CVE-2020-35508
kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent
Severity Score
4.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.
Se ha encontrado una posibilidad de fallo de condición de carrera y de inicialización incorrecta del id del proceso en el manejo del id del proceso child/parent del kernel de Linux mientras se filtran los manejadores de señales. Un atacante local es capaz de abusar de este fallo para omitir unas comprobaciones y enviar cualquier señal a un proceso privilegiado.
A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.
*Credits:
N/A
CVSS Scores
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
- 2021-02-25 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
- CWE-665: Improper Initialization
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://security.netapp.com/advisory/ntap-20210513-0006 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1902724 | 2021-07-20 | |
| https://github.com/torvalds/linux/commit/b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948 | 2023-02-12 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2020-35508 | 2021-07-20 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Netapp Search vendor "Netapp" | A700s Firmware Search vendor "Netapp" for product "A700s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | A700s Search vendor "Netapp" for product "A700s" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | Fas8300 Firmware Search vendor "Netapp" for product "Fas8300 Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | Fas8300 Search vendor "Netapp" for product "Fas8300" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | Fas8700 Firmware Search vendor "Netapp" for product "Fas8700 Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | Fas8700 Search vendor "Netapp" for product "Fas8700" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | Aff A400 Firmware Search vendor "Netapp" for product "Aff A400 Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | Aff A400 Search vendor "Netapp" for product "Aff A400" | - | - |
Safe
|
| 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" | H300e Firmware Search vendor "Netapp" for product "H300e Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H300e Search vendor "Netapp" for product "H300e" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | H500e Firmware Search vendor "Netapp" for product "H500e Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H500e Search vendor "Netapp" for product "H500e" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | H700e Firmware Search vendor "Netapp" for product "H700e Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H700e Search vendor "Netapp" for product "H700e" | - | - |
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
|
| Netapp Search vendor "Netapp" | H610c Firmware Search vendor "Netapp" for product "H610c Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H610c Search vendor "Netapp" for product "H610c" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | H610s Firmware Search vendor "Netapp" for product "H610s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H610s Search vendor "Netapp" for product "H610s" | - | - |
Safe
|
| Netapp Search vendor "Netapp" | H615c Firmware Search vendor "Netapp" for product "H615c Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H615c Search vendor "Netapp" for product "H615c" | - | - |
Safe
|
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.12 Search vendor "Linux" for product "Linux Kernel" and version " < 5.12" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.12 Search vendor "Linux" for product "Linux Kernel" and version "5.12" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.12 Search vendor "Linux" for product "Linux Kernel" and version "5.12" | rc1 |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.12 Search vendor "Linux" for product "Linux Kernel" and version "5.12" | rc2 |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.12 Search vendor "Linux" for product "Linux Kernel" and version "5.12" | rc3 |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.12 Search vendor "Linux" for product "Linux Kernel" and version "5.12" | rc4 |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Brocade Fabric Operating System Firmware Search vendor "Netapp" for product "Brocade Fabric Operating System Firmware" | - | - |
Affected
| ||||||