{"id":"CVE-2026-43493","revision":"8befb2799124447884297ab84bc60751","records":[{"revision":"8befb2799124447884297ab84bc60751","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43493","aliases":[],"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":0,"publishedAt":"2026-05-19T10:44:25.402+00:00","modifiedAt":"2026-10-19T19:26:37.7+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"crypto/pcrypt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5a1436beec5744029f3ac90b6fe71a698dcd6155\",\n                            \"lessThan\": \"ae7e95638d956d556d74b9abb9e780d3bd3dcd9e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a1436beec5744029f3ac90b6fe71a698dcd6155\",\n                            \"lessThan\": \"1d7f07df450bac3301938fbc4251f2611be4084e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a1436beec5744029f3ac90b6fe71a698dcd6155\",\n                            \"lessThan\": \"76641449b28979ebd6c02e9598367e119e385236\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a1436beec5744029f3ac90b6fe71a698dcd6155\",\n                            \"lessThan\": \"9f1cbca178c03188e201ed175251372149bb25f2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a1436beec5744029f3ac90b6fe71a698dcd6155\",\n                            \"lessThan\": \"eb34e243df57e32f4c08fa191f3602ea19076276\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a1436beec5744029f3ac90b6fe71a698dcd6155\",\n                            \"lessThan\": \"77d55bc8675ee851ed639dc9be77325a8024cf67\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a1436beec5744029f3ac90b6fe71a698dcd6155\",\n                            \"lessThan\": \"46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a1436beec5744029f3ac90b6fe71a698dcd6155\",\n                            \"lessThan\": \"915b692e6cb723aac658c25eb82c58fd81235110\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"crypto/pcrypt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.34\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.34\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.258\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.209\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.140\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.86\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.27\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.4\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/ae7e95638d956d556d74b9abb9e780d3bd3dcd9e","https://git.kernel.org/stable/c/1d7f07df450bac3301938fbc4251f2611be4084e","https://git.kernel.org/stable/c/76641449b28979ebd6c02e9598367e119e385236","https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2","https://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276","https://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67","https://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a","https://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43493","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43493","identifiers":["CVE-2026-43493"]},"retained":false,"historicalAffected":[]}],"coverage":[]}