Advisory Details

February 23rd, 2024

Linux Kernel ksmbd TCP Connection Race Condition Remote Code Execution Vulnerability

ZDI-24-195
ZDI-CAN-22991

CVE ID CVE-2024-26592
CVSS SCORE 9.0, AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS Linux
AFFECTED PRODUCTS Kernel
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability. However, only systems with ksmbd enabled are vulnerable.

The specific flaw exists within the handling of TCP connection and disconnection. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.

ADDITIONAL DETAILS Linux has issued an update to correct this vulnerability. More details can be found at:
https://github.com/torvalds/linux/commit/38d20c62903d669693a1869aa68c4dd5674e2544
DISCLOSURE TIMELINE
  • 2024-01-11 - Vulnerability reported to vendor
  • 2024-02-23 - Coordinated public release of advisory
CREDIT fffvr
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