{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50222",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-06-18T10:57:27.430Z",
        "datePublished": "2025-06-18T11:03:56.744Z",
        "dateUpdated": "2026-05-11T19:15:10.357Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:15:10.357Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: vt: initialize unicode screen buffer\n\nsyzbot reports kernel infoleak at vcs_read() [1], for buffer can be read\nimmediately after resize operation. Initialize buffer using kzalloc().\n\n  ----------\n  #include <fcntl.h>\n  #include <unistd.h>\n  #include <sys/ioctl.h>\n  #include <linux/fb.h>\n\n  int main(int argc, char *argv[])\n  {\n    struct fb_var_screeninfo var = { };\n    const int fb_fd = open(\"/dev/fb0\", 3);\n    ioctl(fb_fd, FBIOGET_VSCREENINFO, &var);\n    var.yres = 0x21;\n    ioctl(fb_fd, FBIOPUT_VSCREENINFO, &var);\n    return read(open(\"/dev/vcsu\", O_RDONLY), &var, sizeof(var)) == -1;\n  }\n  ----------"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/vt/vt.c"
                    ],
                    "versions": [
                        {
                            "version": "d8ae7242718738ee1bf9bfdd632d2a4b150fdd26",
                            "lessThan": "e02fa87e572bb7d90dcdbce9c0f519f1eb992e96",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d8ae7242718738ee1bf9bfdd632d2a4b150fdd26",
                            "lessThan": "cc9e874dace0c89ae535230c7da19b764746811e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d8ae7242718738ee1bf9bfdd632d2a4b150fdd26",
                            "lessThan": "5c6c65681f39bf71bc72ed589dec3b8b20e75cac",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d8ae7242718738ee1bf9bfdd632d2a4b150fdd26",
                            "lessThan": "446f123aa6021e5f75a20789f05ff3f7ae51a42f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d8ae7242718738ee1bf9bfdd632d2a4b150fdd26",
                            "lessThan": "777a462e1ae50a01fc4a871efa8e34d596a1e17d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d8ae7242718738ee1bf9bfdd632d2a4b150fdd26",
                            "lessThan": "e0ef23e9b0ad18b9fd3741b0f1ad2282e4a18def",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d8ae7242718738ee1bf9bfdd632d2a4b150fdd26",
                            "lessThan": "af77c56aa35325daa2bc2bed5c2ebf169be61b86",
                            "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/tty/vt/vt.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "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": "5.15.61",
                            "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": "4.19",
                                    "versionEndExcluding": "4.19.256"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.4.211"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.10.137"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.15.61"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.18.18"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.19.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e02fa87e572bb7d90dcdbce9c0f519f1eb992e96"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cc9e874dace0c89ae535230c7da19b764746811e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5c6c65681f39bf71bc72ed589dec3b8b20e75cac"
                },
                {
                    "url": "https://git.kernel.org/stable/c/446f123aa6021e5f75a20789f05ff3f7ae51a42f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/777a462e1ae50a01fc4a871efa8e34d596a1e17d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e0ef23e9b0ad18b9fd3741b0f1ad2282e4a18def"
                },
                {
                    "url": "https://git.kernel.org/stable/c/af77c56aa35325daa2bc2bed5c2ebf169be61b86"
                }
            ],
            "title": "tty: vt: initialize unicode screen buffer",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}