CVE-2026-89527

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89527", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.719Z", "datePublished": "2026-09-11T19:44:07.785Z", "dateUpdated": "2026-10-30T12:31:59.254Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:31:59.254Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Use svc_xprt_put to free listener on create failure\n\nsvc_rdma_create() calls kfree(cma_xprt) when\nsvc_rdma_create_listen_id() fails. svc_xprt_init() has already\nacquired a net namespace reference via get_net_track(); kfree\nbypasses svc_xprt_free() which releases it.\n\nReplace the kfree() with svc_xprt_put() so the kref_init birth\nreference drops to zero and svc_xprt_free() dispatches\nsvc_rdma_free() to clean up properly. sc_cm_id is still NULL\nat that point; the preceding patch added the necessary NULL\nguard in svc_rdma_free().\n\nsvc_xprt_free() also drops the module reference via\nmodule_put(), but the caller _svc_xprt_create() does the same\non xpo_create failure, double-putting the single\ntry_module_get() it acquired. Take a compensating\n__module_get() before the svc_xprt_put() to keep the count\nbalanced, matching the convention in svc_rdma_accept()'s error\npath."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sunrpc/xprtrdma/svc_rdma_transport.c"], "versions": [{"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "lessThan": "31b8293495ba94ccf494e556a318886b716884b6", "status": "affected", "versionType": "git"}, {"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "lessThan": "2e35ec558b8cece9399a50141ecaeadbdb8768dc", "status": "affected", "versionType": "git"}, {"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "lessThan": "ee70d690b5544b736706a9a5796aafb634013f54", "status": "affected", "versionType": "git"}, {"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "lessThan": "e68380710fc970e07610b2f42594575ad35fdb1c", "status": "affected", "versionType": "git"}, {"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "lessThan": "ac1dd6002f758ab7dd3e737757e5a1bb1c0b38d6", "status": "affected", "versionType": "git"}, {"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "lessThan": "e346ef7bcb137f50c49f969330ab7dcf64ea1654", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sunrpc/xprtrdma/svc_rdma_transport.c"], "versions": [{"version": "2.6.37", "status": "affected"}, {"version": "0", "lessThan": "2.6.37", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "2.6.37", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/31b8293495ba94ccf494e556a318886b716884b6"}, {"url": "https://git.kernel.org/stable/c/2e35ec558b8cece9399a50141ecaeadbdb8768dc"}, {"url": "https://git.kernel.org/stable/c/ee70d690b5544b736706a9a5796aafb634013f54"}, {"url": "https://git.kernel.org/stable/c/e68380710fc970e07610b2f42594575ad35fdb1c"}, {"url": "https://git.kernel.org/stable/c/ac1dd6002f758ab7dd3e737757e5a1bb1c0b38d6"}, {"url": "https://git.kernel.org/stable/c/e346ef7bcb137f50c49f969330ab7dcf64ea1654"}], "title": "svcrdma: Use svc_xprt_put to free listener on create failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/sunrpc/xprtrdma/svc_rdma_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "31b8293495ba94ccf494e556a318886b716884b6", "status": "affected", "version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "versionType": "git"}, {"lessThan": "2e35ec558b8cece9399a50141ecaeadbdb8768dc", "status": "affected", "version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "versionType": "git"}, {"lessThan": "ee70d690b5544b736706a9a5796aafb634013f54", "status": "affected", "version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "versionType": "git"}, {"lessThan": "e68380710fc970e07610b2f42594575ad35fdb1c", "status": "affected", "version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "versionType": "git"}, {"lessThan": "ac1dd6002f758ab7dd3e737757e5a1bb1c0b38d6", "status": "affected", "version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "versionType": "git"}, {"lessThan": "e346ef7bcb137f50c49f969330ab7dcf64ea1654", "status": "affected", "version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/sunrpc/xprtrdma/svc_rdma_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.37"}, {"lessThan": "2.6.37", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Use svc_xprt_put to free listener on create failure\n\nsvc_rdma_create() calls kfree(cma_xprt) when\nsvc_rdma_create_listen_id() fails. svc_xprt_init() has already\nacquired a net namespace reference via get_net_track(); kfree\nbypasses svc_xprt_free() which releases it.\n\nReplace the kfree() with svc_xprt_put() so the kref_init birth\nreference drops to zero and svc_xprt_free() dispatches\nsvc_rdma_free() to clean up properly. sc_cm_id is still NULL\nat that point; the preceding patch added the necessary NULL\nguard in svc_rdma_free().\n\nsvc_xprt_free() also drops the module reference via\nmodule_put(), but the caller _svc_xprt_create() does the same\non xpo_create failure, double-putting the single\ntry_module_get() it acquired. Take a compensating\n__module_get() before the svc_xprt_put() to keep the count\nbalanced, matching the convention in svc_rdma_accept()'s error\npath."}], "id": "CVE-2026-89527", "lastModified": "2026-10-30T13:20:18.543", "metrics": {}, "published": "2026-09-11T20:19:35.503", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e35ec558b8cece9399a50141ecaeadbdb8768dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/31b8293495ba94ccf494e556a318886b716884b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ac1dd6002f758ab7dd3e737757e5a1bb1c0b38d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e346ef7bcb137f50c49f969330ab7dcf64ea1654"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e68380710fc970e07610b2f42594575ad35fdb1c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ee70d690b5544b736706a9a5796aafb634013f54"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Resource leak in svcrdma module can lead to denial of service", "id": "2532056", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532056"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's svcrdma module. This vulnerability occurs when a listener creation fails, leading to an improper release of a network namespace reference. This resource leak can be exploited by a local attacker, potentially causing a denial of service (DoS) by exhausting system resources."], "name": "CVE-2026-89527", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-11T19:44:07Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89527\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89527\nhttps://git.kernel.org/stable/c/ac1dd6002f758ab7dd3e737757e5a1bb1c0b38d6\nhttps://git.kernel.org/stable/c/e346ef7bcb137f50c49f969330ab7dcf64ea1654"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4fb8518bdac8e85f6580ea3f586adf396cd472bc,ac1dd6002f758ab7dd3e737757e5a1bb1c0b38d6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4fb8518bdac8e85f6580ea3f586adf396cd472bc,e346ef7bcb137f50c49f969330ab7dcf64ea1654)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.37"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.37)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-12T03:30:08.482860+00:00", "updated": "2026-09-15T22:30:15.255955+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}