CVE-2021-3640
kernel: use-after-free vulnerability in function sco_sock_sendmsg()
Severity Score
7.0
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.
Se encontró un fallo de uso de memoria previamente liberada en la función sco_sock_sendmsg() del subsistema HCI del kernel de Linux en la forma en que el usuario llama a ioct UFFDIO_REGISTER o de otra manera desencadena una condición de carrera de la llamada sco_conn_del() junto con la llamada sco_sock_sendmsg() con la página de memoria de fallo controlable esperada. Un usuario local privilegiado podría usar este fallo para bloquear el sistema o escalar sus privilegios en el 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
- 2021-07-09 CVE Reserved
- 2022-02-03 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-03 CVE Updated
- 2024-08-03 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
- CWE-416: Use After Free
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html | Mailing List |
|
| https://security.netapp.com/advisory/ntap-20220419-0003 | Third Party Advisory |
|
| URL | Date | SRC |
|---|---|---|
| https://www.openwall.com/lists/oss-security/2021/07/22/1 | 2024-08-03 |
| URL | Date | SRC |
|---|---|---|
| https://www.debian.org/security/2022/dsa-5096 | 2023-11-07 | |
| https://access.redhat.com/security/cve/CVE-2021-3640 | 2024-02-07 |
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" | 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" | H500s Firmware Search vendor "Netapp" for product "H500s Firmware" | - | - |
Affected
| in | Netapp Search vendor "Netapp" | H500s Search vendor "Netapp" for product "H500s" | - | - |
Safe
|
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 4.4.293 Search vendor "Linux" for product "Linux Kernel" and version " < 4.4.293" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.5 < 4.9.291 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.291" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.10 < 4.14.256 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.14.256" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.15 < 4.19.218 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.218" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.20 < 5.4.160 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.160" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5.0 < 5.10.80 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5.0 < 5.10.80" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.11 < 5.14.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.14.19" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 5.15.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.15.3" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | esm |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | esm |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 21.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "21.10" | - |
Affected
| ||||||