{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43061",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.981Z",
        "datePublished": "2026-05-05T15:17:27.079Z",
        "dateUpdated": "2026-05-23T16:06:10.956Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T16:06:10.956Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: Fix TX deadlock when using DMA\n\n`dmaengine_terminate_async` does not guarantee that the\n`__dma_tx_complete` callback will run. The callback is currently the\nonly place where `dma->tx_running` gets cleared. If the transaction is\ncanceled and the callback never runs, then `dma->tx_running` will never\nget cleared and we will never schedule new TX DMA transactions again.\n\nThis change makes it so we clear `dma->tx_running` after we terminate\nthe DMA transaction. This is \"safe\" because `serial8250_tx_dma_flush`\nis holding the UART port lock. The first thing the callback does is also\ngrab the UART port lock, so access to `dma->tx_running` is serialized."
                }
            ],
            "affected": [
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                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                        "drivers/tty/serial/8250/8250_dma.c"
                    ],
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                            "status": "affected",
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                            "versionType": "semver"
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                        {
                            "version": "5.15.179",
                            "lessThan": "5.15.203",
                            "status": "affected",
                            "versionType": "semver"
                        },
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                            "version": "6.1.129",
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                            "status": "affected",
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                        },
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                            "version": "6.12.16",
                            "lessThan": "6.12.78",
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                        },
                        {
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                            "status": "affected",
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                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/serial/8250/8250_dma.c"
                    ],
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                        },
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                            "status": "unaffected",
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                        },
                        {
                            "version": "6.18.20",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.10",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/8190f9ab6ad90cb97652adbebd238b874a4ef70d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/79a19bd936bb35f56ef0ccab1b3b59ebce8c762d"
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                    "url": "https://git.kernel.org/stable/c/d2719a0a9c3439abf67843a5504b7afccd9ded93"
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                {
                    "url": "https://git.kernel.org/stable/c/a424a34b8faddf97b5af41689087e7a230f79ba7"
                }
            ],
            "title": "serial: 8250: Fix TX deadlock when using DMA",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}