CVE-2025-39929: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix smbdirect_recv_io leak in smbd_negotiate() error path During tests of another unrelated patch I was able to trigger this error: Objects remaining on __kmem_cache_shutdown()

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.16 — 6.1.154
linux	linux_kernel	6.2 — 6.6.108
linux	linux_kernel	6.7 — 6.12.49
linux	linux_kernel	6.13 — 6.16.9
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/0991418bf98f191d0c320bd25245fcffa1998c7e https://git.kernel.org/stable/c/3d7c075c878ac844e33c43e506c2fa27ac7e9689 https://git.kernel.org/stable/c/922338efaad63cfe30d459dfc59f9d69ff93ded4 https://git.kernel.org/stable/c/daac51c7032036a0ca5f1aa419ad1b0471d1c6e0 https://git.kernel.org/stable/c/e7b7a93879558e77d950f1ff9a6f3daa385b33df

Other References

https://cert-portal.siemens.com/productcert/html/ssa-082556.html

Frequently Asked Questions

What is CVE-2025-39929? +

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix smbdirect_recv_io leak in smbd_negotiate() error path During tests of another unrelated patch I was able to trigger this error: Objects remaining on __kmem_cache_shutdown() It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-39929? +

CVE-2025-39929 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-39929? +

CVE-2025-39929 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-39929? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-39929