CVE-2023-4130

ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea() There are multiple smb2_ea_info buffers in FILE_FULL_EA_INFORMATION request from client. ksmbd find next smb2_ea_info using ->NextEntryOffset of current smb2_ea_info. ksmbd need to validate buffer length Before accessing the next ea. ksmbd should check buffer length using buf_len, not next variable. next is the start offset of current ea that got from previous ea.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/aeb974907642be095e38ecb1a400ca583958b2b0
https://git.kernel.org/stable/c/f339d76a3a972601d0738b881b099d49ebbdc3a2
https://git.kernel.org/stable/c/4bf629262f9118ee91b1c3a518ebf2b3bcb22180
https://git.kernel.org/stable/c/79ed288cef201f1f212dfb934bcaac75572fb8f6

Frequently Asked Questions

What is the severity of CVE-2023-4130?: CVE-2023-4130 has not yet been assigned a CVSS score.
How to fix CVE-2023-4130?: To fix CVE-2023-4130, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4130 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-4130 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4130?: CVE-2023-4130 affects Linux Linux, Linux Linux.

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