{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53204",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-06-09T07:44:35.391Z",
        "datePublished": "2026-06-25T08:39:11.618Z",
        "dateUpdated": "2026-06-25T08:39:11.618Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-25T08:39:11.618Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: stratix10-rsu: Fix NULL deref on rsu_send_msg() timeout in probe\n\nrsu_send_msg() can return -ETIMEDOUT when\nwait_for_completion_interruptible_timeout() fires while the SMC call is still\npending. In stratix10_rsu_probe(), the error paths for COMMAND_RSU_DCMF_VERSION,\nCOMMAND_RSU_DCMF_STATUS, COMMAND_RSU_MAX_RETRY and COMMAND_RSU_GET_SPT_TABLE\ncall stratix10_svc_free_channel() - which sets chan->scl to NULL - but then\nfall through and queue the next request on the same channel. The next svc\nkthread that runs will dereference pdata->chan->scl in its receive callback\npath, triggering a NULL pointer dereference identical to the one fixed by\ncommit c45f7263100c (\"firmware: stratix10-rsu: Fix NULL pointer dereference\nwhen RSU is disabled\") for the COMMAND_RSU_STATUS path.\n\nApply the same cleanup pattern to the remaining failure paths: remove the\nasync client, free the channel, and return early so no further messages are\nqueued on a channel whose scl has been cleared.\n\nWhile at it, clean up stratix10_rsu_probe() in two ways without changing\nbehavior:\n\n- Drop redundant zero-initialization of fields already cleared by\n  devm_kzalloc(): client.receive_cb, status.* and spt0/1_address\n  (INVALID_SPT_ADDRESS is 0x0).\n\n- Replace five identical 3-line error-cleanup blocks\n  (stratix10_svc_remove_async_client() + stratix10_svc_free_channel() +\n  return ret) with goto labels (remove_async_client, free_channel),\n  matching the standard kernel resource-unwinding pattern and making it\n  easier to extend the probe sequence without forgetting matching\n  cleanup.\n\nAlso move init_completion() next to mutex_init() so sync-primitive\ninitialization is grouped before anything that could trigger a\ncallback.\n\n---\nv2: Add a minor clean-up of the function stratix10_rsu_probe() to have a\n    centralize exit for all the rsu_send_async_msg() and rsu_send_msg()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/firmware/stratix10-rsu.c"
                    ],
                    "versions": [
                        {
                            "version": "15847537b623f844d9a08da99ff4568315e1d4f8",
                            "lessThan": "6bc249d324241c64118a3018124798c28e2950f7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "15847537b623f844d9a08da99ff4568315e1d4f8",
                            "lessThan": "bfd2eb9bba548a8f63c3339bb1fb9a2031a42d86",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/firmware/stratix10-rsu.c"
                    ],
                    "versions": [
                        {
                            "version": "6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.13",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.0.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/6bc249d324241c64118a3018124798c28e2950f7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bfd2eb9bba548a8f63c3339bb1fb9a2031a42d86"
                }
            ],
            "title": "firmware: stratix10-rsu: Fix NULL deref on rsu_send_msg() timeout in probe",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}