High 8.8Published Oct 7, 2025

CVE-2023-53676scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()

Updated under an hour ago (Oct 26, 2026, 8:30 PM ET)

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Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from e48354ce078c079996f89d715dfa44814b4eba01 before df349e84c2cb0dd05d98c8e1189c26ab4b116083; from e48354ce078c079996f89d715dfa44814b4eba01 before 114b44dddea1f8f99576de3c0e6e9059012002fc; from e48354ce078c079996f89d715dfa44814b4eba01 before 2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6; from e48354ce078c079996f89d715dfa44814b4eba01 before bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a; from e48354ce078c079996f89d715dfa44814b4eba01 before 5353df78c22623b42a71d51226d228a8413097e2; from e48354ce078c079996f89d715dfa44814b4eba01 before 4738bf8b2d3635c2944b81b2a84d97b8c8b0978d; from e48354ce078c079996f89d715dfa44814b4eba01 before 0cac6cbb9908309352a5d30c1876882771d3da50; from e48354ce078c079996f89d715dfa44814b4eba01 before 801f287c93ff95582b0a2d2163f12870a2f076d4	CNA record
linux linux_kernel linux:linux_kernel	from 3.1 before 4.14.326; from 4.15 before 4.19.295; from 4.20 before 5.4.257; from 5.5 before 5.10.197; from 5.11 before 5.15.133; from 5.16 before 6.1.55; from 6.2 before 6.5.5	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.