{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98524",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.355Z",
        "datePublished": "2026-10-18T15:17:41.420Z",
        "dateUpdated": "2026-10-19T09:21:06.038Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:21:06.038Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrds: ib: Clear the sg list when mapping an MR fails\n\nrds_ib_map_frmr() stores the caller's scatterlist in the MR before DMA\nmapping and registration can fail. On failure, __rds_rdma_map() unpins\nthe pages and frees the scatterlist, but rds_ib_free_frmr() can still\nreturn the MR to the pool with the stale pointer set.\n\nThis leaves the pool with a dangling scatterlist and can lead to local\nprivilege escalation. KASAN detects the resulting use-after-free when the\nMR is later torn down:\n\nBUG: KASAN: slab-use-after-free in __rds_ib_teardown_mr\nRead of size 8\n\nCall Trace:\n __rds_ib_teardown_mr\n rds_ib_unreg_frmr\n rds_ib_flush_mr_pool\n rds_ib_flush_mrs\n rds_free_mr\n rds_setsockopt\n\nStore the scatterlist in the MR only after DMA mapping succeeds. If DMA\nmapping fails, return directly while the MR fields remain clear; the caller\nkeeps ownership of the scatterlist and its pinned pages. If a later\nregistration step fails, unmap the scatterlist and clear the MR fields\nbefore returning."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/rds/ib_frmr.c"
                    ],
                    "versions": [
                        {
                            "version": "1659185fb4d0025835eb2058a141f0746c5cab00",
                            "lessThan": "1be3211e6ac77adbb1eac01314d989d243b32c59",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1659185fb4d0025835eb2058a141f0746c5cab00",
                            "lessThan": "c42d316163f89cd23de2f3e24558177a8c29bad8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1659185fb4d0025835eb2058a141f0746c5cab00",
                            "lessThan": "8dca3c81344532a7f05edb3d12f31f3009410a90",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1659185fb4d0025835eb2058a141f0746c5cab00",
                            "lessThan": "49ba5ed0129906e0362c2e4b5e21c89b2a41e115",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1659185fb4d0025835eb2058a141f0746c5cab00",
                            "lessThan": "4468df5bcdef959fd96494e9968f323561a45f4c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1659185fb4d0025835eb2058a141f0746c5cab00",
                            "lessThan": "e2ee0616260080376123997488b5cf8a3870b8d9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1659185fb4d0025835eb2058a141f0746c5cab00",
                            "lessThan": "b36d32f30c3f1e58e3a5ae79d0f52836a316b36e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1659185fb4d0025835eb2058a141f0746c5cab00",
                            "lessThan": "58eb1b3325edac42dc6df72c80962bd53a3c8ca7",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/rds/ib_frmr.c"
                    ],
                    "versions": [
                        {
                            "version": "4.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.55",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.9",
                            "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": "4.6",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.6",
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                                },
                                {
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                                    "versionStartIncluding": "4.6",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1be3211e6ac77adbb1eac01314d989d243b32c59"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c42d316163f89cd23de2f3e24558177a8c29bad8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8dca3c81344532a7f05edb3d12f31f3009410a90"
                },
                {
                    "url": "https://git.kernel.org/stable/c/49ba5ed0129906e0362c2e4b5e21c89b2a41e115"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4468df5bcdef959fd96494e9968f323561a45f4c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e2ee0616260080376123997488b5cf8a3870b8d9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b36d32f30c3f1e58e3a5ae79d0f52836a316b36e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/58eb1b3325edac42dc6df72c80962bd53a3c8ca7"
                }
            ],
            "title": "rds: ib: Clear the sg list when mapping an MR fails",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}