{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-54021",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-24T10:53:46.179Z",
        "datePublished": "2025-12-24T10:55:51.373Z",
        "dateUpdated": "2026-05-11T19:53:45.739Z"
    },
    "containers": {
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                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:53:45.739Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: set goal start correctly in ext4_mb_normalize_request\n\nWe need to set ac_g_ex to notify the goal start used in\next4_mb_find_by_goal. Set ac_g_ex instead of ac_f_ex in\next4_mb_normalize_request.\nBesides we should assure goal start is in range [first_data_block,\nblocks_count) as ext4_mb_initialize_context does.\n\n[ Added a check to make sure size is less than ar->pright; otherwise\n  we could end up passing an underflowed value of ar->pright - size to\n  ext4_get_group_no_and_offset(), which will trigger a BUG_ON later on.\n  - TYT ]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/mballoc.c"
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                            "lessThan": "2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530",
                            "status": "affected",
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                            "status": "affected",
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                            "lessThan": "cee78217a7ae72d11c2e21e1a5263b8044489823",
                            "status": "affected",
                            "versionType": "git"
                        },
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                            "lessThan": "3ca3005b502ca8ea87d6a344323b179b48c4e4a3",
                            "status": "affected",
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                            "status": "affected",
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                            "lessThan": "b07ffe6927c75d99af534d685282ea188d9f71a6",
                            "status": "affected",
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                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/mballoc.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.25",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.25",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.316",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.284",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.244",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.181",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.113",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.30",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.3.4",
                            "lessThanOrEqual": "6.3.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530"
                },
                {
                    "url": "https://git.kernel.org/stable/c/390eee955d4de4662db5e3e9e9a9eae020432cb7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cee78217a7ae72d11c2e21e1a5263b8044489823"
                },
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                    "url": "https://git.kernel.org/stable/c/3ca3005b502ca8ea87d6a344323b179b48c4e4a3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bc4a3e1d07a86ae5845321d371190244acacb2f2"
                },
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                    "url": "https://git.kernel.org/stable/c/c6bee8970075b256fc1b07bf4873049219380818"
                },
                {
                    "url": "https://git.kernel.org/stable/c/abb330ffaa3a0ae7ce632e28c9260b461c01f19f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b07ffe6927c75d99af534d685282ea188d9f71a6"
                }
            ],
            "title": "ext4: set goal start correctly in ext4_mb_normalize_request",
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