A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.
CVE Status: Modified
Attribute | Value |
---|---|
Attack Complexity | LOW |
Attack Vector | NETWORK |
Availability Impact | HIGH |
Base Score | 6.5 |
Base Severity | MEDIUM |
Confidentiality Impact | NONE |
Integrity Impact | NONE |
Privileges Required | LOW |
Scope | UNCHANGED |
User Interaction | NONE |
Vector String | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Exploitability Score | 2.8 |
Impact Score | 3.6 |
Source | [email protected] |
Type | Secondary |