{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43484",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:56.012Z",
        "datePublished": "2026-05-13T15:08:30.919Z",
        "dateUpdated": "2026-05-13T15:08:30.919Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-13T15:08:30.919Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: core: Avoid bitfield RMW for claim/retune flags\n\nMove claimed and retune control flags out of the bitfield word to\navoid unrelated RMW side effects in asynchronous contexts.\n\nThe host->claimed bit shared a word with retune flags. Writes to claimed\nin __mmc_claim_host() or retune_now in mmc_mq_queue_rq() can overwrite\nother bits when concurrent updates happen in other contexts, triggering\nspurious WARN_ON(!host->claimed). Convert claimed, can_retune,\nretune_now and retune_paused to bool to remove shared-word coupling."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/mmc/host.h"
                    ],
                    "versions": [
                        {
                            "version": "6c0cedd1ef9527ef13e66875746570e76a3188a7",
                            "lessThan": "41dce4dae583a8ce06a7ebf4ce704c46a142957c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c0cedd1ef9527ef13e66875746570e76a3188a7",
                            "lessThan": "bb7fc2498c3bb25fa6a91f22f4760005325cfbd5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c0cedd1ef9527ef13e66875746570e76a3188a7",
                            "lessThan": "270277c2ab631044867adb1bd2f2433d3892de6e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c0cedd1ef9527ef13e66875746570e76a3188a7",
                            "lessThan": "45038e03f15e992c48603fff8c6b1c9be5397ac9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c0cedd1ef9527ef13e66875746570e76a3188a7",
                            "lessThan": "0e06cc511c61cff1591e5435a207759adcc76b6d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c0cedd1ef9527ef13e66875746570e76a3188a7",
                            "lessThan": "d3a3caf44c8ec26f5d63dc17c1c7242effa60ebc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c0cedd1ef9527ef13e66875746570e76a3188a7",
                            "lessThan": "901084c51a0a8fb42a3f37d2e9c62083c495f824",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/linux/mmc/host.h"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.203",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.167",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.130",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.78",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.19",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.9",
                            "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": "4.15",
                                    "versionEndExcluding": "5.15.203"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.1.167"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.6.130"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.12.78"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.18.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.19.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/41dce4dae583a8ce06a7ebf4ce704c46a142957c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bb7fc2498c3bb25fa6a91f22f4760005325cfbd5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/270277c2ab631044867adb1bd2f2433d3892de6e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/45038e03f15e992c48603fff8c6b1c9be5397ac9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0e06cc511c61cff1591e5435a207759adcc76b6d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d3a3caf44c8ec26f5d63dc17c1c7242effa60ebc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/901084c51a0a8fb42a3f37d2e9c62083c495f824"
                }
            ],
            "title": "mmc: core: Avoid bitfield RMW for claim/retune flags",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}