CVE-2026-98453

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98453", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.350Z", "datePublished": "2026-10-18T15:15:03.262Z", "dateUpdated": "2026-10-30T12:38:12.139Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:38:12.139Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: close handle after create-context parsing failure\n\nSMB2_open() accounts a successful CREATE response as a remote open before\nparsing its create contexts. If smb2_parse_contexts() rejects malformed\ncontext data, SMB2_open() returns without closing the handle, leaving the\nserver-side handle open and num_remote_opens elevated.\n\nClose the handle after a post-CREATE context parsing failure so the error\npath releases the remote resource and balances the open count."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2pdu.c"], "versions": [{"version": "13fb0fc4917621f3dfa285a27eaf7151d770b5e5", "lessThan": "d4c05b5cb0a3132453e36a300d45de44bf6783c4", "status": "affected", "versionType": "git"}, {"version": "890bc4fac3c0973a49cac35f634579bebba7fe48", "lessThan": "ee61f1dc516d97afa79908140d0a8c556c2fe90c", "status": "affected", "versionType": "git"}, {"version": "1ae3c59355dc9882e09c020afe8ffbd895ad0f29", "lessThan": "007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd", "status": "affected", "versionType": "git"}, {"version": "17a0f64cc02d4972e21c733d9f21d1c512963afa", "lessThan": "eaa97a196a107d4ef8775df2248181624151812e", "status": "affected", "versionType": "git"}, {"version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144", "lessThan": "80c67cc71d32ccafc89a29b669243b40d81b930f", "status": "affected", "versionType": "git"}, {"version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144", "lessThan": "f09875ff901e933e7b22c913daf51d21e9d93a45", "status": "affected", "versionType": "git"}, {"version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144", "lessThan": "cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb", "status": "affected", "versionType": "git"}, {"version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144", "lessThan": "566820af017e81497fb5e9d3ad6e7ffe2828bc8b", "status": "affected", "versionType": "git"}, {"version": "6726429c18c62dbf5e96ebbd522f262e016553fb", "status": "affected", "versionType": "git"}, {"version": "5.10.211", "lessThan": "5.10.273", "status": "affected", "versionType": "semver"}, {"version": "5.15.150", "lessThan": "5.15.224", "status": "affected", "versionType": "semver"}, {"version": "6.1.79", "lessThan": "6.1.191", "status": "affected", "versionType": "semver"}, {"version": "6.6.8", "lessThan": "6.6.160", "status": "affected", "versionType": "semver"}, {"version": "5.4.277", "lessThan": "5.5", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2pdu.c"], "versions": [{"version": "6.7", "status": "affected"}, {"version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "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": "6.6.160", "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": "7.2.9", "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": "5.10.211", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.150", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.79", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.8", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.277"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d4c05b5cb0a3132453e36a300d45de44bf6783c4"}, {"url": "https://git.kernel.org/stable/c/ee61f1dc516d97afa79908140d0a8c556c2fe90c"}, {"url": "https://git.kernel.org/stable/c/007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd"}, {"url": "https://git.kernel.org/stable/c/eaa97a196a107d4ef8775df2248181624151812e"}, {"url": "https://git.kernel.org/stable/c/80c67cc71d32ccafc89a29b669243b40d81b930f"}, {"url": "https://git.kernel.org/stable/c/f09875ff901e933e7b22c913daf51d21e9d93a45"}, {"url": "https://git.kernel.org/stable/c/cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb"}, {"url": "https://git.kernel.org/stable/c/566820af017e81497fb5e9d3ad6e7ffe2828bc8b"}], "title": "smb: client: close handle after create-context parsing failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/client/smb2pdu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d4c05b5cb0a3132453e36a300d45de44bf6783c4", "status": "affected", "version": "13fb0fc4917621f3dfa285a27eaf7151d770b5e5", "versionType": "git"}, {"lessThan": "ee61f1dc516d97afa79908140d0a8c556c2fe90c", "status": "affected", "version": "890bc4fac3c0973a49cac35f634579bebba7fe48", "versionType": "git"}, {"lessThan": "007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd", "status": "affected", "version": "1ae3c59355dc9882e09c020afe8ffbd895ad0f29", "versionType": "git"}, {"lessThan": "eaa97a196a107d4ef8775df2248181624151812e", "status": "affected", "version": "17a0f64cc02d4972e21c733d9f21d1c512963afa", "versionType": "git"}, {"lessThan": "80c67cc71d32ccafc89a29b669243b40d81b930f", "status": "affected", "version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144", "versionType": "git"}, {"lessThan": "f09875ff901e933e7b22c913daf51d21e9d93a45", "status": "affected", "version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144", "versionType": "git"}, {"lessThan": "cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb", "status": "affected", "version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144", "versionType": "git"}, {"lessThan": "566820af017e81497fb5e9d3ad6e7ffe2828bc8b", "status": "affected", "version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144", "versionType": "git"}, {"status": "affected", "version": "6726429c18c62dbf5e96ebbd522f262e016553fb", "versionType": "git"}, {"lessThan": "5.10.273", "status": "affected", "version": "5.10.211", "versionType": "semver"}, {"lessThan": "5.15.224", "status": "affected", "version": "5.15.150", "versionType": "semver"}, {"lessThan": "6.1.191", "status": "affected", "version": "6.1.79", "versionType": "semver"}, {"lessThan": "6.6.160", "status": "affected", "version": "6.6.8", "versionType": "semver"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.277", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/client/smb2pdu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.7"}, {"lessThan": "6.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "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": "6.6.160", "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": "7.2.9", "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\nsmb: client: close handle after create-context parsing failure\n\nSMB2_open() accounts a successful CREATE response as a remote open before\nparsing its create contexts. If smb2_parse_contexts() rejects malformed\ncontext data, SMB2_open() returns without closing the handle, leaving the\nserver-side handle open and num_remote_opens elevated.\n\nClose the handle after a post-CREATE context parsing failure so the error\npath releases the remote resource and balances the open count."}], "id": "CVE-2026-98453", "lastModified": "2026-10-30T13:21:14.240", "metrics": {}, "published": "2026-10-18T16:16:55.647", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/566820af017e81497fb5e9d3ad6e7ffe2828bc8b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/80c67cc71d32ccafc89a29b669243b40d81b930f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4c05b5cb0a3132453e36a300d45de44bf6783c4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eaa97a196a107d4ef8775df2248181624151812e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ee61f1dc516d97afa79908140d0a8c556c2fe90c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f09875ff901e933e7b22c913daf51d21e9d93a45"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: smb: client: close handle after create-context parsing failure", "id": "2554826", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554826"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsmb: client: close handle after create-context parsing failure\nSMB2_open() accounts a successful CREATE response as a remote open before\nparsing its create contexts. If smb2_parse_contexts() rejects malformed\ncontext data, SMB2_open() returns without closing the handle, leaving the\nserver-side handle open and num_remote_opens elevated.\nClose the handle after a post-CREATE context parsing failure so the error\npath releases the remote resource and balances the open count.", "A flaw was found in the Linux kernel's Server Message Block (SMB) client. A malicious or compromised SMB server can trigger this vulnerability by returning malformed context responses during a file open operation. When the client fails to parse the context data, it aborts the operation without closing the newly established remote handle, resulting in a resource leak that may lead to a Denial of Service (DoS)."], "name": "CVE-2026-98453", "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": "Not affected", "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": "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": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98453\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98453\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98453.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[af1689a9b7701d9907dfc84d2a4b57c4bc907144,80c67cc71d32ccafc89a29b669243b40d81b930f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[af1689a9b7701d9907dfc84d2a4b57c4bc907144,f09875ff901e933e7b22c913daf51d21e9d93a45)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[af1689a9b7701d9907dfc84d2a4b57c4bc907144,cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[af1689a9b7701d9907dfc84d2a4b57c4bc907144,566820af017e81497fb5e9d3ad6e7ffe2828bc8b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "6726429c18c62dbf5e96ebbd522f262e016553fb"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "13fb0fc4917621f3dfa285a27eaf7151d770b5e5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "890bc4fac3c0973a49cac35f634579bebba7fe48"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "1ae3c59355dc9882e09c020afe8ffbd895ad0f29"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "17a0f64cc02d4972e21c733d9f21d1c512963afa"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.277,5.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.10.211,5.11)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.150,5.16)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.79,6.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.8,6.7)"}}], "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": "6.7"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.7)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc5,*]"}}], "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": "2026-10-18T23:45:06.637466+00:00", "updated": "2026-10-20T12:30:06.361994+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}