{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-22114",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-12-29T08:45:45.823Z",
        "datePublished": "2025-04-16T14:12:59.898Z",
        "dateUpdated": "2026-08-05T11:56:51.717Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T11:56:51.717Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't clobber ret in btrfs_validate_super()\n\nCommit 2a9bb78cfd36 (\"btrfs: validate system chunk array at\nbtrfs_validate_super()\") introduces a call to validate_sys_chunk_array()\nin btrfs_validate_super(), which clobbers the value of ret set earlier.\nThis has the effect of negating the validity checks done earlier, making\nit so btrfs could potentially try to mount invalid filesystems."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - The vulnerability is reached by mounting a crafted btrfs image via the mount(2) path (open_ctree → btrfs_validate_mount_super), requiring local system access. Desktop distros brokering loop-device setup and mounting to active local sessions through udisks2/polkit make this a genuine local (not merely physical) path, alongside removable-media automount on kiosks and shared workstations.\nAC:L - The entire image is crafted deterministically offline — a valid superblock checksum, a legitimate 65+ byte sys_chunk_array so validate_sys_chunk_array() returns 0 and clobbers ret, sectorsize=4096 to satisfy alignment checks, and nodesize=1 MiB to overflow the 16-entry page/folio arrays. There is no race, no memory-layout dependency, and no condition outside the attacker's control.\nPR:L - On default desktop configurations an unprivileged local user in an active session can create a loop device and mount an arbitrary filesystem image through udisks2/polkit without additional authentication, and containers or fstab \"user\" entries provide equivalent paths. No real root in the init namespace is needed.\nUI:N - In the loop-device scenario the attacker performs the mount themselves; no separate victim has to open a file, click a prompt, or take any action.\nS:U - The corruption occurs in kernel memory during filesystem mount and is confined to the kernel's own security authority — there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The bypassed nodesize check yields an extent_buffer whose len vastly exceeds its backing storage, giving out-of-bounds reads of kernel memory, and BTRFS_MAX_ITEM_SIZE/csums_per_leaf underflow to enormous values; the bypassed fsid/metadata_uuid/dev_item.fsid checks additionally let a crafted device impersonate another filesystem. The resulting heap and stack corruption is leverageable for arbitrary kernel memory disclosure.\nI:H - btrfs_alloc_page_array() writes an attacker-chosen number of struct page pointers past a 16-entry on-stack array and past the extent_buffer slab object, an out-of-bounds write primitive exploitable for control-flow hijack. The same clobber also defeats btrfs_validate_write_super(), permitting corrupt superblocks to be committed to disk.\nA:H - The overflow reliably panics the kernel — via BUG() from the ASSERT where CONFIG_BTRFS_ASSERT is set, via stack-protector panic, or via oops from the nonsensical geometry (invalid sectorsize_bits shifts, zero/oversized nodesize) propagated throughout the mounted filesystem."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/btrfs/disk-io.c"
                    ],
                    "versions": [
                        {
                            "version": "2a9bb78cfd367fdeff74f15b1e98969912292d9e",
                            "lessThan": "ef6800a2015e706e9852a5ec15263fec9990d012",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2a9bb78cfd367fdeff74f15b1e98969912292d9e",
                            "lessThan": "9db9c7dd5b4e1d3205137a094805980082c37716",
                            "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/btrfs/disk-io.c"
                    ],
                    "versions": [
                        {
                            "version": "6.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.14",
                            "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"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "6.14.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "6.15"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ef6800a2015e706e9852a5ec15263fec9990d012"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9db9c7dd5b4e1d3205137a094805980082c37716"
                }
            ],
            "title": "btrfs: don't clobber ret in btrfs_validate_super()",
            "x_generator": {
                "engine": "bippy-1.2.0"
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}