ZDI-22-1691: Linux Kernel ksmbd Out-Of-Bounds Read Information Disclosure Vulnerability
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of SMB2_WRITE commands. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Kernel-devel |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-22-1691?
ZDI-22-1691 is classified as a medium severity vulnerability.
How do I fix ZDI-22-1691?
To fix ZDI-22-1691, apply the latest security patches provided by the Linux Kernel maintainers.
Who is affected by ZDI-22-1691?
ZDI-22-1691 affects installations of the Linux Kernel that are handling SMB2_WRITE commands.
Does ZDI-22-1691 require authentication to exploit?
Yes, ZDI-22-1691 requires authentication to exploit the vulnerability.
What kind of information can be disclosed by ZDI-22-1691?
ZDI-22-1691 allows remote attackers to disclose sensitive information from the affected installations.
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- alias/ZDI-22-1691
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- alias/CVE-2022-47943
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- canonical/red hat kernel-devel