{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98342",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.342Z",
        "datePublished": "2026-10-06T08:46:32.366Z",
        "dateUpdated": "2026-10-19T09:17:53.321Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:17:53.321Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: wait for RCU readers before releasing dma_device\n\ndma_issue_pending_all() walks the dma_device_list with\nlist_for_each_entry_rcu() under rcu_read_lock(). dma_device_release()\nunlinks the device with list_del_rcu() and then calls\ndevice->device_release() (which in many drivers, such as plx_dma.c,\ndirectly calls kfree()).\n\nBecause there is no grace period between unlinking the device and\nfreeing it, concurrent RCU readers in dma_issue_pending_all() can\naccess the device after it has been freed.\n\nThe lockless walk originally relied on clients holding a dmaengine\nreference to pin the provider module, and therefore the device, for as\nlong as they might traverse the list. Commit 8ad342a86359 (\"dmaengine:\nAdd reference counting to dma_device struct\") decoupled the dma_device\nlifetime from the module reference, so the device can now be released\nwhile a reader is still walking the list.\n\nAdd synchronize_rcu() before the device is freed, so RCU readers are\nguaranteed to have finished. Keep it unconditional: providers that do\nnot implement device_release() free the device themselves once\ndma_async_device_unregister() returns. This call will delay for a grace\nperiod with dma_list_mutex held, which is safe and only teardown path is\ndelayed."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/dma/dmaengine.c"
                    ],
                    "versions": [
                        {
                            "version": "2ba05622b8b143b0c95968ba59bddfbd6d2f2559",
                            "lessThan": "ac8ce9f89638d6d79875cca7d8ae42566a9bde15",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2ba05622b8b143b0c95968ba59bddfbd6d2f2559",
                            "lessThan": "14578c78405d51fa92e4ada4502a45f537c0fcb8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2ba05622b8b143b0c95968ba59bddfbd6d2f2559",
                            "lessThan": "cbb3310a5167e868a5e763e32b9a23b4d50669ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2ba05622b8b143b0c95968ba59bddfbd6d2f2559",
                            "lessThan": "8577a5ec4f7e00443015ef99f646def093121a1b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2ba05622b8b143b0c95968ba59bddfbd6d2f2559",
                            "lessThan": "4448a539a0c39141cccc67be6cacde0f35024313",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2ba05622b8b143b0c95968ba59bddfbd6d2f2559",
                            "lessThan": "fc1f4884f1d46fc7a8cee6e2997ecc9e8d1c7f77",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2ba05622b8b143b0c95968ba59bddfbd6d2f2559",
                            "lessThan": "4aed7e47a10b94ea3c5171e8d1382081accd2e03",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2ba05622b8b143b0c95968ba59bddfbd6d2f2559",
                            "lessThan": "dc750422170a563c7a81f6e49d36bb02c62ae37f",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/dma/dmaengine.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.29",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.29",
                            "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": "6.18.54",
                            "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": "2.6.29",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "5.15.222"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.12.112"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "6.18.54"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "7.2.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ac8ce9f89638d6d79875cca7d8ae42566a9bde15"
                },
                {
                    "url": "https://git.kernel.org/stable/c/14578c78405d51fa92e4ada4502a45f537c0fcb8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cbb3310a5167e868a5e763e32b9a23b4d50669ee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8577a5ec4f7e00443015ef99f646def093121a1b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4448a539a0c39141cccc67be6cacde0f35024313"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fc1f4884f1d46fc7a8cee6e2997ecc9e8d1c7f77"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4aed7e47a10b94ea3c5171e8d1382081accd2e03"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dc750422170a563c7a81f6e49d36bb02c62ae37f"
                }
            ],
            "title": "dmaengine: wait for RCU readers before releasing dma_device",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}