/security/adviso…
https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-…
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/li…
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/n…
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/li…
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/n…
https://security.netapp.com/advisory/ntap-20210805-0010/
https://security.netapp.com/advisory/ntap-20210805-0010/