CVE-2023-53456
scsi: qla4xxx: Add length check when parsing nlattrs
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.
INFO
Published Date :
Oct. 1, 2025, 12:15 p.m.
Last Modified :
Oct. 2, 2025, 7:12 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Implement length checks for nlattr parsing.
- Return EINVAL on failed length checks.
- Apply the fix in qla4xxx_set_chap_entry.
- Apply the fix in qla4xxx_iface_set_param.
References to Advisories, Solutions, and Tools
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CVE-2023-53456.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-53456 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-2023-53456
weaknesses.
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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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 01, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/25feffb3fbd51ae81d92c65cebc0e932663828b3 Added Reference https://git.kernel.org/stable/c/47cd3770e31df942e2bb925a9a855c79ed0662eb Added Reference https://git.kernel.org/stable/c/47f3be62eab50b8cd7e1ae5fc2c4dae687497c34 Added Reference https://git.kernel.org/stable/c/4ed21975311247bb84e82298eeb359ec0a0fa84d Added Reference https://git.kernel.org/stable/c/5925e224cc6edfef57b20447f18323208461309b Added Reference https://git.kernel.org/stable/c/6d65079c69dc1feb817ed71f5bd15e83a7d6832d Added Reference https://git.kernel.org/stable/c/b018c0440b871d8b001c996e95fa4538bd292de6 Added Reference https://git.kernel.org/stable/c/cfa6a1a79ed6d336fac7a5d87eb5471e4401829f Added Reference https://git.kernel.org/stable/c/f61fc650c47849637fa1771a31a11674c824138a