CVE-2025-38191

ksmbd: fix null pointer dereference in destroy_previous_session

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in destroy_previous_session If client set ->PreviousSessionId on kerberos session setup stage, NULL pointer dereference error will happen. Since sess->user is not set yet, It can pass the user argument as NULL to destroy_previous_session. sess->user will be set in ksmbd_krb5_authenticate(). So this patch move calling destroy_previous_session() after ksmbd_krb5_authenticate().

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/281afc52e2961cd5dd8326ebc9c5bc40904c0468
https://git.kernel.org/stable/c/0902625a24eea7fdc187faa5d97df244d159dd6e
https://git.kernel.org/stable/c/1193486dffb7432a09f57f5d09049b4d4123538b
https://git.kernel.org/stable/c/076f1adefb9837977af7ed233883842ddc446644
https://git.kernel.org/stable/c/7ac5b66acafcc9292fb935d7e03790f2b8b2dc0e

Frequently Asked Questions

What is the severity of CVE-2025-38191?: CVE-2025-38191 has not yet been assigned a CVSS score.
How to fix CVE-2025-38191?: To fix CVE-2025-38191, 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-2025-38191 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38191 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-2025-38191?: CVE-2025-38191 affects Linux Linux, Linux Linux.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.