{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50145",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-06-18T10:57:27.424Z",
        "datePublished": "2025-06-18T11:03:06.312Z",
        "dateUpdated": "2026-05-11T19:13:41.922Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:13:41.922Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: sf-pdma: Add multithread support for a DMA channel\n\nWhen we get a DMA channel and try to use it in multiple threads it\nwill cause oops and hanging the system.\n\n% echo 64 > /sys/module/dmatest/parameters/threads_per_chan\n% echo 10000 > /sys/module/dmatest/parameters/iterations\n% echo 1 > /sys/module/dmatest/parameters/run\n[   89.480664] Unable to handle kernel NULL pointer dereference at virtual\n               address 00000000000000a0\n[   89.488725] Oops [#1]\n[   89.494708] CPU: 2 PID: 1008 Comm: dma0chan0-copy0 Not tainted\n               5.17.0-rc5\n[   89.509385] epc : vchan_find_desc+0x32/0x46\n[   89.513553]  ra : sf_pdma_tx_status+0xca/0xd6\n\nThis happens because of data race. Each thread rewrite channels's\ndescriptor as soon as device_prep_dma_memcpy() is called. It leads to the\nsituation when the driver thinks that it uses right descriptor that\nactually is freed or substituted for other one.\n\nWith current fixes a descriptor changes its value only when it has\nbeen used. A new descriptor is acquired from vc->desc_issued queue that\nis already filled with descriptors that are ready to be sent. Threads\nhave no direct access to DMA channel descriptor. Now it is just possible\nto queue a descriptor for further processing."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/dma/sf-pdma/sf-pdma.c"
                    ],
                    "versions": [
                        {
                            "version": "6973886ad58e6b4988813331abb76ae0b364a9c2",
                            "lessThan": "b9b4992f897be9b0b9e3a3b956cab6b75ccc3f11",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6973886ad58e6b4988813331abb76ae0b364a9c2",
                            "lessThan": "5ab2782c944e324008ef5d658f2494a9f0e3c5ac",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6973886ad58e6b4988813331abb76ae0b364a9c2",
                            "lessThan": "4c7350b1dd8a192af844de32fc99b9e34c876fda",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6973886ad58e6b4988813331abb76ae0b364a9c2",
                            "lessThan": "a93b3f1e11971a91b6441b6d47488f4492cc113f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6973886ad58e6b4988813331abb76ae0b364a9c2",
                            "lessThan": "b2cc5c465c2cb8ab697c3fd6583c614e3f6cfbcc",
                            "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/sf-pdma/sf-pdma.c"
                    ],
                    "versions": [
                        {
                            "version": "5.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.137",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.61",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18.18",
                            "lessThanOrEqual": "5.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19.2",
                            "lessThanOrEqual": "5.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0",
                            "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": "5.5",
                                    "versionEndExcluding": "5.10.137"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "5.15.61"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "5.18.18"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "5.19.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b9b4992f897be9b0b9e3a3b956cab6b75ccc3f11"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5ab2782c944e324008ef5d658f2494a9f0e3c5ac"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4c7350b1dd8a192af844de32fc99b9e34c876fda"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a93b3f1e11971a91b6441b6d47488f4492cc113f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b2cc5c465c2cb8ab697c3fd6583c614e3f6cfbcc"
                }
            ],
            "title": "dmaengine: sf-pdma: Add multithread support for a DMA channel",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}