{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43493", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.013Z", "datePublished": "2026-05-19T10:44:25.402Z", "dateUpdated": "2026-05-19T10:44:25.402Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-19T10:44:25.402Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: pcrypt - Fix handling of MAY_BACKLOG requests\n\nMAY_BACKLOG requests can return EBUSY. Handle them by checking\nfor that value and filtering out EINPROGRESS notifications."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["crypto/pcrypt.c"], "versions": [{"version": "5a1436beec5744029f3ac90b6fe71a698dcd6155", "lessThan": "9f1cbca178c03188e201ed175251372149bb25f2", "status": "affected", "versionType": "git"}, {"version": "5a1436beec5744029f3ac90b6fe71a698dcd6155", "lessThan": "eb34e243df57e32f4c08fa191f3602ea19076276", "status": "affected", "versionType": "git"}, {"version": "5a1436beec5744029f3ac90b6fe71a698dcd6155", "lessThan": "77d55bc8675ee851ed639dc9be77325a8024cf67", "status": "affected", "versionType": "git"}, {"version": "5a1436beec5744029f3ac90b6fe71a698dcd6155", "lessThan": "46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a", "status": "affected", "versionType": "git"}, {"version": "5a1436beec5744029f3ac90b6fe71a698dcd6155", "lessThan": "915b692e6cb723aac658c25eb82c58fd81235110", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["crypto/pcrypt.c"], "versions": [{"version": "2.6.34", "status": "affected"}, {"version": "0", "lessThan": "2.6.34", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1-rc1", "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": "2.6.34", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.1-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2"}, {"url": "https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276"}, {"url": "https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67"}, {"url": "https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a"}, {"url": "https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110"}], "title": "crypto: pcrypt - Fix handling of MAY_BACKLOG requests", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: pcrypt - Fix handling of MAY_BACKLOG requests\n\nMAY_BACKLOG requests can return EBUSY. Handle them by checking\nfor that value and filtering out EINPROGRESS notifications."}], "id": "CVE-2026-43493", "lastModified": "2026-05-19T12:16:19.020", "metrics": {}, "published": "2026-05-19T12:16:19.020", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5a1436beec5744029f3ac90b6fe71a698dcd6155,9f1cbca178c03188e201ed175251372149bb25f2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5a1436beec5744029f3ac90b6fe71a698dcd6155,eb34e243df57e32f4c08fa191f3602ea19076276)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5a1436beec5744029f3ac90b6fe71a698dcd6155,77d55bc8675ee851ed639dc9be77325a8024cf67)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5a1436beec5744029f3ac90b6fe71a698dcd6155,46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5a1436beec5744029f3ac90b6fe71a698dcd6155,915b692e6cb723aac658c25eb82c58fd81235110)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.34"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.34)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.140,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.86,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.27,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.4,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-19T12:30:04.718927+00:00", "title": "Improper Handling of MAY_BACKLOG in Linux Crypto Leads to Service Interruption", "updated": "2026-05-19T13:00:06.147736+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-746"]}