{"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":"2026-06-01T16:15:46.922Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-01T16:15:46.922Z"},"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":{"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"}}],"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":"ae7e95638d956d556d74b9abb9e780d3bd3dcd9e","status":"affected","versionType":"git"},{"version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","lessThan":"1d7f07df450bac3301938fbc4251f2611be4084e","status":"affected","versionType":"git"},{"version":"5a1436beec5744029f3ac90b6fe71a698dcd6155","lessThan":"76641449b28979ebd6c02e9598367e119e385236","status":"affected","versionType":"git"},{"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":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","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":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.34","versionEndExcluding":"6.1.175"},{"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/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"}}}}