{"api_version":"1","generated_at":"2026-07-23T14:06:11+00:00","cve":"CVE-2026-43493","urls":{"html":"https://cve.report/CVE-2026-43493","api":"https://cve.report/api/cve/CVE-2026-43493.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43493","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43493"},"summary":{"title":"crypto: pcrypt - Fix handling of MAY_BACKLOG requests","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-19 12:16:19","updated_at":"2026-06-26 17:30:15"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67","name":"https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236","name":"https://git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e","name":"https://git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2","name":"https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110","name":"https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e","name":"https://git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276","name":"https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a","name":"https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43493","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43493","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 ae7e95638d956d556d74b9abb9e780d3bd3dcd9e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 1d7f07df450bac3301938fbc4251f2611be4084e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 76641449b28979ebd6c02e9598367e119e385236 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 9f1cbca178c03188e201ed175251372149bb25f2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 eb34e243df57e32f4c08fa191f3602ea19076276 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 77d55bc8675ee851ed639dc9be77325a8024cf67 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 915b692e6cb723aac658c25eb82c58fd81235110 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.34","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.34 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.258 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.140 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.86 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.27 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.4 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"43493","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"43493","cve":"CVE-2026-43493","epss":"0.000700000","percentile":"0.215780000","score_date":"2026-06-04","updated_at":"2026-06-05 00:02:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["crypto/pcrypt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ae7e95638d956d556d74b9abb9e780d3bd3dcd9e","status":"affected","version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","versionType":"git"},{"lessThan":"1d7f07df450bac3301938fbc4251f2611be4084e","status":"affected","version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","versionType":"git"},{"lessThan":"76641449b28979ebd6c02e9598367e119e385236","status":"affected","version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","versionType":"git"},{"lessThan":"9f1cbca178c03188e201ed175251372149bb25f2","status":"affected","version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","versionType":"git"},{"lessThan":"eb34e243df57e32f4c08fa191f3602ea19076276","status":"affected","version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","versionType":"git"},{"lessThan":"77d55bc8675ee851ed639dc9be77325a8024cf67","status":"affected","version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","versionType":"git"},{"lessThan":"46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a","status":"affected","version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","versionType":"git"},{"lessThan":"915b692e6cb723aac658c25eb82c58fd81235110","status":"affected","version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["crypto/pcrypt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.34"},{"lessThan":"2.6.34","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.86","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"2.6.34","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"2.6.34","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"2.6.34","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.140","versionStartIncluding":"2.6.34","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.86","versionStartIncluding":"2.6.34","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.27","versionStartIncluding":"2.6.34","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"2.6.34","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"2.6.34","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"metrics":[{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-06-14T17:45:17.419Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e"},{"url":"https://git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e"},{"url":"https://git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236"},{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43493","datePublished":"2026-05-19T10:44:25.402Z","dateReserved":"2026-05-01T14:12:56.013Z","dateUpdated":"2026-06-14T17:45:17.419Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-19 12:16:19","lastModifiedDate":"2026-06-26 17:30:15","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"5.10.258","matchCriteriaId":"B07D4ABF-AED6-4ADB-A7DE-7A990429D41B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.209","matchCriteriaId":"919C10A9-7951-4A74-BADD-C135A0A8D8B4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.175","matchCriteriaId":"92385813-D91D-480D-83A1-F423D2CBB2BA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.140","matchCriteriaId":"A1A92866-F406-43B5-B2D1-CFC274753E9D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.86","matchCriteriaId":"55DA1C62-9991-451E-B8A8-E0004E00F789"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.27","matchCriteriaId":"A10AC84F-C058-47D5-85B4-E6E51A613B74"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0.4","matchCriteriaId":"CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43493","Ordinal":"1","Title":"crypto: pcrypt - Fix handling of MAY_BACKLOG requests","CVE":"CVE-2026-43493","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43493","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"crypto: pcrypt - Fix handling of MAY_BACKLOG requests"}]}}}