CVE-2025-21955

ksmbd: prevent connection release during oplock break notification

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent connection release during oplock break notification ksmbd_work could be freed when after connection release. Increment r_count of ksmbd_conn to indicate that requests are not finished yet and to not release the connection.

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/09aeab68033161cb54f194da93e51a11aee6144b
https://git.kernel.org/stable/c/a4261bbc33fbf99b99c80aa3a2c5097611802980
https://git.kernel.org/stable/c/f17d1c63a76b0fe8e9c78023a86507a3a6d62cfa
https://git.kernel.org/stable/c/3aa660c059240e0c795217182cf7df32909dd917

Frequently Asked Questions

What is the severity of CVE-2025-21955?: CVE-2025-21955 has not yet been assigned a CVSS score.
How to fix CVE-2025-21955?: To fix CVE-2025-21955, 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-2025-21955 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-21955 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-2025-21955?: CVE-2025-21955 affects Linux Linux, Linux Linux.

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