ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/inode.c",
                        "fs/ext4/xattr.c",
                        "fs/ext4/xattr.h"
                    ],
                    "versions": [
                        {
                            "version": "e50e5129f384ae282adebfb561189cdb19b81cee",
                            "lessThan": "27202452b0bc942fdc3db72a44c4dcdab96d5b56",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e50e5129f384ae282adebfb561189cdb19b81cee",
                            "lessThan": "b374e9ecc92aaa7fb2ab221ee3ff5451118ab566",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e50e5129f384ae282adebfb561189cdb19b81cee",
                            "lessThan": "c000a8a9b5343a5ef867df173c6349672dacbd0f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e50e5129f384ae282adebfb561189cdb19b81cee",
                            "lessThan": "3c591353956ffcace2cc74d09930774afed60619",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e50e5129f384ae282adebfb561189cdb19b81cee",
                            "lessThan": "098927a13fd918bd7c64c2de905350a1ad7b4a3a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e50e5129f384ae282adebfb561189cdb19b81cee",
                            "lessThan": "0c8fbb6ffb3c8f5164572ca88e4ccb6cd6a41ca8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e50e5129f384ae282adebfb561189cdb19b81cee",
                            "lessThan": "5701875f9609b000d91351eaa6bfd97fe2f157f4",
                            "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/inode.c",
                        "fs/ext4/xattr.c",
                        "fs/ext4/xattr.h"
                    ],
                    "versions": [
                        {
                            "version": "4.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.248",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.198",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.161",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.120",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.59",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14.2",
                            "lessThanOrEqual": "6.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }