AUGUST 4, 2026
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Case File

CVE-2023-53456

MEDIUM · CVSS 5.5 EPSS 0.15%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-10-01 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.5. It affects Linux.

CVE
CVE-2023-53456
Severity
MEDIUM
CVSS
5.5
EPSS
0.15%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: scsi: qla4xxx: Add length check when parsing nlattrs There are three places that qla4xxx parses nlattrs: - qla4xxx_set_chap_entry() - qla4xxx_iface_set_param() - qla4xxx_sysfs_ddb_set_param() and each of them directly converts the nlattr to specific pointer of structure without length checking. This could be dangerous as those attributes are not validated and a malformed nlattr (e.g., length 0) could result in an OOB read that leaks heap dirty data. Add the nla_len check before accessing the nlattr data and return EINVAL if the length check fails.

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