ext4: check dir entry fits before reading the hash trailer in ext4_search_dir()

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/namei.c"
                    ],
                    "versions": [
                        {
                            "version": "471fbbea7ff7061b2d6474665cb5a2ceb4fd6500",
                            "lessThan": "4d20106c536b73c4a8a02652dc85e35898baebf7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "471fbbea7ff7061b2d6474665cb5a2ceb4fd6500",
                            "lessThan": "61a395967de06edba58760e81907a272db749faa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "471fbbea7ff7061b2d6474665cb5a2ceb4fd6500",
                            "lessThan": "e94676a08af6312aa72d8a981232b281f9bcfcf5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "471fbbea7ff7061b2d6474665cb5a2ceb4fd6500",
                            "lessThan": "d8c184bec24b5a00ae96d704856d935eaded1685",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "471fbbea7ff7061b2d6474665cb5a2ceb4fd6500",
                            "lessThan": "3933884bc3102898b458c53fbd1ac52eb9cdb8a4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "471fbbea7ff7061b2d6474665cb5a2ceb4fd6500",
                            "lessThan": "83663c0b739480c00cfe785675db87520ec484ed",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "471fbbea7ff7061b2d6474665cb5a2ceb4fd6500",
                            "lessThan": "c7e6b863d298f56522d0d08554bbea7f142e6588",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/namei.c"
                    ],
                    "versions": [
                        {
                            "version": "5.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }