What’s Vulnerable › Vulnerabilities

CVE-2023-38432

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% 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 6.3.10. fs/smb/server/smb2misc.c in ksmbd does not validate the relationship between the command payload size and the RFC1002 length specification, leading to an out-of-bounds read.

Affected products

• Linux kernel: from 5.15 before 5.15.121; from 5.16 before 6.1.36; from 6.2 before 6.3.10 — fixed in 5.15.121, 6.1.36, 6.3.10
• NetApp H300S: all versions
• NetApp H410S: all versions
• NetApp H500S: all versions
• NetApp H700S: all versions
• NetApp Solidfire: all versions
• NetApp Solidfire & Hci Storage Node: all versions

How to fix

Upgrade to a fixed version: Linux kernel 5.15.121, 6.1.36, 6.3.10. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.10
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=2b9b8f3b68edb3d67d79962f02e26dbb5ae3808d
• https://security.netapp.com/advisory/ntap-20230831-0002/
• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.10
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=2b9b8f3b68edb3d67d79962f02e26dbb5ae3808d
• https://security.netapp.com/advisory/ntap-20230831-0002/

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