{"id":"CVE-2026-46027","revision":null,"records":[{"revision":"442b8e1ee302420f923b8519d1c75f37","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46027","aliases":[],"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":0,"publishedAt":"2026-05-27T12:56:35.628+00:00","modifiedAt":"2026-10-19T19:26:41.717+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 \"net/smc/smc_clc.c\"\n ],\n \"versions\": [\n {\n \"version\": \"0cfdd8f92cac01afbb12e4500514036a2b78756b\",\n \"lessThan\": \"257cdf0c5ced9c0fba8aba501d94b0a5fcef2086\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0cfdd8f92cac01afbb12e4500514036a2b78756b\",\n \"lessThan\": \"22546729b96fc873b23065dc49e3d73c45cfb874\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0cfdd8f92cac01afbb12e4500514036a2b78756b\",\n \"lessThan\": \"5eedbfd82c2884e0010fdfb3c9446a6ebcadb691\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0cfdd8f92cac01afbb12e4500514036a2b78756b\",\n \"lessThan\": \"f0858e1d5624bb120b198f2a8528f97a9b0ae069\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0cfdd8f92cac01afbb12e4500514036a2b78756b\",\n \"lessThan\": \"6180a296ca65b08a81914805cbc0f78da5f10a1f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0cfdd8f92cac01afbb12e4500514036a2b78756b\",\n \"lessThan\": \"ea0b5d0fe96356dce38f98375a57c52a04e13712\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0cfdd8f92cac01afbb12e4500514036a2b78756b\",\n \"lessThan\": \"83bcf9228b0501694fb2589ed1d142855a2887f2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0cfdd8f92cac01afbb12e4500514036a2b78756b\",\n \"lessThan\": \"5a8db80f721deee8e916c2cfdee78decda02ce4f\",\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 \"net/smc/smc_clc.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.11\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.11\",\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:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/257cdf0c5ced9c0fba8aba501d94b0a5fcef2086","https://git.kernel.org/stable/c/22546729b96fc873b23065dc49e3d73c45cfb874","https://git.kernel.org/stable/c/5eedbfd82c2884e0010fdfb3c9446a6ebcadb691","https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069","https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f","https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712","https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2","https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46027","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-46027","identifiers":["CVE-2026-46027"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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