{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98125", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.318Z", "datePublished": "2026-09-25T10:36:07.163Z", "dateUpdated": "2026-10-21T12:54:36.373Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:54:36.373Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/client: fix stale page cache in insert/collapse range\n\nsmb3_insert_range() and smb3_collapse_range() use\ntruncate_pagecache_range() to invalidate the affected page cache.\nHowever, if off or old_eof is not page-aligned, the boundary pages are\nonly partially zeroed and remain uptodate. As a result, the client may\nreturn stale data after a successful insert/collapse range operation.\n\nFor example, with 4K pages:\n\n page 0 page 1 page 2\n 0------4K 4K------8K 8K------12K\n ^ ^\n off=2K old_eof=10K\n\nPage 1 is removed from the page cache, while the boundary pages are\nonly partially zeroed. After COPYCHUNK moves the data on the server,\nthese cached pages may still return stale data.\n\nThis can be reproduced on a CIFS mount:\n\n bash -c '\n FILE=/mnt/scratch/repro\n\n # Use a 6 KiB file so EOF is not page-aligned.\n dd if=/dev/urandom of=/tmp/src bs=1K count=6 status=none\n\n # Expected: a 4 KiB hole followed by the original data.\n rm -f /tmp/expected\n truncate -s 4K /tmp/expected\n cat /tmp/src >> /tmp/expected\n\n cp /tmp/src \"$FILE\"\n\n # Prime the page cache before moving data on the server.\n cat \"$FILE\" > /dev/null\n\n fallocate --insert-range -o 0 -l 4K \"$FILE\"\n\n if cmp -s /tmp/expected \"$FILE\"; then\n echo \"readback: OK\"\n else\n echo \"readback: STALE DATA\"\n fi\n '\n\nFix this by writing back dirty data and discarding the page cache from\nthe start of the page containing off to EOF before moving data on the\nserver."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2ops.c"], "versions": [{"version": "fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4", "lessThan": "52dd721b3de57e41261e08485b2bc62b22b80ebe", "status": "affected", "versionType": "git"}, {"version": "fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4", "lessThan": "76222e76d08fbae4092ee9da84ded2b4c24ee598", "status": "affected", "versionType": "git"}, {"version": "fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4", "lessThan": "01261a6fa48b62f5ead8e88aaca1e27cb9ab9032", "status": "affected", "versionType": "git"}, {"version": "49523a4732204bdacbf3941a016503ddb4ddb3b9", "status": "affected", "versionType": "git"}, {"version": "0cdde8460c304283d4ebe3f767a70215d1ab9d4e", "status": "affected", "versionType": "git"}, {"version": "5.19.12", "lessThan": "5.20", "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/smb2ops.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "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": "6.0", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/52dd721b3de57e41261e08485b2bc62b22b80ebe"}, {"url": "https://git.kernel.org/stable/c/76222e76d08fbae4092ee9da84ded2b4c24ee598"}, {"url": "https://git.kernel.org/stable/c/01261a6fa48b62f5ead8e88aaca1e27cb9ab9032"}], "title": "smb/client: fix stale page cache in insert/collapse range", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/client/smb2ops.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "52dd721b3de57e41261e08485b2bc62b22b80ebe", "status": "affected", "version": "fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4", "versionType": "git"}, {"lessThan": "76222e76d08fbae4092ee9da84ded2b4c24ee598", "status": "affected", "version": "fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4", "versionType": "git"}, {"lessThan": "01261a6fa48b62f5ead8e88aaca1e27cb9ab9032", "status": "affected", "version": "fa30a81f255a56cccd89552cd6ce7ea6e8d8acc4", "versionType": "git"}, {"status": "affected", "version": "49523a4732204bdacbf3941a016503ddb4ddb3b9", "versionType": "git"}, {"status": "affected", "version": "0cdde8460c304283d4ebe3f767a70215d1ab9d4e", "versionType": "git"}, {"lessThan": "5.20", "status": "affected", "version": "5.19.12", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/client/smb2ops.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.0"}, {"lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "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": "B9F7B410-020B-4CF1-96DA-7CFE097E00D3", "versionEndExcluding": "6.0", "versionStartIncluding": "5.19.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "DB94CEE5-D8B8-4B06-A3A8-0A9C090F5154", "versionEndExcluding": "6.6.160", "versionStartIncluding": "6.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CCD47D7A-463E-4E28-8B49-88D3A1E8406B", "versionEndExcluding": "7.2.7", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*", "matchCriteriaId": "7BE551E5-89CF-47A8-9B26-03CE727FBA37", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "F8446E87-F5F6-41CA-8201-BAE0F0CA6DD9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "8E5FB72F-67CE-43CC-83FE-541604D98182", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "3A0A7397-F5F8-4753-82DC-9A11288E696D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "E6DE049A-ABA8-41DD-988C-8C088358EE9B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.3:rc1:*:*:*:*:*:*", "matchCriteriaId": "11E35E1B-5DB4-4AB9-9706-CD73B799EADF", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/client: fix stale page cache in insert/collapse range\n\nsmb3_insert_range() and smb3_collapse_range() use\ntruncate_pagecache_range() to invalidate the affected page cache.\nHowever, if off or old_eof is not page-aligned, the boundary pages are\nonly partially zeroed and remain uptodate. As a result, the client may\nreturn stale data after a successful insert/collapse range operation.\n\nFor example, with 4K pages:\n\n page 0 page 1 page 2\n 0------4K 4K------8K 8K------12K\n ^ ^\n off=2K old_eof=10K\n\nPage 1 is removed from the page cache, while the boundary pages are\nonly partially zeroed. After COPYCHUNK moves the data on the server,\nthese cached pages may still return stale data.\n\nThis can be reproduced on a CIFS mount:\n\n bash -c '\n FILE=/mnt/scratch/repro\n\n # Use a 6 KiB file so EOF is not page-aligned.\n dd if=/dev/urandom of=/tmp/src bs=1K count=6 status=none\n\n # Expected: a 4 KiB hole followed by the original data.\n rm -f /tmp/expected\n truncate -s 4K /tmp/expected\n cat /tmp/src >> /tmp/expected\n\n cp /tmp/src \"$FILE\"\n\n # Prime the page cache before moving data on the server.\n cat \"$FILE\" > /dev/null\n\n fallocate --insert-range -o 0 -l 4K \"$FILE\"\n\n if cmp -s /tmp/expected \"$FILE\"; then\n echo \"readback: OK\"\n else\n echo \"readback: STALE DATA\"\n fi\n '\n\nFix this by writing back dirty data and discarding the page cache from\nthe start of the page containing off to EOF before moving data on the\nserver."}], "id": "CVE-2026-98125", "lastModified": "2026-10-22T16:20:13.427", "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": "2026-09-25T11:17:43.827", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/01261a6fa48b62f5ead8e88aaca1e27cb9ab9032"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/52dd721b3de57e41261e08485b2bc62b22b80ebe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/76222e76d08fbae4092ee9da84ded2b4c24ee598"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-669"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: smb/client: fix stale page cache in insert/collapse range", "id": "2541324", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541324"}, "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-524", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsmb/client: fix stale page cache in insert/collapse range\nsmb3_insert_range() and smb3_collapse_range() use\ntruncate_pagecache_range() to invalidate the affected page cache.\nHowever, if off or old_eof is not page-aligned, the boundary pages are\nonly partially zeroed and remain uptodate. As a result, the client may\nreturn stale data after a successful insert/collapse range operation.\nFor example, with 4K pages:\npage 0 page 1 page 2\n0------4K 4K------8K 8K------12K\n^ ^\noff=2K old_eof=10K\nPage 1 is removed from the page cache, while the boundary pages are\nonly partially zeroed. After COPYCHUNK moves the data on the server,\nthese cached pages may still return stale data.\nThis can be reproduced on a CIFS mount:\nbash -c '\nFILE=/mnt/scratch/repro\n# Use a 6 KiB file so EOF is not page-aligned.\ndd if=/dev/urandom of=/tmp/src bs=1K count=6 status=none\n# Expected: a 4 KiB hole followed by the original data.\nrm -f /tmp/expected\ntruncate -s 4K /tmp/expected\ncat /tmp/src >> /tmp/expected\ncp /tmp/src \"$FILE\"\n# Prime the page cache before moving data on the server.\ncat \"$FILE\" > /dev/null\nfallocate --insert-range -o 0 -l 4K \"$FILE\"\nif cmp -s /tmp/expected \"$FILE\"; then\necho \"readback: OK\"\nelse\necho \"readback: STALE DATA\"\nfi\n'\nFix this by writing back dirty data and discarding the page cache from\nthe start of the page containing off to EOF before moving data on the\nserver.", "A flaw was found in the Linux kernel's Server Message Block (SMB) client. This flaw allows a local user to read stale or inconsistent file data from a mounted network share. When modifying file ranges using insert or collapse operations, offsets that are not aligned with memory page boundaries fail to completely clear the local cache. Consequently, subsequent read operations can return outdated data rather than the updated file contents from the server."], "name": "CVE-2026-98125", "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": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98125\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98125\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98125.mbox"], "threat_severity": "Low"}