{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50080",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-06-18T10:57:27.409Z",
        "datePublished": "2025-06-18T11:02:23.003Z",
        "dateUpdated": "2026-05-11T19:12:28.920Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:12:28.920Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: add overflow check in register_shm_helper()\n\nWith special lengths supplied by user space, register_shm_helper() has\nan integer overflow when calculating the number of pages covered by a\nsupplied user space memory region.\n\nThis causes internal_get_user_pages_fast() a helper function of\npin_user_pages_fast() to do a NULL pointer dereference:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010\n  Modules linked in:\n  CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11\n  Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015\n  pc : internal_get_user_pages_fast+0x474/0xa80\n  Call trace:\n   internal_get_user_pages_fast+0x474/0xa80\n   pin_user_pages_fast+0x24/0x4c\n   register_shm_helper+0x194/0x330\n   tee_shm_register_user_buf+0x78/0x120\n   tee_ioctl+0xd0/0x11a0\n   __arm64_sys_ioctl+0xa8/0xec\n   invoke_syscall+0x48/0x114\n\nFix this by adding an an explicit call to access_ok() in\ntee_shm_register_user_buf() to catch an invalid user space address\nearly."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tee/tee_shm.c"
                    ],
                    "versions": [
                        {
                            "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
                            "lessThan": "b37e0f17653c00b586cdbcdf0dbca475358ecffd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
                            "lessThan": "965333345fe952cc7eebc8e3a565ffc709441af2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
                            "lessThan": "578c349570d2a912401963783b36e0ec7a25c053",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
                            "lessThan": "c12f0e6126ad223806a365084e86370511654bf1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
                            "lessThan": "2f8e79a1a6128214cb9b205a9869341af5dfb16b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
                            "lessThan": "58c008d4d398f792ca67f35650610864725518fd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "033ddf12bcf5326b93bd604f50a7474a434a35f9",
                            "lessThan": "573ae4f13f630d6660008f1974c0a8a29c30e18a",
                            "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/tee/tee_shm.c"
                    ],
                    "versions": [
                        {
                            "version": "4.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.256",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.211",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.137",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.62",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18.19",
                            "lessThanOrEqual": "5.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19.3",
                            "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": "4.16",
                                    "versionEndExcluding": "4.19.256"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.16",
                                    "versionEndExcluding": "5.4.211"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.16",
                                    "versionEndExcluding": "5.10.137"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.16",
                                    "versionEndExcluding": "5.15.62"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.16",
                                    "versionEndExcluding": "5.18.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.16",
                                    "versionEndExcluding": "5.19.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.16",
                                    "versionEndExcluding": "6.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/b37e0f17653c00b586cdbcdf0dbca475358ecffd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/965333345fe952cc7eebc8e3a565ffc709441af2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/578c349570d2a912401963783b36e0ec7a25c053"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c12f0e6126ad223806a365084e86370511654bf1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2f8e79a1a6128214cb9b205a9869341af5dfb16b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/58c008d4d398f792ca67f35650610864725518fd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/573ae4f13f630d6660008f1974c0a8a29c30e18a"
                }
            ],
            "title": "tee: add overflow check in register_shm_helper()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
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    }
}