CVE-2026-98907 (GCVE-0-2026-98907)

Vulnerability from cvelistv5 – Published: 2026-10-23 11:54 – Updated: 2026-10-26 06:56
VLAI
Title
btrfs: protect sb_write_pointer() with invalidate lock
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: protect sb_write_pointer() with invalidate lock sb_write_pointer() reads the super block from the block device page cache using read_cache_page_gfp(). This has the same race with BLKBSZSET as the one fixed by commit 3f29d661e568 ("btrfs: sync read disk super and set block size"). Take the mapping invalidate lock around read_cache_page_gfp() to serialize the read against block size changes.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6848 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3c20917120ce61f2a123ca0810293872f4c6b5a4 , < 80cd97c5e90096d040a623851795eac92fbd0ff1 (git)
Affected: 3c20917120ce61f2a123ca0810293872f4c6b5a4 , < 123b9a545f4d0348e81f558a032bf2a93ee5722f (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "programFiles": [
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      "providerMetadata": {
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    "cveId": "CVE-2026-98907",
    "datePublished": "2026-10-23T11:54:44.224Z",
    "dateReserved": "2026-09-25T10:25:14.379Z",
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    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: protect sb_write_pointer() with invalidate lock\n\nsb_write_pointer() reads the super block from the block device page cache\nusing read_cache_page_gfp(). This has the same race with BLKBSZSET as the\none fixed by commit 3f29d661e568 (\"btrfs: sync read disk super and set\nblock size\").\n\nTake the mapping invalidate lock around read_cache_page_gfp() to\nserialize the read against block size changes."
          }
        ],
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        "metrics": {},
        "published": "2026-10-23T12:18:24.793",
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  }
}



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