CVE-2023-54184

Name: CVE-2023-54184
Creator: NVD / NIST
Published: 2025-12-30T13:16:06.357+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.18%

Last modified Aug 4, 2026

CVE-2023-54184 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsit: Free cmds before session free Commands from recovery entries are freed after session has been closed. That leads to use-after-free at command free or NPE with such call trace: Time2Retain timer expired for SID: 1, cleaning up iSCSI session. BUG: kernel NULL pointer dereference, address: 0000000000000140 RIP: 0010:sbitmap_queue_clear+0x3a/0xa0 Call Trace: target_release_cmd_kref+0xd1/0x1f0 [target_core_mod] transport_generic_free_cmd+0xd1/0x180 [target_core_mod] iscsit_free_cmd+0x53/0xd0 [iscsi_target_mod] iscsit_free_connection_recovery_entries+0x29d/0x320 [iscsi_target_mod] iscsit_close_session+0x13a/0x140 [iscsi_target_mod] iscsit_check_post_dataout+0x440/0x440 [iscsi_target_mod] call_timer_fn+0x24/0x140 Move cleanup of recovery enrties to before session freeing.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsit: Free cmds before session free Commands from recovery entries are freed after session has been closed. That leads to use-after-free at command free or NPE with such call trace: Time2Retain timer expired for SID: 1, cleaning up iSCSI session. BUG: kernel NULL pointer dereference, address: 0000000000000140 RIP: 0010:sbitmap_queue_clear+0x3a/0xa0 Call Trace: target_release_cmd_kref+0xd1/0x1f0 [target_core_mod] transport_generic_free_cmd+0xd1/0x180 [target_core_mod] iscsit_free_cmd+0x53/0xd0 [iscsi_target_mod] iscsit_free_connection_recovery_entries+0x29d/0x320 [iscsi_target_mod] iscsit_close_session+0x13a/0x140 [iscsi_target_mod] iscsit_check_post_dataout+0x440/0x440 [iscsi_target_mod] call_timer_fn+0x24/0x140 Move cleanup of recovery enrties to before session freeing.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.18%

7.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

Vendor	Product	Versions
Linux	Linux	>= 988e3a85463d9b6dabc681df3f8f131b23c19953, < 89f5055f9b0b57c7e7f02e32df95ef401f809b71; >= 988e3a85463d9b6dabc681df3f8f131b23c19953, < 4621e24c9257c6379343bf0c11b473817cf7edcd; >= 988e3a85463d9b6dabc681df3f8f131b23c19953, < 1911cca5916b6e106de7afa3ec0a38447158216c; >= 988e3a85463d9b6dabc681df3f8f131b23c19953, < a7a4def6c7046e090bb10c6d550fdeb487db98ba; >= 988e3a85463d9b6dabc681df3f8f131b23c19953, < 4ce221d295f53e6c6b835ab33181e735482c9aac; >= 988e3a85463d9b6dabc681df3f8f131b23c19953, < d8990b5a4d065f38f35d69bcd627ec5a7f8330ca
Linux	Linux	3.12

References

Timeline

Published: Dec 30, 2025
Last Modified: Aug 4, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2023-54184?

How severe is CVE-2023-54184?

CVE-2023-54184 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2023-54184?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST