Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 875386b98857822b77ac7f95bdf367b70af5b78c before 925a9129a514b7c3bc0a8af01e51868adbb9a83e; affected 875386b98857822b77ac7f95bdf367b70af5b78c before cbbf1484496aac86038e67ac984949af58009d4b; affected 875386b98857822b77ac7f95bdf367b70af5b78c before a95fc5f1c12bba1dbff72bd2611e7fad0758831b; affected 875386b98857822b77ac7f95bdf367b70af5b78c before c55d649a6cc246c3ccd5d118faea230c46b60f35; affected 875386b98857822b77ac7f95bdf367b70af5b78c before e46160a5d4fa59bf4d5f3412b6b5cb79edb967dd |
| Linux / Linux | affected 6.6; unaffected 0 before 6.6; unaffected 6.6.160 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2.7 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/925a9129a514b7c3bc0a8af01e51868adbb9a83e
- https://git.kernel.org/stable/c/cbbf1484496aac86038e67ac984949af58009d4b
- https://git.kernel.org/stable/c/a95fc5f1c12bba1dbff72bd2611e7fad0758831b
- https://git.kernel.org/stable/c/c55d649a6cc246c3ccd5d118faea230c46b60f35
- https://git.kernel.org/stable/c/e46160a5d4fa59bf4d5f3412b6b5cb79edb967dd