{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-46920", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-25T13:45:52.719Z", "datePublished": "2024-02-27T06:53:57.372Z", "dateUpdated": "2026-05-11T13:44:27.230Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:44:27.230Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback\n\nCurrent code blindly writes over the SWERR and the OVERFLOW bits. Write\nback the bits actually read instead so the driver avoids clobbering the\nOVERFLOW bit that comes after the register is read." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dma/idxd/irq.c" ], "versions": [ { "version": "bfe1d56091c1a404b3d4ce7e9809d745fc4453bb", "lessThan": "a5ad12d5d69c63af289a37f05187a0c6fe93553d", "status": "affected", "versionType": "git" }, { "version": "bfe1d56091c1a404b3d4ce7e9809d745fc4453bb", "lessThan": "02981a44a0e402089775416371bd2e0c935685f8", "status": "affected", "versionType": "git" }, { "version": "bfe1d56091c1a404b3d4ce7e9809d745fc4453bb", "lessThan": "ea941ac294d75d0ace50797aebf0056f6f8f7a7f", "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/dma/idxd/irq.c" ], "versions": [ { "version": "5.6", "status": "affected" }, { "version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.32", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.11.16", "lessThanOrEqual": "5.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.12", "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": "5.6", "versionEndExcluding": "5.10.32" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.11.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d" }, { "url": "https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8" }, { "url": "https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f" } ], "title": "dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "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:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-02-27T17:47:35.448029Z", "id": "CVE-2021-46920", "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": "2024-10-29T13:46:36.802Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:17:42.983Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f", "tags": [ "x_transferred" ] } ] } ] } }