{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-38710",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:24.033Z",
        "datePublished": "2025-09-04T15:33:00.629Z",
        "dateUpdated": "2026-06-01T16:05:30.417Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-01T16:05:30.417Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Validate i_depth for exhash directories\n\nA fuzzer test introduced corruption that ends up with a depth of 0 in\ndir_e_read(), causing an undefined shift by 32 at:\n\n  index = hash >> (32 - dip->i_depth);\n\nAs calculated in an open-coded way in dir_make_exhash(), the minimum\ndepth for an exhash directory is ilog2(sdp->sd_hash_ptrs) and 0 is\ninvalid as sdp->sd_hash_ptrs is fixed as sdp->bsize / 16 at mount time.\n\nSo we can avoid the undefined behaviour by checking for depth values\nlower than the minimum in gfs2_dinode_in(). Values greater than the\nmaximum are already being checked for there.\n\nAlso switch the calculation in dir_make_exhash() to use ilog2() to\nclarify how the depth is calculated.\n\nTested with the syzkaller repro.c and xfstests '-g quick'."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/gfs2/dir.c",
                        "fs/gfs2/glops.c"
                    ],
                    "versions": [
                        {
                            "version": "9a0045088d888c9c539c8c626a366cb52c0fbdab",
                            "lessThan": "076e992752e4b24178918f748d75597c80a408d2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9a0045088d888c9c539c8c626a366cb52c0fbdab",
                            "lessThan": "366183911b153e9b8cf758e1414e1154d7569337",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9a0045088d888c9c539c8c626a366cb52c0fbdab",
                            "lessThan": "112bb60cd0e254a369e95aa9941a694ffeca089f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9a0045088d888c9c539c8c626a366cb52c0fbdab",
                            "lessThan": "cddea0c721106ea480371412d8de21705eb27376",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9a0045088d888c9c539c8c626a366cb52c0fbdab",
                            "lessThan": "53a0249d68a210c16e961b83adfa82f94ee0a53d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9a0045088d888c9c539c8c626a366cb52c0fbdab",
                            "lessThan": "b5f46951e62377b6e406fadc18bc3c5bdf1632a7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9a0045088d888c9c539c8c626a366cb52c0fbdab",
                            "lessThan": "9680c58675b82348ab84d387e4fa727f7587e1a0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9a0045088d888c9c539c8c626a366cb52c0fbdab",
                            "lessThan": "557c024ca7250bb65ae60f16c02074106c2f197b",
                            "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/gfs2/dir.c",
                        "fs/gfs2/glops.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.26",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.26",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.134",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.43",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15.11",
                            "lessThanOrEqual": "6.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16.2",
                            "lessThanOrEqual": "6.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.26",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.26",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.26",
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                                },
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.26",
                                    "versionEndExcluding": "6.6.134"
                                },
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.26",
                                    "versionEndExcluding": "6.12.43"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.26",
                                    "versionEndExcluding": "6.16.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.26",
                                    "versionEndExcluding": "6.17"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/076e992752e4b24178918f748d75597c80a408d2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/366183911b153e9b8cf758e1414e1154d7569337"
                },
                {
                    "url": "https://git.kernel.org/stable/c/112bb60cd0e254a369e95aa9941a694ffeca089f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cddea0c721106ea480371412d8de21705eb27376"
                },
                {
                    "url": "https://git.kernel.org/stable/c/53a0249d68a210c16e961b83adfa82f94ee0a53d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b5f46951e62377b6e406fadc18bc3c5bdf1632a7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9680c58675b82348ab84d387e4fa727f7587e1a0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/557c024ca7250bb65ae60f16c02074106c2f197b"
                }
            ],
            "title": "gfs2: Validate i_depth for exhash directories",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}