CVE-2023-53676
scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()
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.
INFO
Published Date :
Oct. 7, 2025, 4:15 p.m.
Last Modified :
Feb. 3, 2026, 6:53 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Apply the provided patch to the Linux kernel.
- Update the Linux kernel to the latest version.
- Recompile the kernel after applying the patch.
- Restart the system to load the new kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-53676.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-53676 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-53676
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-53676 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-53676 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 03, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.295 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.257 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.5.5 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.55 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.133 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.197 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.1 up to (excluding) 4.14.326 Added Reference Type kernel.org: https://git.kernel.org/stable/c/0cac6cbb9908309352a5d30c1876882771d3da50 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/114b44dddea1f8f99576de3c0e6e9059012002fc Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4738bf8b2d3635c2944b81b2a84d97b8c8b0978d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5353df78c22623b42a71d51226d228a8413097e2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/801f287c93ff95582b0a2d2163f12870a2f076d4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/df349e84c2cb0dd05d98c8e1189c26ab4b116083 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 07, 2025
Action Type Old Value New Value 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. Added Reference https://git.kernel.org/stable/c/0cac6cbb9908309352a5d30c1876882771d3da50 Added Reference https://git.kernel.org/stable/c/114b44dddea1f8f99576de3c0e6e9059012002fc Added Reference https://git.kernel.org/stable/c/2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6 Added Reference https://git.kernel.org/stable/c/4738bf8b2d3635c2944b81b2a84d97b8c8b0978d Added Reference https://git.kernel.org/stable/c/5353df78c22623b42a71d51226d228a8413097e2 Added Reference https://git.kernel.org/stable/c/801f287c93ff95582b0a2d2163f12870a2f076d4 Added Reference https://git.kernel.org/stable/c/bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a Added Reference https://git.kernel.org/stable/c/df349e84c2cb0dd05d98c8e1189c26ab4b116083