RDMA/siw: Fix potential NULL pointer dereference in header processing

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/infiniband/sw/siw/siw_qp_rx.c"
                    ],
                    "versions": [
                        {
                            "version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
                            "lessThan": "ab61841633d10e56a58c1493a262f0d02dba2f5e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
                            "lessThan": "8564dcc12fbb372d984ab45768cae9335777b274",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
                            "lessThan": "ab957056192d6bd068b3759cb2077d859cca01f0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
                            "lessThan": "ffba40b67663567481fa8a1ed5d2da36897c175d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
                            "lessThan": "87b7a036d2c73d5bb3ae2d47dee23de465db3355",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
                            "lessThan": "714c99e1dc8f85f446e05be02ba83972e981a817",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
                            "lessThan": "ce025f7f5d070596194315eb2e4e89d568b8a755",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
                            "lessThan": "14ab3da122bd18920ad57428f6cf4fade8385142",
                            "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/infiniband/sw/siw/siw_qp_rx.c"
                    ],
                    "versions": [
                        {
                            "version": "5.3",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.3",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.252",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.202",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.165",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.128",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.14",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.4",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }