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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0001.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < cfa6a1a79ed6d336fac7a5d87eb5471e4401829f
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < 5925e224cc6edfef57b20447f18323208461309b
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < 47f3be62eab50b8cd7e1ae5fc2c4dae687497c34
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < 6d65079c69dc1feb817ed71f5bd15e83a7d6832d
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < f61fc650c47849637fa1771a31a11674c824138a
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < 25feffb3fbd51ae81d92c65cebc0e932663828b3
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < 4ed21975311247bb84e82298eeb359ec0a0fa84d
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < b018c0440b871d8b001c996e95fa4538bd292de6
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 affected < 47cd3770e31df942e2bb925a9a855c79ed0662eb
Linux Linux affected
Version Status Constraints
3.2 affected —
0 unaffected < 3.2
4.14.326 unaffected ≤ 4.14.*
4.19.295 unaffected ≤ 4.19.*
5.4.257 unaffected ≤ 5.4.*
5.10.195 unaffected ≤ 5.10.*
5.15.132 unaffected ≤ 5.15.*
6.1.53 unaffected ≤ 6.1.*
6.4.16 unaffected ≤ 6.4.*
6.5.3 unaffected ≤ 6.5.*
6.6 unaffected ≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/25feffb3fbd51ae81d92c65cebc0e932663828b3 cve-icon cve-icon
https://git.kernel.org/stable/c/47cd3770e31df942e2bb925a9a855c79ed0662eb cve-icon cve-icon
https://git.kernel.org/stable/c/47f3be62eab50b8cd7e1ae5fc2c4dae687497c34 cve-icon cve-icon
https://git.kernel.org/stable/c/4ed21975311247bb84e82298eeb359ec0a0fa84d cve-icon cve-icon
https://git.kernel.org/stable/c/5925e224cc6edfef57b20447f18323208461309b cve-icon cve-icon
https://git.kernel.org/stable/c/6d65079c69dc1feb817ed71f5bd15e83a7d6832d cve-icon cve-icon
https://git.kernel.org/stable/c/b018c0440b871d8b001c996e95fa4538bd292de6 cve-icon cve-icon
https://git.kernel.org/stable/c/cfa6a1a79ed6d336fac7a5d87eb5471e4401829f cve-icon cve-icon
https://git.kernel.org/stable/c/f61fc650c47849637fa1771a31a11674c824138a cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025100105-CVE-2023-53456-b77a@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53456 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53456 cve-icon
History

Fri, 16 Jan 2026 21:15:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Thu, 02 Oct 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Thu, 02 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Wed, 01 Oct 2025 12:00:00 +0000

Type Values Removed Values 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.
Title scsi: qla4xxx: Add length check when parsing nlattrs
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-10-01T11:42:27.821Z

Reserved: 2025-09-17T14:54:09.754Z

Link: CVE-2023-53456

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2025-10-01T12:15:45.983

Modified: 2026-01-16T21:09:17.963

Link: CVE-2023-53456

cve-icon Redhat

Severity : Low

Publid Date: 2025-10-01T00:00:00Z

Links: CVE-2023-53456 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-02T08:39:39Z

Weaknesses