{"id":"CVE-2026-89531","state":"PUBLISHED","title":"svcrdma: Reject connection when transport allocation fails","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Reject connection when transport allocation fails\n\nhandle_connect_req() returns without action when\nsvc_rdma_create_xprt() fails to allocate the new transport.\nThe CM core returns 0 for CONNECT_REQUEST events, so it does\nnot destroy the new rdma_cm_id. Each allocation failure under\nmemory pressure leaks one rdma_cm_id, and a remote peer driving\nconnection attempts can amplify this.\n\nReject the connection by returning a non-zero status from the\nCM event handler, which tells the CM core to destroy the\norphaned cm_id.","publishedAt":"2026-09-11T19:44:10.769Z","updatedAt":"2026-10-30T12:32:02.456Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"387401ebe7f4897acd18321dc94817ad6a33f580","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"5bf47bbea3c22c0af2293b6c393ab04d5420f7ab","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"6e21754bbf75075f3fee1cebc79f3417364235ec","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"3cf372cec7ab2cd8c6002bf775cc14d90ccb098b","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"1f6a14c142fee4778c32709d1d54595c2e2b7991","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"0944462247dcb7de7622cdaaadf5f05c52707dab","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/xprtrdma/svc_rdma_transport.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.25","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.25","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/xprtrdma/svc_rdma_transport.c"]}],"references":["https://git.kernel.org/stable/c/387401ebe7f4897acd18321dc94817ad6a33f580","https://git.kernel.org/stable/c/5bf47bbea3c22c0af2293b6c393ab04d5420f7ab","https://git.kernel.org/stable/c/6e21754bbf75075f3fee1cebc79f3417364235ec","https://git.kernel.org/stable/c/3cf372cec7ab2cd8c6002bf775cc14d90ccb098b","https://git.kernel.org/stable/c/1f6a14c142fee4778c32709d1d54595c2e2b7991","https://git.kernel.org/stable/c/0944462247dcb7de7622cdaaadf5f05c52707dab"],"weaknesses":[],"ingestedAt":"2026-10-30T12:50:04.827Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89531.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89531","state":"PUBLISHED","datePublished":"2026-09-11T19:44:10.769Z","dateUpdated":"2026-10-30T12:32:02.456Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.720Z"},"containers":{"cna":{"title":"svcrdma: Reject connection when transport allocation fails","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Reject connection when transport allocation fails\n\nhandle_connect_req() returns without action when\nsvc_rdma_create_xprt() fails to allocate the new transport.\nThe CM core returns 0 for CONNECT_REQUEST events, so it does\nnot destroy the new rdma_cm_id. Each allocation failure under\nmemory pressure leaks one rdma_cm_id, and a remote peer driving\nconnection attempts can amplify this.\n\nReject the connection by returning a non-zero status from the\nCM event handler, which tells the CM core to destroy the\norphaned cm_id."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"387401ebe7f4897acd18321dc94817ad6a33f580","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"5bf47bbea3c22c0af2293b6c393ab04d5420f7ab","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"6e21754bbf75075f3fee1cebc79f3417364235ec","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"3cf372cec7ab2cd8c6002bf775cc14d90ccb098b","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"1f6a14c142fee4778c32709d1d54595c2e2b7991","versionType":"git"},{"version":"377f9b2f4529e0ac702fd7b91e216afd0adc959e","status":"affected","lessThan":"0944462247dcb7de7622cdaaadf5f05c52707dab","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/xprtrdma/svc_rdma_transport.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.25","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.25","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/xprtrdma/svc_rdma_transport.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/387401ebe7f4897acd18321dc94817ad6a33f580"},{"url":"https://git.kernel.org/stable/c/5bf47bbea3c22c0af2293b6c393ab04d5420f7ab"},{"url":"https://git.kernel.org/stable/c/6e21754bbf75075f3fee1cebc79f3417364235ec"},{"url":"https://git.kernel.org/stable/c/3cf372cec7ab2cd8c6002bf775cc14d90ccb098b"},{"url":"https://git.kernel.org/stable/c/1f6a14c142fee4778c32709d1d54595c2e2b7991"},{"url":"https://git.kernel.org/stable/c/0944462247dcb7de7622cdaaadf5f05c52707dab"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:32:02.456Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.25","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}