{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64270",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.775Z",
        "datePublished": "2026-07-25T08:49:17.541Z",
        "dateUpdated": "2026-08-23T12:45:36.926Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-23T12:45:36.926Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: mms114 - reject an oversized device packet size\n\nmms114_interrupt() reads a packet of touch data from the device into a\nfixed-size on-stack buffer\n\n\tstruct mms114_touch touch[MMS114_MAX_TOUCH];\n\nwhich holds MMS114_MAX_TOUCH (10) events of MMS114_EVENT_SIZE (8) bytes,\ni.e. 80 bytes. The length of the I2C read into it is taken verbatim from\nthe device:\n\n\tpacket_size = mms114_read_reg(data, MMS114_PACKET_SIZE);\n\tif (packet_size <= 0)\n\t\tgoto out;\n\t...\n\terror = __mms114_read_reg(data, MMS114_INFORMATION, packet_size,\n\t\t\t(u8 *)touch);\n\npacket_size is a single device register byte (0x0F) and the only check\nis the lower bound packet_size <= 0; it is never bounded against the\nsize of touch[]. A malfunctioning, malicious or counterfeit controller\n(or an attacker tampering with the I2C bus) can report a packet_size of\nup to 255, so __mms114_read_reg() writes up to 175 bytes past the end of\ntouch[] on the IRQ-thread stack: a stack out-of-bounds write that can\noverwrite the stack canary, saved registers and the return address.\n\nA well-formed device never reports more than the buffer holds, so reject\nan oversized packet and drop the report, consistent with the handler's\nother error paths, rather than reading past the buffer."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/input/touchscreen/mms114.c"
                    ],
                    "versions": [
                        {
                            "version": "07b8481d4aff73d6f451f25e74ea10240ff5131e",
                            "lessThan": "040843281eebfa110d08fd7fb083fe6cb55cea14",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07b8481d4aff73d6f451f25e74ea10240ff5131e",
                            "lessThan": "39b12daf1adb80f9595fdfe584961deb80860cbb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07b8481d4aff73d6f451f25e74ea10240ff5131e",
                            "lessThan": "d99ba93c35ff2d5276e9c2632967481bd53a79d0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07b8481d4aff73d6f451f25e74ea10240ff5131e",
                            "lessThan": "5d2ea15ba03bf17ed143ff1a0995a4206edc3fb6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07b8481d4aff73d6f451f25e74ea10240ff5131e",
                            "lessThan": "b78150729762d47c14fe29a2582bdca5568e62b8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07b8481d4aff73d6f451f25e74ea10240ff5131e",
                            "lessThan": "8301c335305344d4da4ab9442b6a399dacfe5b8d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07b8481d4aff73d6f451f25e74ea10240ff5131e",
                            "lessThan": "f3d5e77b27fded71dcb97f409262bf0abba0410e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "07b8481d4aff73d6f451f25e74ea10240ff5131e",
                            "lessThan": "66725039f7090afe14c31bd259e2059a68f04023",
                            "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/input/touchscreen/mms114.c"
                    ],
                    "versions": [
                        {
                            "version": "3.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.6",
                            "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": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "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": "3.6",
                                    "versionEndExcluding": "5.10.266"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.6",
                                    "versionEndExcluding": "5.15.217"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.6",
                                    "versionEndExcluding": "6.1.184"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.6",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.6",
                                    "versionEndExcluding": "6.12.96"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.6",
                                    "versionEndExcluding": "6.18.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.6",
                                    "versionEndExcluding": "7.1.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.6",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/040843281eebfa110d08fd7fb083fe6cb55cea14"
                },
                {
                    "url": "https://git.kernel.org/stable/c/39b12daf1adb80f9595fdfe584961deb80860cbb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d99ba93c35ff2d5276e9c2632967481bd53a79d0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5d2ea15ba03bf17ed143ff1a0995a4206edc3fb6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b78150729762d47c14fe29a2582bdca5568e62b8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8301c335305344d4da4ab9442b6a399dacfe5b8d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f3d5e77b27fded71dcb97f409262bf0abba0410e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/66725039f7090afe14c31bd259e2059a68f04023"
                }
            ],
            "title": "Input: mms114 - reject an oversized device packet size",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}