{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98248",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.330Z",
        "datePublished": "2026-10-06T08:45:16.693Z",
        "dateUpdated": "2026-10-19T09:16:19.730Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:16:19.730Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: percpu: Fix LSE operations on {8,16}-bit types\n\nThe assembly for __percpu_##name##_case_##sz() and\n__percpu_##name##_return_case_##sz() doesn't use the 'sfx' macro\nargument to form the LSE instruction. Without 'sfx', a W register\nargument will imply a 32-bit memory location, and consequently\n{8,16}-bit ops will erroneously read and write 32 bits of memory when\nthe LSE instruction is used.\n\nFix this by appending 'sfx' to 'op_lse' to LSE instruction. It is not\nnecessary (and not valid) to append 'sfx' to 'op_llsc', as 'op_llsc' is\na register-register operation which does not access memory (and does not\ntake a size suffix)."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/arm64/include/asm/percpu.h"
                    ],
                    "versions": [
                        {
                            "version": "959bf2fd03b59fc107584c21425f3dc73c49f762",
                            "lessThan": "d69ab4480e49bf925f4781afcc9f284affcb96b6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "959bf2fd03b59fc107584c21425f3dc73c49f762",
                            "lessThan": "390742871a723b52de9b92a94c0d1c85a2531e3e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "959bf2fd03b59fc107584c21425f3dc73c49f762",
                            "lessThan": "843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "959bf2fd03b59fc107584c21425f3dc73c49f762",
                            "lessThan": "8cf2093f5372952a9ebc805c418d45df7112cd14",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/arm64/include/asm/percpu.h"
                    ],
                    "versions": [
                        {
                            "version": "5.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.54",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.8",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "5.0",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.0",
                                    "versionEndExcluding": "6.18.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.0",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.0",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d69ab4480e49bf925f4781afcc9f284affcb96b6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/390742871a723b52de9b92a94c0d1c85a2531e3e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8cf2093f5372952a9ebc805c418d45df7112cd14"
                }
            ],
            "title": "arm64: percpu: Fix LSE operations on {8,16}-bit types",
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                "engine": "bippy-1.2.0"
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    }
}