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CVE-2023-1192

Date: November 1, 2023

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.

Severity Score

Related Resources (6)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=98bea253aa28ad8be2ce565a9ca21beb4a9419e5
https://access.redhat.com/security/cve/CVE-2023-1192
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d527f51331cace562393a8038d870b3e9916686f
https://nvd.nist.gov/vuln/detail/CVE-2023-1192
https://bugzilla.redhat.com/show_bug.cgi?id=2154178
https://www.mend.io/vulnerability-database/CVE-2023-1192

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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