CVE-2021-20265
kernel: increase slab leak leads to DoS
Severity Score
5.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.
Se encontró un fallo en la manera en que son liberados los recursos de memoria en la función unix_stream_recvmsg en el kernel de Linux cuando había una señal pendiente. Este fallo permite a un usuario local sin privilegios bloquear el sistema agotando la memoria disponible. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema
*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
- 2020-12-17 CVE Reserved
- 2021-03-10 CVE Published
- 2024-08-03 CVE Updated
- 2024-11-07 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-400: Uncontrolled Resource Consumption
- CWE-401: Missing Release of Memory after Effective Lifetime
CAPEC
References (4)
URL | Tag | Source |
---|
URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2021-20265 | 2021-04-20 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | - | - |
Affected
| ||||||
Oracle Search vendor "Oracle" | Tekelec Platform Distribution Search vendor "Oracle" for product "Tekelec Platform Distribution" | >= 7.4.0 <= 7.7.1 Search vendor "Oracle" for product "Tekelec Platform Distribution" and version " >= 7.4.0 <= 7.7.1" | - |
Affected
|