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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

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.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
e48354ce078c079996f89d715dfa44814b4eba01 affected < df349e84c2cb0dd05d98c8e1189c26ab4b116083
e48354ce078c079996f89d715dfa44814b4eba01 affected < 114b44dddea1f8f99576de3c0e6e9059012002fc
e48354ce078c079996f89d715dfa44814b4eba01 affected < 2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6
e48354ce078c079996f89d715dfa44814b4eba01 affected < bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a
e48354ce078c079996f89d715dfa44814b4eba01 affected < 5353df78c22623b42a71d51226d228a8413097e2
e48354ce078c079996f89d715dfa44814b4eba01 affected < 4738bf8b2d3635c2944b81b2a84d97b8c8b0978d
e48354ce078c079996f89d715dfa44814b4eba01 affected < 0cac6cbb9908309352a5d30c1876882771d3da50
e48354ce078c079996f89d715dfa44814b4eba01 affected < 801f287c93ff95582b0a2d2163f12870a2f076d4
Linux Linux affected
Version Status Constraints
3.1 affected —
0 unaffected < 3.1
4.14.326 unaffected ≤ 4.14.*
4.19.295 unaffected ≤ 4.19.*
5.4.257 unaffected ≤ 5.4.*
5.10.197 unaffected ≤ 5.10.*
5.15.133 unaffected ≤ 5.15.*
6.1.55 unaffected ≤ 6.1.*
6.5.5 unaffected ≤ 6.5.*
6.6 unaffected ≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Tue, 03 Feb 2026 19:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
Metrics 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'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

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

Projects

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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 : Analyzed

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

Modified: 2026-02-03T18:53:00.520

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

Weaknesses