CVE-2023-2236
Use-after-free in Linux kernel's Performance Events subsystem
Severity Score
7.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
2
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Attend
*SSVC
Descriptions
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Both io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability. We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Both io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability. We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.
*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:Attend
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-04-21 CVE Reserved
- 2023-05-01 CVE Published
- 2025-03-05 CVE Updated
- 2025-03-05 First Exploit
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-416: Use After Free
CAPEC
- CAPEC-233: Privilege Escalation
References (3)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://security.netapp.com/advisory/ntap-20230601-0010 | 2023-08-11 |
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" | >= 5.19 < 6.0.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.0.11" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h300s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h300s" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h410c Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h410c" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h410s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h410s" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h500s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h500s" | - |
Affected
| ||||||
| Netapp Search vendor "Netapp" | Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller" | h700s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h700s" | - |
Affected
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