CVE-2021-22555
Scores
EPSS
Percentile: 85.2%
CVSS
CVSS Score: 7.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Local (L)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
Low (L)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Local (L)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
Partial
Measures the impact to the confidentiality of information
Integrity Impact
Partial
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Partial
Measures the impact to the availability of the impacted component
Description
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
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Sources
CWEs
Related Vulnerabilities
Exploits
Vulnerable Software (340)
Type: Configuration
Product: kernel
Operating System: rhel 7
{ "fixed": "3.10.0-1160.41.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.2
{ "fixed": "3.10.0-327.100.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.3
{ "fixed": "3.10.0-514.92.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.4
{ "fixed": "3.10.0-693.94.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.6
{ "fixed": "3.10.0-957.84.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.6
{ "fixed": "3.10.0-957.84.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.6
{ "fixed": "3.10.0-957.84.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.7
{ "fixed": "3.10.0-1062.56.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.7
{ "fixed": "3.10.0-1062.56.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 7.7
{ "fixed": "3.10.0-1062.56.1.el7"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 8
{ "fixed": "4.18.0-305.12.1.el8_4"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 8.1
{ "fixed": "4.18.0-147.52.1.el8_1"}
Source: redhat
Type: Configuration
Product: kernel
Operating System: rhel 8.2
{ "fixed": "4.18.0-193.64.1.el8_2"}
Source: redhat
Type: Configuration
Product: kernel-rt
Operating System: rhel
{ "fixed": "3.10.0-1160.41.1.rt56.1181.el7"}
Source: redhat
Type: Configuration
Product: kernel-rt
Operating System: rhel
{ "fixed": "4.18.0-305.12.1.rt7.84.el8_4"}
Source: redhat
Type: Configuration
Product: kernel-rt
Operating System: rhel
{ "fixed": "4.18.0-193.64.1.rt13.115.el8_2"}
Source: redhat
Type: Configuration
Product: linux
Operating System: debian
{ "fixed": "5.10.38-1"}
Source: debian
Type: Configuration
Product: linux
Operating System: astra 1.6.9
{ "unaffected": true}
Source: astra
Type: Configuration
Product: linux
Operating System: astra 1.7.1.8
{ "unaffected": true}
Source: astra
Type: Configuration
Product: linux
Operating System: astra 4.7.1.8
{ "unaffected": true}
Source: astra