CVE-2021-47652

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But modelist\nhas not been initialized yet, so it will result in null-ptr-deref.\n\nInitialize modelist before calling fb_alloc_cmap() to fix this bug."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/video/fbdev/smscufx.c"], "versions": [{"version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "d1b6a1f0c23b7164250479bf92e2893291dca539", "status": "affected", "versionType": "git"}, {"version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "0fd28daec73525382e5c992db8743bf76e42cd5c", "status": "affected", "versionType": "git"}, {"version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4b", "status": "affected", "versionType": "git"}, {"version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "da8b269cc0a2526ebeaccbe2484c999eb0f822cf", "status": "affected", "versionType": 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"https://git.kernel.org/stable/c/c420b540db4b5d69de0a36d8b9d9a6a79a04f05a"}, {"url": "https://git.kernel.org/stable/c/d396c651e2b508b6179bb678cc029f3becbf5170"}, {"url": "https://git.kernel.org/stable/c/9280ef235b05e8f19f8bc6d547b992f0a0ef398d"}, {"url": "https://git.kernel.org/stable/c/1791f487f877a9e83d81c8677bd3e7b259e7cb27"}], "title": "video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2021-47652", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical 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{"title": "video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "d1b6a1f0c23b7164250479bf92e2893291dca539", "versionType": "git"}, {"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "0fd28daec73525382e5c992db8743bf76e42cd5c", "versionType": "git"}, {"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4b", "versionType": "git"}, {"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "da8b269cc0a2526ebeaccbe2484c999eb0f822cf", "versionType": "git"}, {"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "64ec3e678d76419f207b9cdd338dda438ca10b1c", "versionType": "git"}, {"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "c420b540db4b5d69de0a36d8b9d9a6a79a04f05a", "versionType": "git"}, {"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "d396c651e2b508b6179bb678cc029f3becbf5170", "versionType": "git"}, {"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "9280ef235b05e8f19f8bc6d547b992f0a0ef398d", "versionType": "git"}, {"status": "affected", "version": "3c8a63e22a0802fd56380f6ab305b419f18eb6f5", "lessThan": "1791f487f877a9e83d81c8677bd3e7b259e7cb27", "versionType": "git"}], "programFiles": ["drivers/video/fbdev/smscufx.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.2"}, {"status": "unaffected", "version": "0", "lessThan": "3.2", "versionType": "semver"}, {"status": "unaffected", "version": "4.9.311", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.276", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.238", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.189", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.110", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.33", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.16.19", "versionType": "semver", "lessThanOrEqual": "5.16.*"}, {"status": "unaffected", "version": "5.17.2", "versionType": "semver", "lessThanOrEqual": "5.17.*"}, {"status": "unaffected", "version": "5.18", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/video/fbdev/smscufx.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d1b6a1f0c23b7164250479bf92e2893291dca539"}, {"url": "https://git.kernel.org/stable/c/0fd28daec73525382e5c992db8743bf76e42cd5c"}, {"url": "https://git.kernel.org/stable/c/dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4b"}, {"url": "https://git.kernel.org/stable/c/da8b269cc0a2526ebeaccbe2484c999eb0f822cf"}, {"url": "https://git.kernel.org/stable/c/64ec3e678d76419f207b9cdd338dda438ca10b1c"}, {"url": "https://git.kernel.org/stable/c/c420b540db4b5d69de0a36d8b9d9a6a79a04f05a"}, {"url": "https://git.kernel.org/stable/c/d396c651e2b508b6179bb678cc029f3becbf5170"}, {"url": "https://git.kernel.org/stable/c/9280ef235b05e8f19f8bc6d547b992f0a0ef398d"}, {"url": "https://git.kernel.org/stable/c/1791f487f877a9e83d81c8677bd3e7b259e7cb27"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe()\n\nI got a null-ptr-deref report:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000000\n...\nRIP: 0010:fb_destroy_modelist+0x38/0x100\n...\nCall Trace:\n ufx_usb_probe.cold+0x2b5/0xac1 [smscufx]\n usb_probe_interface+0x1aa/0x3c0 [usbcore]\n really_probe+0x167/0x460\n...\n ret_from_fork+0x1f/0x30\n\nIf fb_alloc_cmap() fails in ufx_usb_probe(), fb_destroy_modelist() will\nbe called to destroy modelist in the error handling path. But modelist\nhas not been initialized yet, so it will result in null-ptr-deref.\n\nInitialize modelist before calling fb_alloc_cmap() to fix this bug."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.311", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.276", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.238", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.189", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.110", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.33", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.16.19", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.17.2", "versionStartIncluding": "3.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.18", "versionStartIncluding": "3.2"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:15:33.844Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47652", "state": "PUBLISHED", "dateUpdated": "2025-10-01T19:57:07.382Z", "dateReserved": "2025-02-26T01:48:21.520Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-02-26T01:54:18.089Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "91A60DD7-6C23-4025-B18F-3CE419A63086", "versionEndExcluding": "4.9.311", "versionStartIncluding": "3.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D9B028C-6313-47F9-94B7-5F8122345E49", "versionEndExcluding": "4.14.276", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FA28527A-11D3-41D2-9C4C-ECAC0D6A4A2D", "versionEndExcluding": "4.19.238", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8CB6E8F5-C2B1-46F3-A807-0F6104AC340F", "versionEndExcluding": "5.4.189", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "91D3BFD0-D3F3-4018-957C-96CCBF357D79", "versionEndExcluding": "5.10.110", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "27C42AE8-B387-43E2-938A-E1C8B40BE6D5", "versionEndExcluding": "5.15.33", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "20C43679-0439-405A-B97F-685BEE50613B", "versionEndExcluding": "5.16.19", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "210C679C-CF84-44A3-8939-E629C87E54BF", "versionEndExcluding": "5.17.2", "versionStartIncluding": "5.17", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe()\n\nI got a null-ptr-deref report:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000000\n...\nRIP: 0010:fb_destroy_modelist+0x38/0x100\n...\nCall Trace:\n ufx_usb_probe.cold+0x2b5/0xac1 [smscufx]\n usb_probe_interface+0x1aa/0x3c0 [usbcore]\n really_probe+0x167/0x460\n...\n ret_from_fork+0x1f/0x30\n\nIf fb_alloc_cmap() fails in ufx_usb_probe(), fb_destroy_modelist() will\nbe called to destroy modelist in the error handling path. But modelist\nhas not been initialized yet, so it will result in null-ptr-deref.\n\nInitialize modelist before calling fb_alloc_cmap() to fix this bug."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: video: fbdev: smscufx: Corregir null-ptr-deref en ufx_usb_probe() Recib\u00ed un informe de null-ptr-deref: ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000000 ... RIP: 0010:fb_destroy_modelist+0x38/0x100 ... Seguimiento de llamadas: ufx_usb_probe.cold+0x2b5/0xac1 [smscufx] usb_probe_interface+0x1aa/0x3c0 [usbcore] really_probe+0x167/0x460 ... ret_from_fork+0x1f/0x30 Si fb_alloc_cmap() falla en ufx_usb_probe(), fb_destroy_modelist() Se llamar\u00e1 a modelist para destruirlo en la ruta de manejo de errores. Pero modelist a\u00fan no se ha inicializado, por lo que dar\u00e1 como resultado null-ptr-deref. Inicialice modelist antes de llamar a fb_alloc_cmap() para corregir este error."}], "id": "CVE-2021-47652", "lastModified": "2026-06-17T04:18:15.043", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47652", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T19:50:21.892843Z", "version": "2.0.3"}}]}, "published": "2025-02-26T06:37:06.973", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0fd28daec73525382e5c992db8743bf76e42cd5c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1791f487f877a9e83d81c8677bd3e7b259e7cb27"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/64ec3e678d76419f207b9cdd338dda438ca10b1c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9280ef235b05e8f19f8bc6d547b992f0a0ef398d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c420b540db4b5d69de0a36d8b9d9a6a79a04f05a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d1b6a1f0c23b7164250479bf92e2893291dca539"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d396c651e2b508b6179bb678cc029f3becbf5170"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/da8b269cc0a2526ebeaccbe2484c999eb0f822cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe()", "id": "2347725", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347725"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nvideo: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe()\nI got a null-ptr-deref report:\nBUG: kernel NULL pointer dereference, address: 0000000000000000\n...\nRIP: 0010:fb_destroy_modelist+0x38/0x100\n...\nCall Trace:\nufx_usb_probe.cold+0x2b5/0xac1 [smscufx]\nusb_probe_interface+0x1aa/0x3c0 [usbcore]\nreally_probe+0x167/0x460\n...\nret_from_fork+0x1f/0x30\nIf fb_alloc_cmap() fails in ufx_usb_probe(), fb_destroy_modelist() will\nbe called to destroy modelist in the error handling path. But modelist\nhas not been initialized yet, so it will result in null-ptr-deref.\nInitialize modelist before calling fb_alloc_cmap() to fix this bug."], "name": "CVE-2021-47652", "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": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47652\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47652\nhttps://lore.kernel.org/linux-cve-announce/2025022649-CVE-2021-47652-65fa@gregkh/T"], "threat_severity": "Moderate"}

{}