CVE-2022-50097

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-50097", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-06-18T10:57:27.411Z", "datePublished": "2025-06-18T11:02:34.589Z", "dateUpdated": "2026-08-05T08:57:23.864Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:57:23.864Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: s3fb: Check the size of screen before memset_io()\n\nIn the function s3fb_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[ 54.083733] BUG: unable to handle page fault for address: ffffc90003000000\n[ 54.083742] #PF: supervisor write access in kernel mode\n[ 54.083744] #PF: error_code(0x0002) - not-present page\n[ 54.083760] RIP: 0010:memset_orig+0x33/0xb0\n[ 54.083782] Call Trace:\n[ 54.083788] s3fb_set_par+0x1ec6/0x4040\n[ 54.083806] fb_set_var+0x604/0xeb0\n[ 54.083836] do_fb_ioctl+0x234/0x670\n\nFix the this by checking the value of 'screen_size' before memset_io()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is triggered through the local fbdev ioctl path (open /dev/fbN, FBIOPUT_VSCREENINFO \u2192 do_fb_ioctl \u2192 fb_set_var \u2192 s3fb_set_par), not via network or adjacent protocols.\nAC:L - An attacker who can issue FBIOPUT_VSCREENINFO reliably controls xres_virtual/yres_virtual/bits_per_pixel to bypass s3fb_check_var (signed int mem overflow or bpp==0 text mode) and force an oversized memset_io; no race or external conditions are required.\nPR:L - There is no CAP_SYS_ADMIN check on FBIOPUT_VSCREENINFO; access is only gated by /dev/fbN DAC permissions (typically root:video 0660), so an unprivileged video-group user can reach the vulnerable code.\nUI:N - Exploitation requires only the attacker's own open/ioctl against the framebuffer device; no separate victim action is needed.\nS:U - This is a standard in-kernel driver memory-safety bug affecting the host kernel/device; it does not cross a VM, IOMMU, or other security authority boundary.\nC:N - The corruption is a memset_io of fixed zeros into the PCI framebuffer aperture (and past it into unmapped ioremap space); there is no out-of-bounds read or other information-disclosure primitive.\nI:H - User-controlled dimensions cause an out-of-bounds write via memset_io beyond info->screen_size into the mapped BAR (and beyond), which is kernel-mediated memory corruption of framebuffer/MMIO space.\nA:H - The demonstrated result is a kernel page-fault oops in memset when the write runs past the ioremap'd region, which can panic or otherwise take down the system."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/video/fbdev/s3fb.c"], "versions": [{"version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "lessThan": "574912261528589012b61f82d368256247c3a5a8", "status": "affected", "versionType": "git"}, {"version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "lessThan": "3c35a0dc2b4e7acf24c796043b64fa3eee799239", "status": "affected", "versionType": "git"}, {"version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "lessThan": "eacb50f1733660911827d7c3720f4c5425d0cdda", "status": "affected", "versionType": "git"}, {"version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "lessThan": "5e0da18956d38e7106664dc1d06367b22f06edd3", "status": "affected", "versionType": "git"}, {"version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "lessThan": "ce50d94afcb8690813c5522f24cd38737657db81", "status": "affected", "versionType": "git"}, {"version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "lessThan": "52461d387cc8c8f8dc40320caa2e9e101f73e7ba", "status": "affected", "versionType": "git"}, {"version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "lessThan": "e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0", "status": "affected", "versionType": "git"}, {"version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "lessThan": "6ba592fa014f21f35a8ee8da4ca7b95a018f13e8", "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/video/fbdev/s3fb.c"], "versions": [{"version": "2.6.21", "status": "affected"}, {"version": "0", "lessThan": "2.6.21", "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": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "4.14.291"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "4.19.256"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "5.4.211"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "5.10.137"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "5.15.61"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "5.18.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "5.19.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.21", "versionEndExcluding": "6.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8"}, {"url": "https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239"}, {"url": "https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda"}, {"url": "https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3"}, {"url": "https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81"}, {"url": "https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba"}, {"url": "https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0"}, {"url": "https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8"}], "title": "video: fbdev: s3fb: Check the size of screen before memset_io()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/video/fbdev/s3fb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "574912261528589012b61f82d368256247c3a5a8", "status": "affected", "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "versionType": "git"}, {"lessThan": "3c35a0dc2b4e7acf24c796043b64fa3eee799239", "status": "affected", "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "versionType": "git"}, {"lessThan": "eacb50f1733660911827d7c3720f4c5425d0cdda", "status": "affected", "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "versionType": "git"}, {"lessThan": "5e0da18956d38e7106664dc1d06367b22f06edd3", "status": "affected", "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "versionType": "git"}, {"lessThan": "ce50d94afcb8690813c5522f24cd38737657db81", "status": "affected", "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "versionType": "git"}, {"lessThan": "52461d387cc8c8f8dc40320caa2e9e101f73e7ba", "status": "affected", "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "versionType": "git"}, {"lessThan": "e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0", "status": "affected", "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "versionType": "git"}, {"lessThan": "6ba592fa014f21f35a8ee8da4ca7b95a018f13e8", "status": "affected", "version": "a268422de8bf1b4c0cb97987b6c329c9f6a3da4b", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/video/fbdev/s3fb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.21"}, {"lessThan": "2.6.21", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.291", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.256", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.211", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.137", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.61", "versionType": "semver"}, {"lessThanOrEqual": "5.18.*", "status": "unaffected", "version": "5.18.18", "versionType": "semver"}, {"lessThanOrEqual": "5.19.*", "status": "unaffected", "version": "5.19.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2D3E44AA-2EE9-4B49-A665-78A1AF3F3059", "versionEndExcluding": "4.14.291", "versionStartIncluding": "2.6.21", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6C47CDE3-B039-4AE5-B8E4-1DC820E473FF", "versionEndExcluding": "4.19.256", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B1C63D19-C08C-4308-A848-B2523C9275BD", "versionEndExcluding": "5.4.211", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C2BF720F-C5EE-4DE2-9BDF-CE4CFBC767F4", "versionEndExcluding": "5.10.137", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "51861563-7F40-460F-82CD-2D3FBDAD6618", "versionEndExcluding": "5.15.61", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5B42E453-8837-49D0-A5EF-03F818A6DC11", "versionEndExcluding": "5.18.18", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A1A2A5A5-4598-4D7E-BA07-4660398D6C8F", "versionEndExcluding": "5.19.2", "versionStartIncluding": "5.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: s3fb: Check the size of screen before memset_io()\n\nIn the function s3fb_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[ 54.083733] BUG: unable to handle page fault for address: ffffc90003000000\n[ 54.083742] #PF: supervisor write access in kernel mode\n[ 54.083744] #PF: error_code(0x0002) - not-present page\n[ 54.083760] RIP: 0010:memset_orig+0x33/0xb0\n[ 54.083782] Call Trace:\n[ 54.083788] s3fb_set_par+0x1ec6/0x4040\n[ 54.083806] fb_set_var+0x604/0xeb0\n[ 54.083836] do_fb_ioctl+0x234/0x670\n\nFix the this by checking the value of 'screen_size' before memset_io()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: video: fbdev: s3fb: Verifique el tama\u00f1o de la pantalla antes de memset_io() En la funci\u00f3n s3fb_set_par(), el valor de 'screen_size' se calcula mediante la entrada del usuario. Si el usuario proporciona un valor incorrecto, el valor de 'screen_size' puede ser mayor que 'info->screen_size', lo que puede causar el siguiente error: [ 54.083733] ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: ffffc90003000000 [ 54.083742] #PF: acceso de escritura del supervisor en modo kernel [ 54.083744] #PF: error_code(0x0002) - p\u00e1gina no presente [ 54.083760] RIP: 0010:memset_orig+0x33/0xb0 [ 54.083782] Rastreo de llamadas: [ 54.083788] s3fb_set_par+0x1ec6/0x4040 [ 54.083806] fb_set_var+0x604/0xeb0 [ 54.083836] do_fb_ioctl+0x234/0x670 Solucione este problema comprobando el valor de 'screen_size' antes de memset_io()."}], "id": "CVE-2022-50097", "lastModified": "2026-08-04T10:18:04.907", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-06-18T11:15:38.963", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: video: fbdev: s3fb: Check the size of screen before memset_io()", "id": "2373448", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373448"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nvideo: fbdev: s3fb: Check the size of screen before memset_io()\nIn the function s3fb_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[ 54.083733] BUG: unable to handle page fault for address: ffffc90003000000\n[ 54.083742] #PF: supervisor write access in kernel mode\n[ 54.083744] #PF: error_code(0x0002) - not-present page\n[ 54.083760] RIP: 0010:memset_orig+0x33/0xb0\n[ 54.083782] Call Trace:\n[ 54.083788] s3fb_set_par+0x1ec6/0x4040\n[ 54.083806] fb_set_var+0x604/0xeb0\n[ 54.083836] do_fb_ioctl+0x234/0x670\nFix the this by checking the value of 'screen_size' before memset_io()."], "name": "CVE-2022-50097", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50097\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50097\nhttps://lore.kernel.org/linux-cve-announce/2025061802-CVE-2022-50097-c63f@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-06-23T08:36:33.832616+00:00", "updated": "2025-06-23T08:36:33.832665+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}