Linux Kernel up to 6.4.4 terminate_rport_io use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.4.4. This vulnerability affects the function terminate_rport_io. Executing a manipulation can lead to use after free. The identification of this vulnerability is CVE-2023-53322. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.4.4. This vulnerability affects the function terminate_rport_io. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Wait for io return on terminate rport System crash due to use after free. Current code allows terminate_rport_io to exit before making sure all IOs has returned. For FCP-2 device, IO's can hang on in HW because driver has not tear down the session in FW at first sign of cable pull. When dev_loss_tmo timer pops, terminate_rport_io is called and upper layer is about to free various resources. Terminate_rport_io trigger qla to do the final cleanup, but the cleanup might not be fast enough where it leave qla still holding on to the same resource. Wait for IO's to return to upper layer before resources are freed.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2023-53322 since 09/16/2025. The exploitation appears to be easy. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 12/27/2025).

The vulnerability scanner Nessus provides a plugin with the ID 265203 (Linux Distros Unpatched Vulnerability : CVE-2023-53322), 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 8a55556cd7e0220486163b1285ce11a8be2ce5fa/4647d2e88918a078359d1532d90c417a38542c9e/d25fded78d88e1515439b3ba581684d683e0b6ab/a9fe97fb7b4ee21bffb76f2acb05769bad27ae70/079c8264ed9fea8cbcac01ad29040f901cbc3692/90770dad1eb30967ebd8d37d82830bcf270b3293/5bcdaafd92be6035ddc77fa76650cf9dd5b864c4/fc0cba0c7be8261a1625098bd1d695077ec621c9 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 (265203) and CERT Bund (WID-SEC-2025-2077). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: 265203
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53322

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: 8a55556cd7e0220486163b1285ce11a8be2ce5fa/4647d2e88918a078359d1532d90c417a38542c9e/d25fded78d88e1515439b3ba581684d683e0b6ab/a9fe97fb7b4ee21bffb76f2acb05769bad27ae70/079c8264ed9fea8cbcac01ad29040f901cbc3692/90770dad1eb30967ebd8d37d82830bcf270b3293/5bcdaafd92be6035ddc77fa76650cf9dd5b864c4/fc0cba0c7be8261a1625098bd1d695077ec621c9

Timelineinfo

09/16/2025 Advisory disclosed
09/16/2025 +0 days CVE reserved
09/16/2025 +0 days VulDB entry created
12/27/2025 +102 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53322 (🔒)
GCVE (CVE): GCVE-0-2023-53322
GCVE (VulDB): GCVE-100-324514
CERT Bund: WID-SEC-2025-2077 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/16/2025 20:37
Updated: 12/27/2025 12:28
Changes: 09/16/2025 20:37 (58), 09/19/2025 22:31 (2), 10/21/2025 05:55 (7), 12/10/2025 21:41 (11), 12/27/2025 12:28 (1)
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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