SB2024021603 - Remote code execution in Linux kernel SMB client

Description

This security bulletin contains information about 1 security vulnerability.

1) Integer underflow (CVE-ID: CVE-2024-0565)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer underflow within the receive_encrypted_standard() function in fs/smb/client/smb2ops.c in the SMB Client sub-component in the Linux Kernel. A remote attacker can trick the victim to connect to a malicious SMB server, trigger an integer underflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://access.redhat.com/security/cve/CVE-2024-0565
• https://bugzilla.redhat.com/show_bug.cgi?id=2258518
• https://www.spinics.net/lists/stable-commits/msg328851.html
• https://www.zerodayinitiative.com/advisories/ZDI-24-997/