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CVE-2026-23296

Updated on 25 Mar 2026

Severity

5.5 Medium severity

Details

CVSS score
5.5
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

In the Linux kernel, the following vulnerability has been resolved:

scsi: core: Fix refcount leak for tagset_refcnt

This leak will cause a hang when tearing down the SCSI host. For example, iscsid hangs with the following call trace:

[130120.652718] scsi_alloc_sdev: Allocation failure during SCSI scanning, some SCSI devices might not be configured

PID: 2528 TASK: ffff9d0408974e00 CPU: 3 COMMAND: “iscsid” #0 [ffffb5b9c134b9e0] __schedule at ffffffff860657d4 #1 [ffffb5b9c134ba28] schedule at ffffffff86065c6f #2 [ffffb5b9c134ba40] schedule_timeout at ffffffff86069fb0 #3 [ffffb5b9c134bab0] __wait_for_common at ffffffff8606674f #4 [ffffb5b9c134bb10] scsi_remove_host at ffffffff85bfe84b #5 [ffffb5b9c134bb30] iscsi_sw_tcp_session_destroy at ffffffffc03031c4 [iscsi_tcp] #6 [ffffb5b9c134bb48] iscsi_if_recv_msg at ffffffffc0292692 [scsi_transport_iscsi] #7 [ffffb5b9c134bb98] iscsi_if_rx at ffffffffc02929c2 [scsi_transport_iscsi] #8 [ffffb5b9c134bbf0] netlink_unicast at ffffffff85e551d6 #9 [ffffb5b9c134bc38] netlink_sendmsg at ffffffff85e554ef

Details

Affected product:
Ubuntu 20.04 ELS
Affected packages:
linux-meta @ 5.4.0

Fixes

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
Amazon Linux 2023 Planned —
Debian 12 Planned —
Debian 13 Planned —
Oracle Linux 8 UEK 7 Released
47 kernels
  • 5.15.0-302.167.6.el8uek
  • 5.15.0-302.167.6.1.el8uek
  • 5.15.0-303.171.5.2.el8uek
  • 5.15.0-303.171.5.2.1.el8uek
  • 5.15.0-304.171.4.el8uek
  • 5.15.0-304.171.4.1.el8uek
  • 5.15.0-304.171.4.3.el8uek
  • 5.15.0-303.171.5.2.2.el8uek
  • 5.15.0-305.176.4.el8uek
  • 5.15.0-306.177.4.el8uek
  • 5.15.0-306.177.4.1.el8uek
  • 5.15.0-307.178.5.el8uek
  • 5.15.0-308.179.6.el8uek
  • 5.15.0-308.179.6.2.el8uek
  • 5.15.0-308.179.6.3.el8uek
  • 5.15.0-309.180.4.el8uek
  • 5.15.0-308.179.6.7.el8uek
  • 5.15.0-309.180.4.2.el8uek
  • 5.15.0-308.179.6.11.el8uek
  • 5.15.0-310.184.5.2.el8uek
  • 5.15.0-310.184.5.3.el8uek
  • 5.15.0-311.185.9.el8uek
  • 5.15.0-308.179.6.14.el8uek
  • 5.15.0-312.187.5.el8uek
  • 5.15.0-312.187.5.1.el8uek
  • 5.15.0-312.187.5.2.el8uek
  • 5.15.0-312.187.5.3.el8uek
  • 5.15.0-308.179.6.16.el8uek
  • 5.15.0-313.189.5.1.el8uek
  • 5.15.0-313.189.5.2.el8uek
  • 5.15.0-313.189.5.3.el8uek
  • 5.15.0-314.193.5.3.el8uek
  • 5.15.0-314.193.5.4.el8uek
  • 5.15.0-314.193.5.5.el8uek
  • 5.15.0-315.196.5.1.el8uek
  • 5.15.0-315.196.5.2.el8uek
  • 5.15.0-316.196.4.1.el8uek
  • 5.15.0-316.196.4.2.el8uek
  • 5.15.0-317.197.5.1.el8uek
  • 5.15.0-317.197.5.2.el8uek
  • 5.15.0-318.199.3.2.el8uek
  • 5.15.0-318.199.3.2.1.el8uek
  • 5.15.0-319.201.4.2.el8uek
  • 5.15.0-319.201.4.3.el8uek
  • 5.15.0-319.201.4.4.el8uek
  • 5.15.0-319.201.4.6.el8uek
  • 5.15.0-318.199.3.6.el8uek
Oracle Linux 9 UEK 7 Released
47 kernels
  • 5.15.0-302.167.6.el9uek
  • 5.15.0-302.167.6.1.el9uek
  • 5.15.0-303.171.5.2.el9uek
  • 5.15.0-303.171.5.2.1.el9uek
  • 5.15.0-304.171.4.el9uek
  • 5.15.0-304.171.4.1.el9uek
  • 5.15.0-304.171.4.3.el9uek
  • 5.15.0-303.171.5.2.2.el9uek
  • 5.15.0-305.176.4.el9uek
  • 5.15.0-306.177.4.el9uek
  • 5.15.0-306.177.4.1.el9uek
  • 5.15.0-307.178.5.el9uek
  • 5.15.0-308.179.6.el9uek
  • 5.15.0-308.179.6.2.el9uek
  • 5.15.0-308.179.6.3.el9uek
  • 5.15.0-309.180.4.el9uek
  • 5.15.0-308.179.6.7.el9uek
  • 5.15.0-309.180.4.2.el9uek
  • 5.15.0-308.179.6.11.el9uek
  • 5.15.0-310.184.5.2.el9uek
  • 5.15.0-310.184.5.3.el9uek
  • 5.15.0-311.185.9.el9uek
  • 5.15.0-308.179.6.14.el9uek
  • 5.15.0-312.187.5.el9uek
  • 5.15.0-312.187.5.1.el9uek
  • 5.15.0-312.187.5.2.el9uek
  • 5.15.0-312.187.5.3.el9uek
  • 5.15.0-308.179.6.16.el9uek
  • 5.15.0-313.189.5.1.el9uek
  • 5.15.0-313.189.5.2.el9uek
  • 5.15.0-313.189.5.3.el9uek
  • 5.15.0-314.193.5.3.el9uek
  • 5.15.0-314.193.5.4.el9uek
  • 5.15.0-314.193.5.5.el9uek
  • 5.15.0-315.196.5.1.el9uek
  • 5.15.0-315.196.5.2.el9uek
  • 5.15.0-316.196.4.1.el9uek
  • 5.15.0-316.196.4.2.el9uek
  • 5.15.0-317.197.5.1.el9uek
  • 5.15.0-317.197.5.2.el9uek
  • 5.15.0-318.199.3.2.el9uek
  • 5.15.0-318.199.3.2.1.el9uek
  • 5.15.0-319.201.4.2.el9uek
  • 5.15.0-319.201.4.3.el9uek
  • 5.15.0-319.201.4.4.el9uek
  • 5.15.0-319.201.4.6.el9uek
  • 5.15.0-318.199.3.6.el9uek
Ubuntu 22.04 Planned —
Ubuntu 24.04 Planned —