Linux Kernel up to 6.4.4 fc_bsg_to_rport null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.4.4. This issue affects the function fc_bsg_to_rport. Such manipulation leads to null pointer dereference. This vulnerability is referenced as CVE-2023-54014. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.4.4. It has been rated as critical. Affected by this issue is the function fc_bsg_to_rport. 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: Check valid rport returned by fc_bsg_to_rport() Klocwork reported warning of rport maybe NULL and will be dereferenced. rport returned by call to fc_bsg_to_rport() could be NULL and dereferenced. Check valid rport returned by fc_bsg_to_rport().

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2023-54014 since 12/24/2025. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 279955 (Linux Distros Unpatched Vulnerability : CVE-2023-54014), 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 f35bd94b4e11c41de90cd0fa72c9062e8196822f/ccd3bc595bda67db5a347b9050c2df28f292d3fb/1b7e5bdf2be22ae8c61bdca5a5f96ec2746e9639/921d6844625527a92d1178262a633cc88a8e61bd/1ccd52b790a66b8b5f75c87eab8c3a37f941a2bf/e466930717ef18c112585a39fc6174d8eb441df5/ced5460eae772e847debbc0b65ef93aedab92d3f/af73f23a27206ffb3c477cac75b5fcf03410556e 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 (279955) and CERT Bund (WID-SEC-2025-2920). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Open Source Linux Kernel

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

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

CVSSv2info

AVACAuCIA
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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: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 279955
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-54014

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: f35bd94b4e11c41de90cd0fa72c9062e8196822f/ccd3bc595bda67db5a347b9050c2df28f292d3fb/1b7e5bdf2be22ae8c61bdca5a5f96ec2746e9639/921d6844625527a92d1178262a633cc88a8e61bd/1ccd52b790a66b8b5f75c87eab8c3a37f941a2bf/e466930717ef18c112585a39fc6174d8eb441df5/ced5460eae772e847debbc0b65ef93aedab92d3f/af73f23a27206ffb3c477cac75b5fcf03410556e

Timelineinfo

12/24/2025 Advisory disclosed
12/24/2025 +0 days CVE reserved
12/24/2025 +0 days VulDB entry created
12/26/2025 +2 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-54014 (🔒)
GCVE (CVE): GCVE-0-2023-54014
GCVE (VulDB): GCVE-100-338210
CERT Bund: WID-SEC-2025-2920 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 12/24/2025 15:29
Updated: 12/26/2025 07:47
Changes: 12/24/2025 15:29 (58), 12/25/2025 07:02 (7), 12/26/2025 07:47 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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