CVE-2026-98354

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98354", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.343Z", "datePublished": "2026-10-06T08:46:41.768Z", "dateUpdated": "2026-10-19T09:18:04.973Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:18:04.973Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mad: Fix receive buffer leak when PKey enforcement fails\n\nib_mad_complete_recv() initializes mad_recv_wc->rmpp_list and then runs\nib_mad_enforce_security() before linking recv_buf onto that list. On\nfailure it calls ib_free_recv_mad(), which only walks rmpp_list and frees\nthe ib_mad_private of every buffer found there. As the list is still\nempty at that point, nothing is freed at all.\n\nThe caller cannot clean up either: ib_mad_recv_done() sets recv to NULL\nright after ib_mad_complete_recv() returns, assuming the MAD layer took\nownership of the buffer. Every MAD that fails the PKey check therefore\nleaks one ib_mad_private (about 300 bytes per IB port MAD, ~2K for OPA),\nand a remote node can trigger this repeatedly by sending MADs with a\nwrong PKey.\n\nLink recv_buf onto rmpp_list right after the list is initialized, so the\nerror path has something to free."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/core/mad.c"], "versions": [{"version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "lessThan": "4617c9a856188674dddb0ca66979746d07688579", "status": "affected", "versionType": "git"}, {"version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "lessThan": "8e2036fb47a5b152d53eadbd35abf311bd34cc7f", "status": "affected", "versionType": "git"}, {"version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "lessThan": "bad289e42f512646a988f278f536d21547df73f1", "status": "affected", "versionType": "git"}, {"version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "lessThan": "752b30e9d339008e5ce7eed412e9446078916129", "status": "affected", "versionType": "git"}, {"version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "lessThan": "39c4ea72a40503e102ae07e6776005f96ca078a6", "status": "affected", "versionType": "git"}, {"version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "lessThan": "5091e25ec503f7fc02723ca435226467b68caac7", "status": "affected", "versionType": "git"}, {"version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "lessThan": "c0d8df85db146d6275e226cb950023be69dd6c77", "status": "affected", "versionType": "git"}, {"version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "lessThan": "3476c28c9addfa253f505e6bd87f1f5598b961d0", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/core/mad.c"], "versions": [{"version": "4.13", "status": "affected"}, {"version": "0", "lessThan": "4.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "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": "4.13", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.13", "versionEndExcluding": 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"https://git.kernel.org/stable/c/3476c28c9addfa253f505e6bd87f1f5598b961d0"}], "title": "RDMA/mad: Fix receive buffer leak when PKey enforcement fails", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/infiniband/core/mad.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "4617c9a856188674dddb0ca66979746d07688579", "status": "affected", "version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "versionType": "git"}, {"lessThan": "8e2036fb47a5b152d53eadbd35abf311bd34cc7f", "status": "affected", "version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "versionType": "git"}, {"lessThan": "bad289e42f512646a988f278f536d21547df73f1", "status": "affected", "version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "versionType": "git"}, {"lessThan": "752b30e9d339008e5ce7eed412e9446078916129", "status": "affected", "version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "versionType": "git"}, {"lessThan": "39c4ea72a40503e102ae07e6776005f96ca078a6", "status": "affected", "version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "versionType": "git"}, {"lessThan": "5091e25ec503f7fc02723ca435226467b68caac7", "status": "affected", "version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "versionType": "git"}, {"lessThan": "c0d8df85db146d6275e226cb950023be69dd6c77", "status": "affected", "version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "versionType": "git"}, {"lessThan": "3476c28c9addfa253f505e6bd87f1f5598b961d0", "status": "affected", "version": "47a2b338fe63200d716d2e24131cdb49f17c77da", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/infiniband/core/mad.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.13"}, {"lessThan": "4.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.54", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "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\nRDMA/mad: Fix receive buffer leak when PKey enforcement fails\n\nib_mad_complete_recv() initializes mad_recv_wc->rmpp_list and then runs\nib_mad_enforce_security() before linking recv_buf onto that list. On\nfailure it calls ib_free_recv_mad(), which only walks rmpp_list and frees\nthe ib_mad_private of every buffer found there. As the list is still\nempty at that point, nothing is freed at all.\n\nThe caller cannot clean up either: ib_mad_recv_done() sets recv to NULL\nright after ib_mad_complete_recv() returns, assuming the MAD layer took\nownership of the buffer. Every MAD that fails the PKey check therefore\nleaks one ib_mad_private (about 300 bytes per IB port MAD, ~2K for OPA),\nand a remote node can trigger this repeatedly by sending MADs with a\nwrong PKey.\n\nLink recv_buf onto rmpp_list right after the list is initialized, so the\nerror path has something to free."}], "id": "CVE-2026-98354", "lastModified": "2026-10-19T10:18:38.097", "metrics": {}, "published": "2026-10-06T09:18:28.883", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3476c28c9addfa253f505e6bd87f1f5598b961d0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/39c4ea72a40503e102ae07e6776005f96ca078a6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4617c9a856188674dddb0ca66979746d07688579"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5091e25ec503f7fc02723ca435226467b68caac7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/752b30e9d339008e5ce7eed412e9446078916129"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8e2036fb47a5b152d53eadbd35abf311bd34cc7f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bad289e42f512646a988f278f536d21547df73f1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c0d8df85db146d6275e226cb950023be69dd6c77"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: RDMA/mad: Fix receive buffer leak when PKey enforcement fails", "id": "2546401", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546401"}, "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-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nRDMA/mad: Fix receive buffer leak when PKey enforcement fails\nib_mad_complete_recv() initializes mad_recv_wc->rmpp_list and then runs\nib_mad_enforce_security() before linking recv_buf onto that list. On\nfailure it calls ib_free_recv_mad(), which only walks rmpp_list and frees\nthe ib_mad_private of every buffer found there. As the list is still\nempty at that point, nothing is freed at all.\nThe caller cannot clean up either: ib_mad_recv_done() sets recv to NULL\nright after ib_mad_complete_recv() returns, assuming the MAD layer took\nownership of the buffer. Every MAD that fails the PKey check therefore\nleaks one ib_mad_private (about 300 bytes per IB port MAD, ~2K for OPA),\nand a remote node can trigger this repeatedly by sending MADs with a\nwrong PKey.\nLink recv_buf onto rmpp_list right after the list is initialized, so the\nerror path has something to free.", "A flaw was found in the Linux kernel's Remote Direct Memory Access (RDMA) subsystem. A remote attacker can trigger a Denial of Service (DoS) by repeatedly sending Management Datagrams (MADs) containing an invalid partition key (PKey). Because the kernel does not properly track and free allocated receive buffers when partition security validation fails, these packets cause an unreleased memory buildup that can eventually exhaust available system memory."], "name": "CVE-2026-98354", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"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": "2026-10-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98354\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98354\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98354.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[47a2b338fe63200d716d2e24131cdb49f17c77da,4617c9a856188674dddb0ca66979746d07688579)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[47a2b338fe63200d716d2e24131cdb49f17c77da,8e2036fb47a5b152d53eadbd35abf311bd34cc7f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[47a2b338fe63200d716d2e24131cdb49f17c77da,bad289e42f512646a988f278f536d21547df73f1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[47a2b338fe63200d716d2e24131cdb49f17c77da,752b30e9d339008e5ce7eed412e9446078916129)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[47a2b338fe63200d716d2e24131cdb49f17c77da,39c4ea72a40503e102ae07e6776005f96ca078a6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[47a2b338fe63200d716d2e24131cdb49f17c77da,5091e25ec503f7fc02723ca435226467b68caac7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[47a2b338fe63200d716d2e24131cdb49f17c77da,c0d8df85db146d6275e226cb950023be69dd6c77)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[47a2b338fe63200d716d2e24131cdb49f17c77da,3476c28c9addfa253f505e6bd87f1f5598b961d0)"}}], "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": "generic", "value": "4.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.271,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.222,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.189,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.158,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.54,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.8,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc4,*]"}}], "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": "2026-10-06T14:45:18.428786+00:00", "updated": "2026-10-07T15:45:06.548591+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}