{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-98125 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98125 is a medium-severity vulnerability in Linux kernel, published on 25 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-98125 and fix it if it is affected.\n\nWhat it is: CVE-2026-98125 is a medium-severity vulnerability in Linux kernel, published on 25 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-98125 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-98125/ (Markdown: https://insights.sbomify.com/CVE-2026-98125/index.md)","id":"CVE-2026-98125","markdown":"https://insights.sbomify.com/CVE-2026-98125/index.md","name":"CVE-2026-98125","record":{"aliases":["AZL-104277","BELL-CVE-2026-98125","DEBIAN-CVE-2026-98125","GHSA-mgrf-j38j-q2mg","UBUNTU-CVE-2026-98125"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel SMB client","requires_auth":"low_privilege","summary":"A local attacker can read stale data from the page cache after SMB insert/collapse range operations due to improper cache invalidation.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-669","name":"Incorrect Resource Transfer Between Spheres"}],"description":"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 \u003e\u003e /tmp/expected\n\n            cp /tmp/src \"$FILE\"\n\n            # Prime the page cache before moving data on the server.\n            cat \"$FILE\" \u003e /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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"smb/client: fix stale page cache in insert/collapse range","id":"CVE-2026-98125","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"smb/client: validate new EOF for zero range","id":"CVE-2026-98126"},"packages":[],"prev":{"headline":"smb/client: invalidate fscache for fallocate range operations","id":"CVE-2026-98124"},"products":["Linux"],"published":"2026-09-25","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-21","vendors":["Linux"]},"summary":"A local attacker can read stale data from the page cache after SMB insert/collapse range operations due to improper cache invalidation.","url":"https://insights.sbomify.com/CVE-2026-98125/"}