CVE-2026-23296

scsi: core: Fix refcount leak for tagset_refcnt

State: Published
Severity: Not scored
Published: Mar 25, 2026
Updated: Oct 15, 2026
Reserved: Jan 13, 2026

Description

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

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	f818708eeeae793e12dc39f8984ed7732048a7d9 to before 0e274674714427dc578bb99db5b86e312d2b57f8Affected 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before 9f5e4abed9248448aa1b45b12ab0bea4d329b56aAffected 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before 7c01b680beaf4d3143866b062b8e770e8b237fb8Affected 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before ec5c17c687b189dbc09dfdec11b669caa40bc395Affected 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before 944a333c8e4d42256556c1d2ebb6d773a33e0dcdAffected 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before a03d96598d39fdf605d90731db3ef3b13fb8bdc8Affected 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before 1ac22c8eae81366101597d48360718dff9b9d980Affected 5ce8fad941233e81f2afb5b52a3fcddd3ba8732fAffected 2e7eb4c1e8af8385de22775bd0be552f59b28c9aAffected 5.15.164 to before 5.15.203Affected 5.10.223 to before 5.11Affected 5.19.12 to before 5.20Affected
LinuxLinux	6.0Affected before 6.0Not affected 5.15.203 through 5.15.Not affected 6.1.167 through 6.1.Not affected 6.6.130 through 6.6.Not affected 6.12.77 through 6.12.Not affected 6.18.17 through 6.18.Not affected 6.19.7 through 6.19.Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

f818708eeeae793e12dc39f8984ed7732048a7d9 to before 0e274674714427dc578bb99db5b86e312d2b57f8Affected
8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before 9f5e4abed9248448aa1b45b12ab0bea4d329b56aAffected
8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before 7c01b680beaf4d3143866b062b8e770e8b237fb8Affected
8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before ec5c17c687b189dbc09dfdec11b669caa40bc395Affected
8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before 944a333c8e4d42256556c1d2ebb6d773a33e0dcdAffected
8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before a03d96598d39fdf605d90731db3ef3b13fb8bdc8Affected
8fe4ce5836e932f5766317cb651c1ff2a4cd0506 to before 1ac22c8eae81366101597d48360718dff9b9d980Affected
5ce8fad941233e81f2afb5b52a3fcddd3ba8732fAffected
2e7eb4c1e8af8385de22775bd0be552f59b28c9aAffected
5.15.164 to before 5.15.203Affected
5.10.223 to before 5.11Affected
5.19.12 to before 5.20Affected

LinuxLinux

6.0Affected
before 6.0Not affected
5.15.203 through 5.15.*Not affected
6.1.167 through 6.1.*Not affected
6.6.130 through 6.6.*Not affected
6.12.77 through 6.12.*Not affected
6.18.17 through 6.18.*Not affected
6.19.7 through 6.19.*Not affected
7.0 and laterNot affected

References

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