{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47567", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-24T15:11:00.728Z", "datePublished": "2024-05-24T15:12:54.081Z", "dateUpdated": "2026-05-23T15:20:15.825Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:20:15.825Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/32: Fix hardlockup on vmap stack overflow\n\nSince the commit c118c7303ad5 (\"powerpc/32: Fix vmap stack - Do not\nactivate MMU before reading task struct\") a vmap stack overflow\nresults in a hard lockup. This is because emergency_ctx is still\naddressed with its virtual address allthough data MMU is not active\nanymore at that time.\n\nFix it by using a physical address instead." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/powerpc/kernel/head_32.h" ], "versions": [ { "version": "c118c7303ad528be8ff2aea8cd1ee15452c763f0", "lessThan": "dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7", "status": "affected", "versionType": "git" }, { "version": "c118c7303ad528be8ff2aea8cd1ee15452c763f0", "lessThan": "c4e3ff8b8b1d54f0c755670174c453b06e17114b", "status": "affected", "versionType": "git" }, { "version": "c118c7303ad528be8ff2aea8cd1ee15452c763f0", "lessThan": "5bb60ea611db1e04814426ed4bd1c95d1487678e", "status": "affected", "versionType": "git" }, { "version": "3b234b4a6651ed6bdca94553aa0038fc7ded9271", "status": "affected", "versionType": "git" }, { "version": "5.9.5", "lessThan": "5.10", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/powerpc/kernel/head_32.h" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.83", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.6", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.16", "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": "5.10", "versionEndExcluding": "5.10.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7" }, { "url": "https://git.kernel.org/stable/c/c4e3ff8b8b1d54f0c755670174c453b06e17114b" }, { "url": "https://git.kernel.org/stable/c/5bb60ea611db1e04814426ed4bd1c95d1487678e" } ], "title": "powerpc/32: Fix hardlockup on vmap stack overflow", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-17T17:34:28.307539Z", "id": "CVE-2021-47567", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-17T17:34:41.747Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.830Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/c4e3ff8b8b1d54f0c755670174c453b06e17114b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/5bb60ea611db1e04814426ed4bd1c95d1487678e", "tags": [ "x_transferred" ] } ] } ] } }