CVE-2026-99212

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99212", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.401Z", "datePublished": "2026-10-28T10:36:05.612Z", "dateUpdated": "2026-10-31T12:45:05.538Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-31T12:45:05.538Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: don't let the rdma_cm destroy an id RDS still owns on route failure\n\nrds_rdma_cm_event_handler_cmn() hands the return value of\nrdma_resolve_route() straight back to the rdma_cm on\nRDMA_CM_EVENT_ADDR_RESOLVED. A synchronous failure there - -ENOMEM\nfrom the route work allocation, an SA query that cannot be set up, a\nRoCE route with no usable device - makes addr_handler() destroy the\nid the event was delivered on. That id is ic->i_cm_id, and nothing\nclears the pointer: the connection sits in RDS_CONN_CONNECTING with a\nfreed id until its shutdown calls rdma_disconnect() and\nrdma_destroy_id() on it.\n\nThe ROUTE_RESOLVED case already avoids this: rds_ib_cm_initiate_connect()\nforces a zero return while ic->i_cm_id == cm_id, as the comment there\nexplains. Do the same here - drop the connection and return 0 - so\nthe id stays RDS's to destroy from the shutdown, and the reconnect\ngets a fresh one."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - An unprivileged process reaches patched rds_rdma_cm_event_handler_cmn() through AF_RDS sendmsg() \u2192 rds_connect_worker() \u2192 rds_ib_conn_path_connect() \u2192 addr_handler(). The failure occurs in local rdma_resolve_route() setup before any RDS message reaches a peer; no remote protocol message carries the trigger.\nAC:H - The synchronous error requires cma_resolve_ib_route() allocation/SA setup failure or cma_resolve_iboe_route() finding no usable netdevice or MTU. Choosing an RDS destination cannot reliably create those allocator, fabric-manager, or device states; an ordinary unreachable peer instead fails outside this ownership-error path.\nPR:L - rds_create(), rds_bind(), and rds_sendmsg() contain no capability check, and rds_ib_laddr_check() requires init_net but not root. Thus an ordinary host user can bind a configured IB/RoCE address and initiate the affected connection.\nUI:N - The attacker performs the AF_RDS sendmsg() themselves and can subsequently use RDS_CMSG_RDMA_MAP to reach __rds_rdma_map() \u2192 rds_ib_get_mr(), which dereferences the stale ic->i_cm_id. No victim action is required.\nS:U - The freed rdma_id_private and subsequent stale-pointer operations remain within the host kernel's RDS/RDMA security authority; no VM, IOMMU, or other distinct boundary is crossed.\nC:H - addr_handler() frees rdma_id_private while ic->i_cm_id retains its address, and rds_ib_get_mr() later reads qp from that reclaimed object. This kernel heap UAF permits controlled slab reuse and can be leveraged for arbitrary memory disclosure.\nI:H - If the reclaimed i_cm_id supplies a non-NULL qp, rds_ib_post_reg_frmr() passes it to ib_post_send(), reaching device operations through freed data; shutdown also calls rdma_disconnect() and rdma_destroy_id() on the stale ID. These provide control-flow and double-free corruption primitives.\nA:H - rds_ib_get_mr() can oops while reading ic->i_cm_id->qp, while rds_ib_conn_path_shutdown() later disconnects and destroys the already-freed ID. Either UAF path can panic the kernel."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/rds/rdma_transport.c"], "versions": [{"version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "lessThan": "664fd3205cbec71ac52c005ee705cd917bb6fb1a", "status": "affected", "versionType": "git"}, {"version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "lessThan": "b8f141f65885810e24fc23b8a71692db62d535bf", "status": "affected", "versionType": "git"}, {"version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "lessThan": "e677eda15df7d5ce256654343418043c7ffd6f9b", "status": "affected", "versionType": "git"}, {"version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "lessThan": "92143c5d80382588d5a3047a4f14023ee9ef6485", "status": "affected", "versionType": "git"}, {"version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "lessThan": "a7c7d0ff876377fea7ae876a28d6df8d9349df57", "status": "affected", "versionType": "git"}, {"version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "lessThan": "91ece3efa064f0b3b3c67b9b045d9eeb4a034e43", "status": "affected", "versionType": "git"}, {"version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "lessThan": "98d446b7c013254a8a7b49720557676a3a851fde", "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/rds/rdma_transport.c"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.161", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.115", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.59", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.13", "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": "2.6.30", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.6.161"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.12.115"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.18.59"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.2.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/664fd3205cbec71ac52c005ee705cd917bb6fb1a"}, {"url": "https://git.kernel.org/stable/c/b8f141f65885810e24fc23b8a71692db62d535bf"}, {"url": "https://git.kernel.org/stable/c/e677eda15df7d5ce256654343418043c7ffd6f9b"}, {"url": "https://git.kernel.org/stable/c/92143c5d80382588d5a3047a4f14023ee9ef6485"}, {"url": "https://git.kernel.org/stable/c/a7c7d0ff876377fea7ae876a28d6df8d9349df57"}, {"url": "https://git.kernel.org/stable/c/91ece3efa064f0b3b3c67b9b045d9eeb4a034e43"}, {"url": "https://git.kernel.org/stable/c/98d446b7c013254a8a7b49720557676a3a851fde"}], "title": "net/rds: don't let the rdma_cm destroy an id RDS still owns on route failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/rds/rdma_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "664fd3205cbec71ac52c005ee705cd917bb6fb1a", "status": "affected", "version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "versionType": "git"}, {"lessThan": "b8f141f65885810e24fc23b8a71692db62d535bf", "status": "affected", "version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "versionType": "git"}, {"lessThan": "e677eda15df7d5ce256654343418043c7ffd6f9b", "status": "affected", "version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "versionType": "git"}, {"lessThan": "92143c5d80382588d5a3047a4f14023ee9ef6485", "status": "affected", "version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "versionType": "git"}, {"lessThan": "a7c7d0ff876377fea7ae876a28d6df8d9349df57", "status": "affected", "version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "versionType": "git"}, {"lessThan": "91ece3efa064f0b3b3c67b9b045d9eeb4a034e43", "status": "affected", "version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "versionType": "git"}, {"lessThan": "98d446b7c013254a8a7b49720557676a3a851fde", "status": "affected", "version": "55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/rds/rdma_transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.30"}, {"lessThan": "2.6.30", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.161", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.115", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.59", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.13", "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\nnet/rds: don't let the rdma_cm destroy an id RDS still owns on route failure\n\nrds_rdma_cm_event_handler_cmn() hands the return value of\nrdma_resolve_route() straight back to the rdma_cm on\nRDMA_CM_EVENT_ADDR_RESOLVED. A synchronous failure there - -ENOMEM\nfrom the route work allocation, an SA query that cannot be set up, a\nRoCE route with no usable device - makes addr_handler() destroy the\nid the event was delivered on. That id is ic->i_cm_id, and nothing\nclears the pointer: the connection sits in RDS_CONN_CONNECTING with a\nfreed id until its shutdown calls rdma_disconnect() and\nrdma_destroy_id() on it.\n\nThe ROUTE_RESOLVED case already avoids this: rds_ib_cm_initiate_connect()\nforces a zero return while ic->i_cm_id == cm_id, as the comment there\nexplains. Do the same here - drop the connection and return 0 - so\nthe id stays RDS's to destroy from the shutdown, and the reconnect\ngets a fresh one."}], "id": "CVE-2026-99212", "lastModified": "2026-10-31T13:17:59.453", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-10-28T11:17:42.650", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/664fd3205cbec71ac52c005ee705cd917bb6fb1a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/91ece3efa064f0b3b3c67b9b045d9eeb4a034e43"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/92143c5d80382588d5a3047a4f14023ee9ef6485"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/98d446b7c013254a8a7b49720557676a3a851fde"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a7c7d0ff876377fea7ae876a28d6df8d9349df57"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b8f141f65885810e24fc23b8a71692db62d535bf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e677eda15df7d5ce256654343418043c7ffd6f9b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net/rds: don't let the rdma_cm destroy an id RDS still owns on route failure", "id": "2562734", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2562734"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/rds: don't let the rdma_cm destroy an id RDS still owns on route failure\nrds_rdma_cm_event_handler_cmn() hands the return value of\nrdma_resolve_route() straight back to the rdma_cm on\nRDMA_CM_EVENT_ADDR_RESOLVED. A synchronous failure there - -ENOMEM\nfrom the route work allocation, an SA query that cannot be set up, a\nRoCE route with no usable device - makes addr_handler() destroy the\nid the event was delivered on. That id is ic->i_cm_id, and nothing\nclears the pointer: the connection sits in RDS_CONN_CONNECTING with a\nfreed id until its shutdown calls rdma_disconnect() and\nrdma_destroy_id() on it.\nThe ROUTE_RESOLVED case already avoids this: rds_ib_cm_initiate_connect()\nforces a zero return while ic->i_cm_id == cm_id, as the comment there\nexplains. Do the same here - drop the connection and return 0 - so\nthe id stays RDS's to destroy from the shutdown, and the reconnect\ngets a fresh one.", "A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS) subsystem. A local attacker could exploit this flaw to cause a Denial of Service (DoS) or memory corruption via a use-after-free condition. When route resolution fails during Remote Direct Memory Access (RDMA) connection establishment, the underlying connection identifier is prematurely released while the RDS subsystem retains a reference to it. When the connection is subsequently shut down, the kernel attempts to access and destroy the freed identifier, resulting in a system crash."], "name": "CVE-2026-99212", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-99212\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-99212\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99212.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea,a7c7d0ff876377fea7ae876a28d6df8d9349df57)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea,91ece3efa064f0b3b3c67b9b045d9eeb4a034e43)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea,98d446b7c013254a8a7b49720557676a3a851fde)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.30"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.30)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.59,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.13,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea,a7c7d0ff876377fea7ae876a28d6df8d9349df57)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea,91ece3efa064f0b3b3c67b9b045d9eeb4a034e43)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[55b7ed0b582f9ff4bf3b9b44969cddda8c6763ea,98d446b7c013254a8a7b49720557676a3a851fde)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"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": "2.6.30"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.30)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.59,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.13,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-28T12:45:16.179332+00:00", "updated": "2026-10-31T14:30:13.414183+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}