{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43153",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.989Z",
        "datePublished": "2026-05-06T11:27:34.446Z",
        "dateUpdated": "2026-08-05T12:26:13.566Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:26:13.566Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: remove xfs_attr_leaf_hasname\n\nThe calling convention of xfs_attr_leaf_hasname() is problematic, because\nit returns a NULL buffer when xfs_attr3_leaf_read fails, a valid buffer\nwhen xfs_attr3_leaf_lookup_int returns -ENOATTR or -EEXIST, and a\nnon-NULL buffer pointer for an already released buffer when\nxfs_attr3_leaf_lookup_int fails with other error values.\n\nFix this by simply open coding xfs_attr_leaf_hasname in the callers, so\nthat the buffer release code is done by each caller of\nxfs_attr3_leaf_read."
                }
            ],
            "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 vulnerable XFS attr path is reached through local extended-attribute syscalls such as setxattr/removexattr on a mounted XFS filesystem, not through network packet processing.\nAC:L - Given a crafted or corrupted one-block XFS attribute leaf, the erroneous buffer release path is deterministic and does not require winning a race or depending on heap layout to trigger.\nPR:L - An unprivileged local user can reach the update path through user.* xattrs on regular files or directories for which they have normal write permission; the trigger does not require CAP_SYS_ADMIN once the filesystem is mounted.\nUI:N - The attacker can invoke the xattr operation directly; no additional victim action is needed for the vulnerable code path after the XFS filesystem is available.\nS:U - The corruption occurs inside the kernel/XFS buffer management path and does not cross a separate security authority such as a VM or device isolation boundary.\nC:H - The stale xfs_buf pointer can be released a second time, creating use-after-free/refcount corruption in kernel buffer/log-item objects, which can reasonably support kernel memory disclosure primitives.\nI:H - The double release is kernel memory corruption of reusable buffer-management objects, which is reasonably treatable as exploitable for arbitrary write or control-flow impact under the required higher-severity rule.\nA:H - At minimum, the stale or already freed buffer/log-item path can cause a kernel oops, panic, deadlock, or filesystem shutdown when repeatedly triggered."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/xfs/libxfs/xfs_attr.c"
                    ],
                    "versions": [
                        {
                            "version": "07120f1abdff80f3d1351f733661abe28d609535",
                            "lessThan": "2fbc8421d1db102c0e5458607e042a23a03648b1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07120f1abdff80f3d1351f733661abe28d609535",
                            "lessThan": "457121c01f609b9934addbb04d5c1ef638c71c61",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07120f1abdff80f3d1351f733661abe28d609535",
                            "lessThan": "530082df991903f3330354e99e0cb7b05debfa86",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07120f1abdff80f3d1351f733661abe28d609535",
                            "lessThan": "3a65ea768b8094e4699e72f9ab420eb9e0f3f568",
                            "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/xfs/libxfs/xfs_attr.c"
                    ],
                    "versions": [
                        {
                            "version": "5.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.16",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.6",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "5.9",
                                    "versionEndExcluding": "6.12.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.18.16"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.19.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/2fbc8421d1db102c0e5458607e042a23a03648b1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/457121c01f609b9934addbb04d5c1ef638c71c61"
                },
                {
                    "url": "https://git.kernel.org/stable/c/530082df991903f3330354e99e0cb7b05debfa86"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3a65ea768b8094e4699e72f9ab420eb9e0f3f568"
                }
            ],
            "title": "xfs: remove xfs_attr_leaf_hasname",
            "x_generator": {
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}