{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47631", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:48:21.518Z", "datePublished": "2025-02-26T01:54:07.513Z", "dateUpdated": "2026-05-11T13:58:07.851Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:58:07.851Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nARM: davinci: da850-evm: Avoid NULL pointer dereference\n\nWith newer versions of GCC, there is a panic in da850_evm_config_emac()\nwhen booting multi_v5_defconfig in QEMU under the palmetto-bmc machine:\n\nUnable to handle kernel NULL pointer dereference at virtual address 00000020\npgd = (ptrval)\n[00000020] *pgd=00000000\nInternal error: Oops: 5 [#1] PREEMPT ARM\nModules linked in:\nCPU: 0 PID: 1 Comm: swapper Not tainted 5.15.0 #1\nHardware name: Generic DT based system\nPC is at da850_evm_config_emac+0x1c/0x120\nLR is at do_one_initcall+0x50/0x1e0\n\nThe emac_pdata pointer in soc_info is NULL because davinci_soc_info only\ngets populated on davinci machines but da850_evm_config_emac() is called\non all machines via device_initcall().\n\nMove the rmii_en assignment below the machine check so that it is only\ndereferenced when running on a supported SoC." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm/mach-davinci/board-da850-evm.c" ], "versions": [ { "version": "bae105879f2f2404155da6f50b3636193d228a62", "lessThan": "c06f476e5b74bcabb8c4a2fba55864a37e62843b", "status": "affected", "versionType": "git" }, { "version": "bae105879f2f2404155da6f50b3636193d228a62", "lessThan": "a12b356d45cbb6e8a1b718d1436b3d6239a862f3", "status": "affected", "versionType": "git" }, { "version": "bae105879f2f2404155da6f50b3636193d228a62", "lessThan": "c64e2ed5cc376e137e572babfd2edc38b2cfb61b", "status": "affected", "versionType": "git" }, { "version": "bae105879f2f2404155da6f50b3636193d228a62", "lessThan": "89931d4762572aaee6edbe5673d41f8082de110f", "status": "affected", "versionType": "git" }, { "version": "bae105879f2f2404155da6f50b3636193d228a62", "lessThan": "0a312ec66a03133d28570f07bc52749ccfef54da", "status": "affected", "versionType": "git" }, { "version": "bae105879f2f2404155da6f50b3636193d228a62", "lessThan": "0940795c6834fbe7705acc5c3d4b2f7a5f67527a", "status": "affected", "versionType": "git" }, { "version": "bae105879f2f2404155da6f50b3636193d228a62", "lessThan": "c5628533a3ece64235d04fe11ec44d2be99e423d", "status": "affected", "versionType": "git" }, { "version": "bae105879f2f2404155da6f50b3636193d228a62", "lessThan": "83a1cde5c74bfb44b49cb2a940d044bb2380f4ea", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm/mach-davinci/board-da850-evm.c" ], "versions": [ { "version": "2.6.33", "status": "affected" }, { "version": "0", "lessThan": "2.6.33", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.311", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.276", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.239", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.190", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.112", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.35", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.4", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18", "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": "2.6.33", "versionEndExcluding": "4.9.311" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "4.14.276" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "4.19.239" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.4.190" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.10.112" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.15.35" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.17.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.18" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c06f476e5b74bcabb8c4a2fba55864a37e62843b" }, { "url": "https://git.kernel.org/stable/c/a12b356d45cbb6e8a1b718d1436b3d6239a862f3" }, { "url": "https://git.kernel.org/stable/c/c64e2ed5cc376e137e572babfd2edc38b2cfb61b" }, { "url": "https://git.kernel.org/stable/c/89931d4762572aaee6edbe5673d41f8082de110f" }, { "url": "https://git.kernel.org/stable/c/0a312ec66a03133d28570f07bc52749ccfef54da" }, { "url": "https://git.kernel.org/stable/c/0940795c6834fbe7705acc5c3d4b2f7a5f67527a" }, { "url": "https://git.kernel.org/stable/c/c5628533a3ece64235d04fe11ec44d2be99e423d" }, { "url": "https://git.kernel.org/stable/c/83a1cde5c74bfb44b49cb2a940d044bb2380f4ea" } ], "title": "ARM: davinci: da850-evm: Avoid NULL pointer dereference", "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-2021-47631", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T19:51:01.274417Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:57:09.062Z" } } ] } }