CVE-2026-23296

Summary

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

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/0e274674714427dc578bb99db5b86e312d2b57f8
• https://git.kernel.org/stable/c/9f5e4abed9248448aa1b45b12ab0bea4d329b56a
• https://git.kernel.org/stable/c/7c01b680beaf4d3143866b062b8e770e8b237fb8
• https://git.kernel.org/stable/c/ec5c17c687b189dbc09dfdec11b669caa40bc395
• https://git.kernel.org/stable/c/944a333c8e4d42256556c1d2ebb6d773a33e0dcd
• https://git.kernel.org/stable/c/a03d96598d39fdf605d90731db3ef3b13fb8bdc8
• https://git.kernel.org/stable/c/1ac22c8eae81366101597d48360718dff9b9d980

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