{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-46326",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.112Z",
        "datePublished": "2026-06-09T12:25:53.893Z",
        "dateUpdated": "2026-08-05T12:31:21.635Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:31:21.635Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: pressure: mprls0025pa: fix spi_transfer struct initialisation\n\nMake sure that the spi_transfer struct is zeroed out before use."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 8.4,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - The bug is reached only through local kernel interfaces (IIO sysfs reads or buffered IIO character-device access) that invoke mpr_spi_xfer(); there is no network-facing or pre-auth remote code path to this driver.\nAC:L - On any system with the SPI driver bound to a Honeywell MPR sensor, an attacker can trigger the uninitialized spi_transfer on every pressure read with a simple, repeatable sysfs access; no race or attacker-uncontrollable memory layout is required.\nPR:N - IIO in_pressure_raw sysfs attributes are world-readable (0444), so any local unprivileged user can invoke the vulnerable SPI transfer without capabilities or namespace elevation.\nUI:N - Exploitation requires only the attacker reading the sensor sysfs node; no victim interaction such as plugging hardware or mounting filesystems is needed.\nS:U - Impact is confined to kernel memory and SPI subsystem state on the same host; it does not cross a VM, container, or IOMMU security boundary.\nC:H - Stack garbage in spi_transfer fields (especially transfer_list and DMA mapping flags) corrupts SPI core linked lists and mapping state, enabling arbitrary kernel memory reads during exploitation of the resulting corruption primitive.\nI:H - The same uninitialized fields produce out-of-bounds linked-list manipulation and potential erroneous DMA unmap operations, which are classic kernel memory-corruption primitives that can be leveraged for arbitrary write and code execution.\nA:H - Corrupting spi_message transfer lists or SPI/DMA teardown paths can cause immediate kernel oops/panic or sustained denial of service via malformed CS/delay handling on the SPI bus."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iio/pressure/mprls0025pa_spi.c"
                    ],
                    "versions": [
                        {
                            "version": "a0858f0cd28e822b91376ae288d5548bc1847531",
                            "lessThan": "72158f9ae29a9e56d0f9704ce461a866feaf9925",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a0858f0cd28e822b91376ae288d5548bc1847531",
                            "lessThan": "664ffdf34c01810085e4d85508b361c3fdd2ab40",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a0858f0cd28e822b91376ae288d5548bc1847531",
                            "lessThan": "9080c7ac30f5f8f8fcb7b27b56df60fea7909c21",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a0858f0cd28e822b91376ae288d5548bc1847531",
                            "lessThan": "1e0ac56c92e26115cbc8cfc639843725cb3a7d6a",
                            "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/iio/pressure/mprls0025pa_spi.c"
                    ],
                    "versions": [
                        {
                            "version": "6.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.14",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.4",
                            "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": "6.9",
                                    "versionEndExcluding": "6.12.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.18.14"
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                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.19.4"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "7.0"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/72158f9ae29a9e56d0f9704ce461a866feaf9925"
                },
                {
                    "url": "https://git.kernel.org/stable/c/664ffdf34c01810085e4d85508b361c3fdd2ab40"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9080c7ac30f5f8f8fcb7b27b56df60fea7909c21"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1e0ac56c92e26115cbc8cfc639843725cb3a7d6a"
                }
            ],
            "title": "iio: pressure: mprls0025pa: fix spi_transfer struct initialisation",
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}