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VULNERABILITIES

CVE-2023-38431 Details

Description

An issue was discovered in the Linux kernel before 6.3.8. fs/smb/server/connection.c in ksmbd does not validate the relationship between the NetBIOS header's length field and the SMB header sizes, via pdu_size in ksmbd_conn_handler_loop, leading to an out-of-bounds read.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.8 CVERelease Notes
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=368ba06881c395f1c9a7ba22203cf8d78b4addc0 CVEPatch
https://security.netapp.com/advisory/ntap-20230824-0011/ CVEThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.8 [email protected]Release Notes
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=368ba06881c395f1c9a7ba22203cf8d78b4addc0 [email protected]Patch

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-125Out-of-bounds Read[email protected]

Affected Products

ProductVersions

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2023-38431
NVD Published Date:
Jul 18, 2023
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2023-38431 Details - Not Deferred