{"api_version":"1","generated_at":"2026-05-28T15:54:17+00:00","cve":"CVE-2026-46027","urls":{"html":"https://cve.report/CVE-2026-46027","api":"https://cve.report/api/cve/CVE-2026-46027.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46027","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46027"},"summary":{"title":"net/smc: avoid early lgr access in smc_clc_wait_msg","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: avoid early lgr access in smc_clc_wait_msg\n\nA CLC decline can be received while the handshake is still in an early\nstage, before the connection has been associated with a link group.\n\nThe decline handling in smc_clc_wait_msg() updates link-group level sync\nstate for first-contact declines, but that state only exists after link\ngroup setup has completed. Guard the link-group update accordingly and\nkeep the per-socket peer diagnosis handling unchanged.\n\nThis preserves the existing sync_err handling for established link-group\ncontexts and avoids touching link-group state before it is available.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:21","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f","name":"https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712","name":"https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069","name":"https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2","name":"https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f","name":"https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46027","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46027","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0cfdd8f92cac01afbb12e4500514036a2b78756b f0858e1d5624bb120b198f2a8528f97a9b0ae069 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0cfdd8f92cac01afbb12e4500514036a2b78756b 6180a296ca65b08a81914805cbc0f78da5f10a1f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0cfdd8f92cac01afbb12e4500514036a2b78756b ea0b5d0fe96356dce38f98375a57c52a04e13712 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0cfdd8f92cac01afbb12e4500514036a2b78756b 83bcf9228b0501694fb2589ed1d142855a2887f2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0cfdd8f92cac01afbb12e4500514036a2b78756b 5a8db80f721deee8e916c2cfdee78decda02ce4f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.11","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.11 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-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/smc/smc_clc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f0858e1d5624bb120b198f2a8528f97a9b0ae069","status":"affected","version":"0cfdd8f92cac01afbb12e4500514036a2b78756b","versionType":"git"},{"lessThan":"6180a296ca65b08a81914805cbc0f78da5f10a1f","status":"affected","version":"0cfdd8f92cac01afbb12e4500514036a2b78756b","versionType":"git"},{"lessThan":"ea0b5d0fe96356dce38f98375a57c52a04e13712","status":"affected","version":"0cfdd8f92cac01afbb12e4500514036a2b78756b","versionType":"git"},{"lessThan":"83bcf9228b0501694fb2589ed1d142855a2887f2","status":"affected","version":"0cfdd8f92cac01afbb12e4500514036a2b78756b","versionType":"git"},{"lessThan":"5a8db80f721deee8e916c2cfdee78decda02ce4f","status":"affected","version":"0cfdd8f92cac01afbb12e4500514036a2b78756b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/smc/smc_clc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.11"},{"lessThan":"4.11","status":"unaffected","version":"0","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-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.140","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.86","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.27","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"4.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"4.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: avoid early lgr access in smc_clc_wait_msg\n\nA CLC decline can be received while the handshake is still in an early\nstage, before the connection has been associated with a link group.\n\nThe decline handling in smc_clc_wait_msg() updates link-group level sync\nstate for first-contact declines, but that state only exists after link\ngroup setup has completed. Guard the link-group update accordingly and\nkeep the per-socket peer diagnosis handling unchanged.\n\nThis preserves the existing sync_err handling for established link-group\ncontexts and avoids touching link-group state before it is available."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:56:35.628Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069"},{"url":"https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f"},{"url":"https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712"},{"url":"https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2"},{"url":"https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f"}],"title":"net/smc: avoid early lgr access in smc_clc_wait_msg","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46027","datePublished":"2026-05-27T12:56:35.628Z","dateReserved":"2026-05-13T15:03:33.093Z","dateUpdated":"2026-05-27T12:56:35.628Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:21","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46027","Ordinal":"1","Title":"net/smc: avoid early lgr access in smc_clc_wait_msg","CVE":"CVE-2026-46027","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46027","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: avoid early lgr access in smc_clc_wait_msg\n\nA CLC decline can be received while the handshake is still in an early\nstage, before the connection has been associated with a link group.\n\nThe decline handling in smc_clc_wait_msg() updates link-group level sync\nstate for first-contact declines, but that state only exists after link\ngroup setup has completed. Guard the link-group update accordingly and\nkeep the per-socket peer diagnosis handling unchanged.\n\nThis preserves the existing sync_err handling for established link-group\ncontexts and avoids touching link-group state before it is available.","Type":"Description","Title":"net/smc: avoid early lgr access in smc_clc_wait_msg"}]}}}