{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-72142",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-09T03:40:39.908Z",
        "datePublished": "2026-08-15T05:53:15.489Z",
        "dateUpdated": "2026-08-23T12:46:51.665Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-23T12:46:51.665Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: imx: fix locked bus on SMBus block-read of 0 (atomic)\n\nSMBus 3.1 6.5.7 allows a Block Read byte count of 0, but the atomic\n(polling) path rejects it as -EPROTO. Worse, it returns without a\nNACK+STOP: the next receive cycle has already started, so the target\nkeeps holding SDA and the bus stays stuck until a power cycle for\nthis i2c controller.\n\nReading I2DR to obtain the count likewise arms the next byte on the\ncount > I2C_SMBUS_BLOCK_MAX path, which also returned -EPROTO directly\nand left the bus held.\n\nHandle both: NACK the in-flight dummy byte (TXAK) and extend msgs->len so\nthe existing last-byte handling emits STOP; the dummy byte is discarded.\nA count of 0 is a valid empty block read; a count above\nI2C_SMBUS_BLOCK_MAX is still reported as -EPROTO, but only after the bus\nhas been released.\n\nThe interrupt-driven path has the same flaw from a later commit and is\nfixed separately, as it carries a different Fixes: tag and stable range."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/i2c/busses/i2c-imx.c"
                    ],
                    "versions": [
                        {
                            "version": "8e8782c71595a5ad29e234ce6b3d2fce787fb07a",
                            "lessThan": "0f29df3c3d607a9dbc14aed0e45504ced4d2e7ec",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e8782c71595a5ad29e234ce6b3d2fce787fb07a",
                            "lessThan": "38d4947431b2410850409fda016b2ac9f640a4dd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e8782c71595a5ad29e234ce6b3d2fce787fb07a",
                            "lessThan": "e3e8b02d4773cfc5ad561d2e5505efde36c6927a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e8782c71595a5ad29e234ce6b3d2fce787fb07a",
                            "lessThan": "016ef0f6ca4bc9bf0330ac41bd2ea349759643e3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e8782c71595a5ad29e234ce6b3d2fce787fb07a",
                            "lessThan": "c882e8cc68fb993700dc21fd6e754001e6297934",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e8782c71595a5ad29e234ce6b3d2fce787fb07a",
                            "lessThan": "6d2c973926d0612360693bc559be2ffde836151b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e8782c71595a5ad29e234ce6b3d2fce787fb07a",
                            "lessThan": "60ed00d46616a9232e42ea7a3e3c0273d7cf7543",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e8782c71595a5ad29e234ce6b3d2fce787fb07a",
                            "lessThan": "cb2fc37857693b55909fb77dc2c87cfbc1cdc476",
                            "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/i2c/busses/i2c-imx.c"
                    ],
                    "versions": [
                        {
                            "version": "3.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.266",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.217",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.184",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.148",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "3.16",
                                    "versionEndExcluding": "5.10.266"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.16",
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                                },
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0f29df3c3d607a9dbc14aed0e45504ced4d2e7ec"
                },
                {
                    "url": "https://git.kernel.org/stable/c/38d4947431b2410850409fda016b2ac9f640a4dd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e3e8b02d4773cfc5ad561d2e5505efde36c6927a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/016ef0f6ca4bc9bf0330ac41bd2ea349759643e3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c882e8cc68fb993700dc21fd6e754001e6297934"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6d2c973926d0612360693bc559be2ffde836151b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/60ed00d46616a9232e42ea7a3e3c0273d7cf7543"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cb2fc37857693b55909fb77dc2c87cfbc1cdc476"
                }
            ],
            "title": "i2c: imx: fix locked bus on SMBus block-read of 0 (atomic)",
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}