CVE-2026-98450

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98450", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.350Z", "datePublished": "2026-10-18T15:15:00.649Z", "dateUpdated": "2026-10-30T12:38:10.005Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:38:10.005Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: close completed creates on compound wait errors\n\ncompound_send_recv() waits for responses in order. If a later wait is\ninterrupted, or if a later MID fails during response synchronization, an\nearlier CREATE may already have opened a remote handle. The earlier mid\nis then released without invoking handle_cancelled_mid(), leaving the\nremote handle open because no FID was copied to the caller.\n\nMark completed earlier mids as cancelled when a compound wait or MID\nsynchronization aborts. Keep their response buffers attached while the\nMIDs are synchronized, and transfer them only after synchronization of\nthe processed responses, so the release path can inspect successful\nCREATE responses and queue SMB2_close() after a later failure. Account for\na remote open only after the close work is allocated and before it is\nqueued, since the caller has not yet updated num_remote_opens. Mark the\ncreate+close compound used by smb2_unlink() so it is not closed again.\nNon-CREATE responses and compounds that already include a close keep their\nexisting behavior."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2inode.c", "fs/smb/client/smb2misc.c", "fs/smb/client/transport.c"], "versions": [{"version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "lessThan": "da83fed81241b03fd0e7ccf0091b051cf420d8d2", "status": "affected", "versionType": "git"}, {"version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "lessThan": "e94370cf2b76e913a997e9a633ab521a45029284", "status": "affected", "versionType": "git"}, {"version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "lessThan": "c8c6c7e665af4dba75a02f4c9bad3ae2ce341619", "status": "affected", "versionType": "git"}, {"version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "lessThan": "8afc80156b1d9e2cfd02d42c255305fad95b59fc", "status": "affected", "versionType": "git"}, {"version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "lessThan": "2cb07d1a6a30283dbfc809c8036bc1fd103d59fa", "status": "affected", "versionType": "git"}, {"version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "lessThan": "224b56b7c02b2bfb1f5bee18d5f56ae6b052be44", "status": "affected", "versionType": "git"}, {"version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "lessThan": "253612499ce9b4cd7bb922fe507ec204bddd9313", "status": "affected", "versionType": "git"}, {"version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "lessThan": "6c5c547f037bc18f0b8d0b5db5a648f8f630ce85", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2inode.c", "fs/smb/client/smb2misc.c", "fs/smb/client/transport.c"], "versions": [{"version": "4.19", "status": "affected"}, {"version": "0", "lessThan": "4.19", "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": "4.19", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/da83fed81241b03fd0e7ccf0091b051cf420d8d2"}, {"url": "https://git.kernel.org/stable/c/e94370cf2b76e913a997e9a633ab521a45029284"}, {"url": "https://git.kernel.org/stable/c/c8c6c7e665af4dba75a02f4c9bad3ae2ce341619"}, {"url": "https://git.kernel.org/stable/c/8afc80156b1d9e2cfd02d42c255305fad95b59fc"}, {"url": "https://git.kernel.org/stable/c/2cb07d1a6a30283dbfc809c8036bc1fd103d59fa"}, {"url": "https://git.kernel.org/stable/c/224b56b7c02b2bfb1f5bee18d5f56ae6b052be44"}, {"url": "https://git.kernel.org/stable/c/253612499ce9b4cd7bb922fe507ec204bddd9313"}, {"url": "https://git.kernel.org/stable/c/6c5c547f037bc18f0b8d0b5db5a648f8f630ce85"}], "title": "smb: client: close completed creates on compound wait errors", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/client/smb2inode.c", "fs/smb/client/smb2misc.c", "fs/smb/client/transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "da83fed81241b03fd0e7ccf0091b051cf420d8d2", "status": "affected", "version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "versionType": "git"}, {"lessThan": "e94370cf2b76e913a997e9a633ab521a45029284", "status": "affected", "version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "versionType": "git"}, {"lessThan": "c8c6c7e665af4dba75a02f4c9bad3ae2ce341619", "status": "affected", "version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "versionType": "git"}, {"lessThan": "8afc80156b1d9e2cfd02d42c255305fad95b59fc", "status": "affected", "version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "versionType": "git"}, {"lessThan": "2cb07d1a6a30283dbfc809c8036bc1fd103d59fa", "status": "affected", "version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "versionType": "git"}, {"lessThan": "224b56b7c02b2bfb1f5bee18d5f56ae6b052be44", "status": "affected", "version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "versionType": "git"}, {"lessThan": "253612499ce9b4cd7bb922fe507ec204bddd9313", "status": "affected", "version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "versionType": "git"}, {"lessThan": "6c5c547f037bc18f0b8d0b5db5a648f8f630ce85", "status": "affected", "version": "e0bba0b8548179b696e86c158ea8f45f2ef6ad14", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/client/smb2inode.c", "fs/smb/client/smb2misc.c", "fs/smb/client/transport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.19"}, {"lessThan": "4.19", "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 completed creates on compound wait errors\n\ncompound_send_recv() waits for responses in order. If a later wait is\ninterrupted, or if a later MID fails during response synchronization, an\nearlier CREATE may already have opened a remote handle. The earlier mid\nis then released without invoking handle_cancelled_mid(), leaving the\nremote handle open because no FID was copied to the caller.\n\nMark completed earlier mids as cancelled when a compound wait or MID\nsynchronization aborts. Keep their response buffers attached while the\nMIDs are synchronized, and transfer them only after synchronization of\nthe processed responses, so the release path can inspect successful\nCREATE responses and queue SMB2_close() after a later failure. Account for\na remote open only after the close work is allocated and before it is\nqueued, since the caller has not yet updated num_remote_opens. Mark the\ncreate+close compound used by smb2_unlink() so it is not closed again.\nNon-CREATE responses and compounds that already include a close keep their\nexisting behavior."}], "id": "CVE-2026-98450", "lastModified": "2026-10-30T13:21:13.967", "metrics": {}, "published": "2026-10-18T16:16:55.333", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/224b56b7c02b2bfb1f5bee18d5f56ae6b052be44"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/253612499ce9b4cd7bb922fe507ec204bddd9313"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2cb07d1a6a30283dbfc809c8036bc1fd103d59fa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6c5c547f037bc18f0b8d0b5db5a648f8f630ce85"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8afc80156b1d9e2cfd02d42c255305fad95b59fc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c8c6c7e665af4dba75a02f4c9bad3ae2ce341619"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/da83fed81241b03fd0e7ccf0091b051cf420d8d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e94370cf2b76e913a997e9a633ab521a45029284"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: smb: client: close completed creates on compound wait errors", "id": "2554854", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554854"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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 completed creates on compound wait errors\ncompound_send_recv() waits for responses in order. If a later wait is\ninterrupted, or if a later MID fails during response synchronization, an\nearlier CREATE may already have opened a remote handle. The earlier mid\nis then released without invoking handle_cancelled_mid(), leaving the\nremote handle open because no FID was copied to the caller.\nMark completed earlier mids as cancelled when a compound wait or MID\nsynchronization aborts. Keep their response buffers attached while the\nMIDs are synchronized, and transfer them only after synchronization of\nthe processed responses, so the release path can inspect successful\nCREATE responses and queue SMB2_close() after a later failure. Account for\na remote open only after the close work is allocated and before it is\nqueued, since the caller has not yet updated num_remote_opens. Mark the\ncreate+close compound used by smb2_unlink() so it is not closed again.\nNon-CREATE responses and compounds that already include a close keep their\nexisting behavior.", "A flaw was found in the Linux kernel's Server Message Block (SMB) client. This vulnerability can lead to a Denial of Service (DoS) through resource exhaustion caused by unclosed remote file handles. When processing compound requests, an interrupted operation or synchronization failure causes previously opened file handles to be released without issuing a close command to the server. A local user can exploit this behavior during compound file operations to leave remote handles open indefinitely, potentially exhausting server connections and resources."], "name": "CVE-2026-98450", "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-2026-98450\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98450\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98450.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e0bba0b8548179b696e86c158ea8f45f2ef6ad14,2cb07d1a6a30283dbfc809c8036bc1fd103d59fa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e0bba0b8548179b696e86c158ea8f45f2ef6ad14,224b56b7c02b2bfb1f5bee18d5f56ae6b052be44)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e0bba0b8548179b696e86c158ea8f45f2ef6ad14,253612499ce9b4cd7bb922fe507ec204bddd9313)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e0bba0b8548179b696e86c158ea8f45f2ef6ad14,6c5c547f037bc18f0b8d0b5db5a648f8f630ce85)"}}], "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": "4.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.19)"}}, {"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": "semver", "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": "2026-10-19T00:00:10.176783+00:00", "updated": "2026-10-22T23:30:13.577797+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}