Review reviewHigh

CVE-2025-38437

Linux Linux, linux kernel, debian linux

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.

CVSS
7.8
EPSS
0.36%
29.1% percentile
CISA KEV
Not listed
Published
2025.07.26
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.36%
Technical severityCVSS 7.8

Vulnerability overview

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.

Affected product and versions

Product
Linux Linux, linux kernel, debian linux
Affected versions
>= 0626e6641f6b467447c81dd7678a69c66f7746cf < e38ec88a2b42c494601b1213816d75f0b54d9bf0, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 97c355989928a5f60b228ef5266c1be67a46cdf9, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 815f1161d6dbc4c54ccf94b7d3fdeab34b4d7477, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 8106adc21a2270c16abf69cd74ccd7c79c6e7acd, >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 50f930db22365738d9387c974416f38a06e8057e, >= 5.15, >= 5.15 < 6.1.146, >= 6.2 < 6.6.99, >= 6.7 < 6.12.39, >= 6.13 < 6.15.7, 6.16, 11.0
Fixed versions
6.1.146, 6.6.99, 6.12.39, 6.15.7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel, debian linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2025-38437 — Linux Linux, linux kernel, debian linux | SECUFOCUS NOW