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Vulnerability record · CVE-2023-53676 · published 7 October 2025

CVE-2023-53676: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.32% · top 78.1% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
4 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/0cac6cbb9908309352a5d30c1876882771d3da50 Patch
https://git.kernel.org/stable/c/114b44dddea1f8f99576de3c0e6e9059012002fc Patch
https://git.kernel.org/stable/c/2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6 Patch
https://git.kernel.org/stable/c/4738bf8b2d3635c2944b81b2a84d97b8c8b0978d Patch
https://git.kernel.org/stable/c/5353df78c22623b42a71d51226d228a8413097e2 Patch
https://git.kernel.org/stable/c/801f287c93ff95582b0a2d2163f12870a2f076d4 Patch
https://git.kernel.org/stable/c/bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a Patch
https://git.kernel.org/stable/c/df349e84c2cb0dd05d98c8e1189c26ab4b116083 Patch

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Source: NIST National Vulnerability Database (record CVE-2023-53676), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.