Vulnerability identifier: #VU79474
Vulnerability risk: Medium
CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-476
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in ksmbd in Linux kernel when handling SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. A remote attacker can send specially crafted data to the system and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel: All versions
External links
http://access.redhat.com/security/cve/CVE-2023-32248
http://www.zerodayinitiative.com/advisories/ZDI-CAN-20479/
http://bugzilla.redhat.com/show_bug.cgi?id=2219818
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.