CVE-2021-4204
kernel: improper input validation may lead to privilege escalation
Severity Score
7.1
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.
Se ha encontrado un fallo de acceso a memoria fuera de límites (OOB) en el eBPF del kernel de Linux debido a una comprobación de entrada inapropiada. Este fallo permite a un atacante local con un privilegio especial bloquear el sistema o filtrar información interna.
An update that solves 48 vulnerabilities, contains 26 features and has 202 fixes is now available. The SUSE Linux Enterprise 15 SP4 kernel was updated. The following security bugs were fixed.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2022-01-11 CVE Reserved
- 2022-03-19 First Exploit
- 2022-07-21 CVE Published
- 2024-08-03 CVE Updated
- 2025-06-20 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-20: Improper Input Validation
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
References (6)
| URL | Tag | Source |
|---|---|---|
| https://security-tracker.debian.org/tracker/CVE-2021-4204 | Third Party Advisory | |
| https://security.netapp.com/advisory/ntap-20221228-0003 | Third Party Advisory |
|
| URL | Date | SRC |
|---|---|---|
| https://github.com/tr3ee/CVE-2021-4204 | 2022-03-19 |
| URL | Date | SRC |
|---|---|---|
| https://www.openwall.com/lists/oss-security/2022/01/11/4 | 2023-07-18 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2021-4204 | 2023-07-18 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2039178 | 2023-07-18 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Netapp Search vendor "Netapp" | H300s Firmware Search vendor "Netapp" for product "H300s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H300s Search vendor "Netapp" for product "H300s" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | H500s Firmware Search vendor "Netapp" for product "H500s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H500s Search vendor "Netapp" for product "H500s" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | H700s Firmware Search vendor "Netapp" for product "H700s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H700s Search vendor "Netapp" for product "H700s" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | H410s Firmware Search vendor "Netapp" for product "H410s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H410s Search vendor "Netapp" for product "H410s" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | H410c Firmware Search vendor "Netapp" for product "H410c Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H410c Search vendor "Netapp" for product "H410c" | - | - |
Safe
|
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.8.0 Search vendor "Linux" for product "Linux Kernel" and version " < 5.8.0" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.8.0 Search vendor "Linux" for product "Linux Kernel" and version "5.8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0" | - |
Affected
| ||||||