{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50101",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-06-18T10:57:27.412Z",
        "datePublished": "2025-06-18T11:02:37.297Z",
        "dateUpdated": "2026-05-11T19:12:51.149Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:12:51.149Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: vt8623fb: Check the size of screen before memset_io()\n\nIn the function vt8623fb_set_par(), the value of 'screen_size' is\ncalculated by the user input. If the user provides the improper value,\nthe value of 'screen_size' may larger than 'info->screen_size', which\nmay cause the following bug:\n\n[  583.339036] BUG: unable to handle page fault for address: ffffc90005000000\n[  583.339049] #PF: supervisor write access in kernel mode\n[  583.339052] #PF: error_code(0x0002) - not-present page\n[  583.339074] RIP: 0010:memset_orig+0x33/0xb0\n[  583.339110] Call Trace:\n[  583.339118]  vt8623fb_set_par+0x11cd/0x21e0\n[  583.339146]  fb_set_var+0x604/0xeb0\n[  583.339181]  do_fb_ioctl+0x234/0x670\n[  583.339209]  fb_ioctl+0xdd/0x130\n\nFix the this by checking the value of 'screen_size' before memset_io()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/video/fbdev/vt8623fb.c"
                    ],
                    "versions": [
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                            "lessThan": "73280a184aa2e1a625ce54ce761042955cc79cd0",
                            "status": "affected",
                            "versionType": "git"
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                            "lessThan": "52ad9bfeb8a0e62de30de6d39e8a49a72dd78150",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "558b7bd86c32978648cda5deb5c758d77ef0c165",
                            "lessThan": "d71528ccdc7ae8d7500d414091d27805c51407a2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "558b7bd86c32978648cda5deb5c758d77ef0c165",
                            "lessThan": "bd8269e57621e5b38cc0b4bd2fa02e85c9f2a441",
                            "status": "affected",
                            "versionType": "git"
                        },
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                            "lessThan": "4a3cef1eaced13ba9b55381d46bfad937a3dac2c",
                            "status": "affected",
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                        },
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                            "version": "558b7bd86c32978648cda5deb5c758d77ef0c165",
                            "lessThan": "b17caec5127bba6f90af92bcc85871df54548ac0",
                            "status": "affected",
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                        },
                        {
                            "version": "558b7bd86c32978648cda5deb5c758d77ef0c165",
                            "lessThan": "c7a3f41e4b133d4dd25bc996b69039b19a34d69d",
                            "status": "affected",
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                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/video/fbdev/vt8623fb.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.22",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.22",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.291",
                            "lessThanOrEqual": "4.14.*",
                            "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": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.22",
                                    "versionEndExcluding": "4.14.291"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.22",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/73280a184aa2e1a625ce54ce761042955cc79cd0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/52ad9bfeb8a0e62de30de6d39e8a49a72dd78150"
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                    "url": "https://git.kernel.org/stable/c/d71528ccdc7ae8d7500d414091d27805c51407a2"
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                    "url": "https://git.kernel.org/stable/c/4a3cef1eaced13ba9b55381d46bfad937a3dac2c"
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                {
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                    "url": "https://git.kernel.org/stable/c/c7a3f41e4b133d4dd25bc996b69039b19a34d69d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ec0754c60217248fa77cc9005d66b2b55200ac06"
                }
            ],
            "title": "video: fbdev: vt8623fb: Check the size of screen before memset_io()",
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}