CVE-2026-98168

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98168", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.321Z", "datePublished": "2026-10-06T08:44:13.534Z", "dateUpdated": "2026-10-21T12:54:47.190Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:54:47.190Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix reparse buffer bounds in cifs_query_reparse_point()\n\nIn cifs_query_reparse_point(), the start >= end check before casting to\nstruct reparse_data_buffer * only ensures the start pointer is within the\nresponse. It fails to verify that there is enough space remaining for the\nfixed 8-byte header of the structure.\n\nIf a server provides a DataOffset that leaves less than 8 bytes remaining,\nthe check passes, but subsequent reads of ReparseTag and ReparseDataLength\nwill occur out-of-bounds.\n\nFix this by ensuring the remaining space is at least the size of the\nreparse_data_buffer structure before accessing its fields."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/cifssmb.c"], "versions": [{"version": "848d78e3625f15de09d34a562dc49a98b78a62f3", "lessThan": "aa00eead258e4fe8158a3a3e2d65facf06274abd", "status": "affected", "versionType": "git"}, {"version": "48ca7139ab7f0bbed95ff7a901ea497017769657", "lessThan": "3d67f155fe5813cfb02a551a9a12d6ea06a902e9", "status": "affected", "versionType": "git"}, {"version": "56e84c64fc257a95728ee73165456b025c48d408", "lessThan": "d1152c96a3002e3df6b9a5b007cecaa7b19b4f79", "status": "affected", "versionType": "git"}, {"version": "56e84c64fc257a95728ee73165456b025c48d408", "lessThan": "8dc5db3a0e583ea8d31d0613cefd99e93e095c3c", "status": "affected", "versionType": "git"}, {"version": "56e84c64fc257a95728ee73165456b025c48d408", "lessThan": "5f0306e731e2f46e91419eae57eee3a241c055e0", "status": "affected", "versionType": "git"}, {"version": "c13b779d26b3702fba8f7d5fe757aba5bda85fd0", "status": "affected", "versionType": "git"}, {"version": "6.6.94", "lessThan": "6.6.160", "status": "affected", "versionType": "semver"}, {"version": "6.12.34", "lessThan": "6.12.112", "status": "affected", "versionType": "semver"}, {"version": "6.15.3", "lessThan": "6.16", "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/cifssmb.c"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "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": "6.6.94", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.34", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/aa00eead258e4fe8158a3a3e2d65facf06274abd"}, {"url": "https://git.kernel.org/stable/c/3d67f155fe5813cfb02a551a9a12d6ea06a902e9"}, {"url": "https://git.kernel.org/stable/c/d1152c96a3002e3df6b9a5b007cecaa7b19b4f79"}, {"url": "https://git.kernel.org/stable/c/8dc5db3a0e583ea8d31d0613cefd99e93e095c3c"}, {"url": "https://git.kernel.org/stable/c/5f0306e731e2f46e91419eae57eee3a241c055e0"}], "title": "smb: client: fix reparse buffer bounds in cifs_query_reparse_point()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/client/cifssmb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "aa00eead258e4fe8158a3a3e2d65facf06274abd", "status": "affected", "version": "848d78e3625f15de09d34a562dc49a98b78a62f3", "versionType": "git"}, {"lessThan": "3d67f155fe5813cfb02a551a9a12d6ea06a902e9", "status": "affected", "version": "48ca7139ab7f0bbed95ff7a901ea497017769657", "versionType": "git"}, {"lessThan": "d1152c96a3002e3df6b9a5b007cecaa7b19b4f79", "status": "affected", "version": "56e84c64fc257a95728ee73165456b025c48d408", "versionType": "git"}, {"lessThan": "8dc5db3a0e583ea8d31d0613cefd99e93e095c3c", "status": "affected", "version": "56e84c64fc257a95728ee73165456b025c48d408", "versionType": "git"}, {"lessThan": "5f0306e731e2f46e91419eae57eee3a241c055e0", "status": "affected", "version": "56e84c64fc257a95728ee73165456b025c48d408", "versionType": "git"}, {"status": "affected", "version": "c13b779d26b3702fba8f7d5fe757aba5bda85fd0", "versionType": "git"}, {"lessThan": "6.6.160", "status": "affected", "version": "6.6.94", "versionType": "semver"}, {"lessThan": "6.12.112", "status": "affected", "version": "6.12.34", "versionType": "semver"}, {"lessThan": "6.16", "status": "affected", "version": "6.15.3", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/client/cifssmb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.16"}, {"lessThan": "6.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "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\nsmb: client: fix reparse buffer bounds in cifs_query_reparse_point()\n\nIn cifs_query_reparse_point(), the start >= end check before casting to\nstruct reparse_data_buffer * only ensures the start pointer is within the\nresponse. It fails to verify that there is enough space remaining for the\nfixed 8-byte header of the structure.\n\nIf a server provides a DataOffset that leaves less than 8 bytes remaining,\nthe check passes, but subsequent reads of ReparseTag and ReparseDataLength\nwill occur out-of-bounds.\n\nFix this by ensuring the remaining space is at least the size of the\nreparse_data_buffer structure before accessing its fields."}], "id": "CVE-2026-98168", "lastModified": "2026-10-21T13:21:24.917", "metrics": {}, "published": "2026-10-06T09:17:58.333", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3d67f155fe5813cfb02a551a9a12d6ea06a902e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5f0306e731e2f46e91419eae57eee3a241c055e0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8dc5db3a0e583ea8d31d0613cefd99e93e095c3c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aa00eead258e4fe8158a3a3e2d65facf06274abd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1152c96a3002e3df6b9a5b007cecaa7b19b4f79"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: smb: client: fix reparse buffer bounds in cifs_query_reparse_point()", "id": "2546433", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546433"}, "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-125", "details": ["A flaw was found in the Linux kernel's Server Message Block (SMB) client. In the reparse point query handling logic, the client fails to properly validate response buffer boundaries before accessing data structures. A malicious or compromised SMB server can exploit this by returning a crafted response with an invalid data offset, triggering an out-of-bounds memory read. This issue can lead to a system crash, resulting in a Denial of Service (DoS), or potentially expose sensitive memory contents."], "name": "CVE-2026-98168", "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": "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": "Fix deferred", "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": "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-2026-98168\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98168\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98168.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[48ca7139ab7f0bbed95ff7a901ea497017769657,3d67f155fe5813cfb02a551a9a12d6ea06a902e9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[56e84c64fc257a95728ee73165456b025c48d408,d1152c96a3002e3df6b9a5b007cecaa7b19b4f79)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[56e84c64fc257a95728ee73165456b025c48d408,8dc5db3a0e583ea8d31d0613cefd99e93e095c3c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[56e84c64fc257a95728ee73165456b025c48d408,5f0306e731e2f46e91419eae57eee3a241c055e0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "848d78e3625f15de09d34a562dc49a98b78a62f3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "c13b779d26b3702fba8f7d5fe757aba5bda85fd0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.34,6.12.112)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.94,6.7.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.15.3,6.16.0)"}}], "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": "6.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.16)"}}, {"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": "2026-10-06T13:15:15.868281+00:00", "updated": "2026-10-07T06:45:13.463033+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}