What’s Vulnerable › Vulnerabilities

CVE-2023-38428

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-18 · updated 2026-06-17
• Weakness: CWE-125

Description

An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read.

Affected products

• Linux kernel: from 5.15 before 5.15.113; from 5.16 before 6.1.30; from 6.2 before 6.3.4 — fixed in 5.15.113, 6.1.30, 6.3.4
• NetApp H300S: all versions
• NetApp H410S: all versions
• NetApp H500S: all versions
• NetApp H700S: all versions
• NetApp Solidfire & Hci Management Node: all versions
• NetApp Solidfire & Hci Storage Node: all versions

How to fix

Upgrade to a fixed version: Linux kernel 5.15.113, 6.1.30, 6.3.4. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.4
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/ksmbd?id=f0a96d1aafd8964e1f9955c830a3e5cb3c60a90f
• https://security.netapp.com/advisory/ntap-20230831-0001/
• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.4
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/ksmbd?id=f0a96d1aafd8964e1f9955c830a3e5cb3c60a90f
• https://security.netapp.com/advisory/ntap-20230831-0001/

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