In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() The function lio_target_nacl_info_show() uses sprintf() in a loop to print details for every iSCSI connection in a session without checking for the buffer length. With enough iSCSI connections it's possible to overflow the buffer provided by configfs and corrupt the memory. This patch replaces sprintf() with sysfs_emit_at() that checks for buffer boundries.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00045.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

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Vendors Products
Linux
  • Linux Kernel
References
Link Providers
https://git.kernel.org/stable/c/0cac6cbb9908309352a5d30c1876882771d3da50 cve-icon cve-icon
https://git.kernel.org/stable/c/114b44dddea1f8f99576de3c0e6e9059012002fc cve-icon cve-icon
https://git.kernel.org/stable/c/2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6 cve-icon cve-icon
https://git.kernel.org/stable/c/4738bf8b2d3635c2944b81b2a84d97b8c8b0978d cve-icon cve-icon
https://git.kernel.org/stable/c/5353df78c22623b42a71d51226d228a8413097e2 cve-icon cve-icon
https://git.kernel.org/stable/c/801f287c93ff95582b0a2d2163f12870a2f076d4 cve-icon cve-icon
https://git.kernel.org/stable/c/bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a cve-icon cve-icon
https://git.kernel.org/stable/c/df349e84c2cb0dd05d98c8e1189c26ab4b116083 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025100707-CVE-2023-53676-e7fb@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53676 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53676 cve-icon
History

Mon, 05 Jan 2026 10:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Wed, 08 Oct 2025 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Wed, 08 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important

Tue, 07 Oct 2025 15:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() The function lio_target_nacl_info_show() uses sprintf() in a loop to print details for every iSCSI connection in a session without checking for the buffer length. With enough iSCSI connections it's possible to overflow the buffer provided by configfs and corrupt the memory. This patch replaces sprintf() with sysfs_emit_at() that checks for buffer boundries.
Title scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-01-05T10:21:49.841Z

Reserved: 2025-10-07T15:16:59.664Z

Link: CVE-2023-53676

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-07T16:15:51.653

Modified: 2025-10-08T19:38:09.863

Link: CVE-2023-53676

cve-icon Redhat

Severity : Important

Publid Date: 2025-10-07T00:00:00Z

Links: CVE-2023-53676 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-08T13:35:26Z