CVE-2026-98162

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{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/server/smb2pdu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fa0c45986fc60b3edfb35879f2fb0eacc0e49e98", "status": "affected", "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d", "versionType": "git"}, {"lessThan": "fea9c705bbc618ba6426424c9f8330555820c9ec", "status": "affected", "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d", "versionType": "git"}, {"lessThan": "a6c88e5e3a75f1e4a98ad4bc4037465ccd7925bc", "status": "affected", "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d", "versionType": "git"}, {"lessThan": "39f2032096715daae5f6fd0f587ca7a474b019df", "status": "affected", "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d", "versionType": "git"}, {"status": "affected", "version": "f2283680a80571ca82d710bc6ecd8f8beac67d63", "versionType": "git"}, {"status": "affected", "version": "9f297df20d93411c0b4ddad7f88ba04a7cd36e77", "versionType": "git"}, {"lessThan": "5.16", "status": "affected", "version": "5.15.145", "versionType": "semver"}, {"lessThan": "6.2", "status": "affected", "version": "6.1.71", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/server/smb2pdu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"lessThan": "6.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "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"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B98C9201-BF17-4E2C-84FF-75EE2AA94DC5", "versionEndExcluding": "5.16", "versionStartIncluding": "5.15.145", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "163E72B5-0F5D-49E2-AAEA-F11E02D730AD", "versionEndExcluding": "6.2", "versionStartIncluding": "6.1.71", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E981DC2A-E9FB-4932-A793-314FCAD5CB2F", "versionEndExcluding": "7.2.6", "versionStartIncluding": "6.6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix tree connection leak in smb2_tree_connect()\n\nSee the procedure below:\n\n smb2_tree_connect\n ksmbd_tree_conn_connect\n xa_store(&sess->tree_conns, tree_conn->id, tree_conn)\n ksmbd_counter_inc(KSMBD_COUNTER_TREE_CONNS)\n ksmbd_share_tree_conn_inc(sc)\n ksmbd_iov_pin_rsp // fail\n status.ret = KSMBD_TREE_CONN_STATUS_NOMEM\n // do not disconnect tree_conn\n\nDisconnect the new tree connection if ksmbd_iov_pin_rsp() fails."}], "id": "CVE-2026-98162", "lastModified": "2026-10-21T13:21:24.797", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-09-25T14:17:27.887", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/39f2032096715daae5f6fd0f587ca7a474b019df"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a6c88e5e3a75f1e4a98ad4bc4037465ccd7925bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fa0c45986fc60b3edfb35879f2fb0eacc0e49e98"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fea9c705bbc618ba6426424c9f8330555820c9ec"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: smb/server: fix tree connection leak in smb2_tree_connect()", "id": "2541417", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541417"}, "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:\nsmb/server: fix tree connection leak in smb2_tree_connect()\nSee the procedure below:\nsmb2_tree_connect\nksmbd_tree_conn_connect\nxa_store(&sess->tree_conns, tree_conn->id, tree_conn)\nksmbd_counter_inc(KSMBD_COUNTER_TREE_CONNS)\nksmbd_share_tree_conn_inc(sc)\nksmbd_iov_pin_rsp // fail\nstatus.ret = KSMBD_TREE_CONN_STATUS_NOMEM\n// do not disconnect tree_conn\nDisconnect the new tree connection if ksmbd_iov_pin_rsp() fails.", "A flaw was found in the Linux kernel's Server Message Block (SMB) file server (ksmbd). A remote attacker could cause a Denial of Service (DoS) by sending tree connect requests that encounter an error during response processing. Because the server fails to properly clean up and release connection structures when an error occurs, repeated failures result in a resource leak that can exhaust system memory."], "name": "CVE-2026-98162", "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": "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": "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": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98162\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98162\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98162.mbox"], "threat_severity": "Moderate"}

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