phonet: pep: fix use-after-free in pep_get_sb()

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/phonet/pep.c"
                    ],
                    "versions": [
                        {
                            "version": "9641458d3ec42def729fde64669abf07f3220cd5",
                            "lessThan": "c4a52cb4da8d57d060b1d52085d25147a238dac2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9641458d3ec42def729fde64669abf07f3220cd5",
                            "lessThan": "df198743859fefba2f824115f8151dd62d7ad6d8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9641458d3ec42def729fde64669abf07f3220cd5",
                            "lessThan": "1d81e19fc57a5ee55b4497d01bc0510d76fb9578",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9641458d3ec42def729fde64669abf07f3220cd5",
                            "lessThan": "8d931a75a38b9bb584a4071f5ebbd52755fc35ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9641458d3ec42def729fde64669abf07f3220cd5",
                            "lessThan": "17f78c0c0d41d738ee236eb6e841e39395188054",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9641458d3ec42def729fde64669abf07f3220cd5",
                            "lessThan": "a48a889b60f73edb0399a8b08284a2ab0bd0295f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9641458d3ec42def729fde64669abf07f3220cd5",
                            "lessThan": "25e3641beb51333bfbb155af2fd2573a61113af2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9641458d3ec42def729fde64669abf07f3220cd5",
                            "lessThan": "0f71f852a96af9685858ce59fda34ecbf85c283d",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/phonet/pep.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.28",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.28",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.148",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }