scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error qla_nvme_xmt_ls_rsp() obtains uctx, which was linked into fcport->unsol_ctx_head by qla2xxx_process_purls_iocb() and is still linked when the NVMe transport calls back to transmit the LS response. On the error (out:) path the function frees uctx with kfree() but never removes it from the list. This leaves a freed node in fcport->unsol_ctx_head: the next list_add_tail() for that fcport writes through the freed node, and a subsequent list_del() can corrupt the list or panic. Unlink uctx with list_del() before kfree() on the error path, matching the other free sites in qla_nvme_release_lsrsp_cmd_kref() and qla2xxx_process_purls_pkt(). qla2x00_rel_sp() in the failure path only returns the SRB to its pool and does not invoke sp->put_fn, so the out: path is the sole free and uctx is always still linked there.

Timeline

1. Sep 25, 2026, 10:21 AM UTCCVE published
2. Oct 21, 2026, 12:53 PM UTCRecord last updated

Affected versions

• Linux Linux

  From 875386b98857822b77ac7f95bdf367b70af5b78c · fixed in 925a9129a514b7c3bc0a8af01e51868adbb9a83e; From 875386b98857822b77ac7f95bdf367b70af5b78c · fixed in cbbf1484496aac86038e67ac984949af58009d4b; From 875386b98857822b77ac7f95bdf367b70af5b78c · fixed in a95fc5f1c12bba1dbff72bd2611e7fad0758831b; From 875386b98857822b77ac7f95bdf367b70af5b78c · fixed in c55d649a6cc246c3ccd5d118faea230c46b60f35; From 875386b98857822b77ac7f95bdf367b70af5b78c · fixed in e46160a5d4fa59bf4d5f3412b6b5cb79edb967dd

• Linux Linux

  6.6

• KernelLinux

  From 6.6.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.53; From 6.19.0 · fixed in 7.2.7

References 5