CVE-2026-98057 (GCVE-0-2026-98057)
Vulnerability from cvelistv5
Published
2026-09-25 10:24
Modified
2026-10-19 09:13
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Add checking nr_subbufs to persistent ring buffer validation Sashiko reported that the code was using meta->nr_subbufs without making sure that it matched the nr_pages + 1 on data that was assuming the two were the same. Add a check to the persistent ring buffer validation code to make sure that the saved nr_subbufs matches what we expect.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3ec743d558f111d8999aea24577ba66c65ee2eeb
Version: f5b95f1fa2ef3a03f49eeec658ba97e721412b32
Version: f5b95f1fa2ef3a03f49eeec658ba97e721412b32
Version: f5b95f1fa2ef3a03f49eeec658ba97e721412b32
Version: 0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf
Version: 6.12.16   ≤
Version: 6.13.4   ≤
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta-\u003enr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect."
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        "dateUpdated": "2026-10-19T09:13:03.914Z",
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    "datePublished": "2026-09-25T10:24:03.541Z",
    "dateReserved": "2026-09-25T10:19:56.072Z",
    "dateUpdated": "2026-10-19T09:13:03.914Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}


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