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Vulnerabilities

Vulnerability · CVE-2025-38437

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potential use-after-free in oplock/lease break ack If ksmbd_iov_pin_rsp return error, use-after-free

Published Jul 25, 2025 · catalog updated Aug 5, 2026 · Linux Linux

Check this week

CVE-2025-38437 is not in CISA KEV. FIRST estimates a 41.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
41.00%
Remediation
Version ranges on file
Affected products
vendor Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf <8106adc21a2270c16abf69cd74ccd7c79c6e7acd

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potential use-after-free in oplock/lease break ack If ksmbd_iov_pin_rsp return error, use-after-free can happen by accessing opinfo->state and opinfo_put and ksmbd_fd_put could called twice.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf <8106adc21a2270c16abf69cd74ccd7c79c6e7acd0626e6641f6b467447c81dd7678a69c66f7746cf <8106adc21a2270c16abf69cd74ccd7c79c6e7acd

How to fix CVE-2025-38437

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-38437 is not in CISA KEV. FIRST estimates a 41.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Which versions are affected?

Compare what you have installed with Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf <8106adc21a2270c16abf69cd74ccd7c79c6e7acd 0626e6641f6b467447c81dd7678a69c66f7746cf <8106adc21a2270c16abf69cd74ccd7c79c6e7acd. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 41.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 25, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potential use-after-free in oplock/lease break ack If ksmbd_iov_pin_rsp return error, use-after-free can happen by accessing opinfo->state and opinfo_put and ksmbd_fd_put could called twice.

  2. Aug 5, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potential use-after-free in oplock/lease break ack If ksmbd_iov_pin_rsp return error, use-after-free can happen by accessing opinfo->state and opinfo_put and ksmbd_fd_put could called twice.

Sources

  • CVE.orgVulnerability recordCVE-2025-38437

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-22704

    In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potential use-after-free in oplock/lease break ack If ksmbd_iov_pin_rsp return error, use-after-free can happen by accessing opinfo->state and opinfo_put and ksmbd_fd_put could called twice.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Aug 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.