Linux Kernel up to 6.4.4 scsi cur_dsd null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 6.4.4. This impacts the function cur_dsd of the component scsi. Such manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2023-53451. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.4.4 and classified as critical. Affected by this issue is the function cur_dsd of the component scsi. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix potential NULL pointer dereference Klocwork tool reported 'cur_dsd' may be dereferenced. Add fix to validate pointer before dereferencing the pointer.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2023-53451 since 09/17/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 302727 (EulerOS 2.0 SP11 : kernel (EulerOS-SA-2026-1582)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.40 or 6.4.5 eliminates this vulnerability. Applying the patch ee4c9a93238b9ce3703942500cb1aeacf77090d2/4f90a8b0481615622bd0558aa8cf361bea872045/2bea9c1c983152c5411f5a2f1113cb790ce1389d/5a52a2e14fe866541bbc0033058e44bf0bf0c580/ce2cdbe530b0066bae1f98dbab590a232d507eaa/af7affc0f6b82a5bde430fc4f0dcf70963442fbc/464ea494a40c6e3e0e8f91dd325408aaf21515ba is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (302727), EUVD (EUVD-2025-32794) and CERT Bund (WID-SEC-2025-2187). Once again VulDB remains the best source for vulnerability data.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source Linux Kernel
  • Dell Secure Connect Gateway

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 302727
Nessus Name: EulerOS 2.0 SP11 : kernel (EulerOS-SA-2026-1582)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.322/4.19.291/5.4.251/5.10.188/5.15.121/6.1.40/6.4.5
Patch: ee4c9a93238b9ce3703942500cb1aeacf77090d2/4f90a8b0481615622bd0558aa8cf361bea872045/2bea9c1c983152c5411f5a2f1113cb790ce1389d/5a52a2e14fe866541bbc0033058e44bf0bf0c580/ce2cdbe530b0066bae1f98dbab590a232d507eaa/af7affc0f6b82a5bde430fc4f0dcf70963442fbc/464ea494a40c6e3e0e8f91dd325408aaf21515ba

Timelineinfo

09/17/2025 CVE reserved
10/01/2025 +14 days Advisory disclosed
10/01/2025 +0 days VulDB entry created
03/17/2026 +167 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53451 (🔒)
GCVE (CVE): GCVE-0-2023-53451
GCVE (VulDB): GCVE-100-326588
EUVD: 🔒
CERT Bund: WID-SEC-2025-2187 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 10/01/2025 15:01
Updated: 03/17/2026 17:33
Changes: 10/01/2025 15:01 (59), 11/24/2025 03:51 (7), 01/17/2026 01:28 (10), 01/17/2026 21:21 (1), 03/17/2026 17:33 (2)
Complete: 🔍
Cache ID: 216::103

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