CVE-2026-92509

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-92509", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-16T12:21:13.872Z", "datePublished": "2026-09-17T16:10:20.100Z", "dateUpdated": "2026-10-19T09:04:15.303Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:04:15.303Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in counter_release()\n\nWhen accessing a counter via the netlink path the only synchronization\nmechanism for the said counter is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\ncounter_release(), which is too late, since by that point\nvendor-specific resources associated with the counter might already be\nfreed. This can leave a short window where the counter remains\naccessible through restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_del() call to be before the\nfreeing of the vendor-specific resources, ensuring that the counter is\nremoved from restrack before its internal resources are released.\nThis guarantees that no new users hold references to a counter that is\nin the process of destruction."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/core/counters.c"], "versions": [{"version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "lessThan": "5eb0c57a8b568eb08f464861d84d518a2af939ac", "status": "affected", "versionType": "git"}, {"version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "lessThan": "d5cc211e8c39e46f357d30a092d683e84d560de9", "status": "affected", "versionType": "git"}, {"version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "lessThan": "2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b", "status": "affected", "versionType": "git"}, {"version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "lessThan": "8c013e3a8d8273da4d47bf1c27f016a3551996f5", "status": "affected", "versionType": "git"}, {"version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "lessThan": "64c72390d8407ea86de712a477c796b07d37abc4", "status": "affected", "versionType": "git"}, {"version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "lessThan": "235ef2d0e750885c29340b0fc40620a7a4f52e12", "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/counters.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "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": "5.3", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5eb0c57a8b568eb08f464861d84d518a2af939ac"}, {"url": "https://git.kernel.org/stable/c/d5cc211e8c39e46f357d30a092d683e84d560de9"}, {"url": "https://git.kernel.org/stable/c/2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b"}, {"url": "https://git.kernel.org/stable/c/8c013e3a8d8273da4d47bf1c27f016a3551996f5"}, {"url": "https://git.kernel.org/stable/c/64c72390d8407ea86de712a477c796b07d37abc4"}, {"url": "https://git.kernel.org/stable/c/235ef2d0e750885c29340b0fc40620a7a4f52e12"}], "title": "RDMA/core: Fix potential use after free in counter_release()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/infiniband/core/counters.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5eb0c57a8b568eb08f464861d84d518a2af939ac", "status": "affected", "version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "versionType": "git"}, {"lessThan": "d5cc211e8c39e46f357d30a092d683e84d560de9", "status": "affected", "version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "versionType": "git"}, {"lessThan": "2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b", "status": "affected", "version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "versionType": "git"}, {"lessThan": "8c013e3a8d8273da4d47bf1c27f016a3551996f5", "status": "affected", "version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "versionType": "git"}, {"lessThan": "64c72390d8407ea86de712a477c796b07d37abc4", "status": "affected", "version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "versionType": "git"}, {"lessThan": "235ef2d0e750885c29340b0fc40620a7a4f52e12", "status": "affected", "version": "99fa331dc8629be55ac7a0cca0dc56492070ddac", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/infiniband/core/counters.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"lessThan": "5.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "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/core: Fix potential use after free in counter_release()\n\nWhen accessing a counter via the netlink path the only synchronization\nmechanism for the said counter is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\ncounter_release(), which is too late, since by that point\nvendor-specific resources associated with the counter might already be\nfreed. This can leave a short window where the counter remains\naccessible through restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_del() call to be before the\nfreeing of the vendor-specific resources, ensuring that the counter is\nremoved from restrack before its internal resources are released.\nThis guarantees that no new users hold references to a counter that is\nin the process of destruction."}], "id": "CVE-2026-92509", "lastModified": "2026-10-19T10:16:51.260", "metrics": {}, "published": "2026-09-17T17:17:53.590", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/235ef2d0e750885c29340b0fc40620a7a4f52e12"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5eb0c57a8b568eb08f464861d84d518a2af939ac"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/64c72390d8407ea86de712a477c796b07d37abc4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c013e3a8d8273da4d47bf1c27f016a3551996f5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5cc211e8c39e46f357d30a092d683e84d560de9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[99fa331dc8629be55ac7a0cca0dc56492070ddac,5eb0c57a8b568eb08f464861d84d518a2af939ac)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[99fa331dc8629be55ac7a0cca0dc56492070ddac,d5cc211e8c39e46f357d30a092d683e84d560de9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[99fa331dc8629be55ac7a0cca0dc56492070ddac,2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[99fa331dc8629be55ac7a0cca0dc56492070ddac,8c013e3a8d8273da4d47bf1c27f016a3551996f5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[99fa331dc8629be55ac7a0cca0dc56492070ddac,64c72390d8407ea86de712a477c796b07d37abc4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[99fa331dc8629be55ac7a0cca0dc56492070ddac,235ef2d0e750885c29340b0fc40620a7a4f52e12)"}}], "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": "5.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.188,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "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": "2026-09-19T12:15:17.378153+00:00", "updated": "2026-09-19T13:45:15.365507+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}