CVE-2026-98907

Full vulnerability record from the local CVENow database.

Description

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

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-10-23 12:18:24.793000

Last modified

2026-10-26 07:17:16.060000

View original CVE JSON

{
  "id": "CVE-2026-98907",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-10-23T12:18:24.793",
  "lastModified": "2026-10-26T07:17:16.060",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/btrfs/zoned.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3c20917120ce61f2a123ca0810293872f4c6b5a4",
              "lessThan": "80cd97c5e90096d040a623851795eac92fbd0ff1",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "3c20917120ce61f2a123ca0810293872f4c6b5a4",
              "lessThan": "123b9a545f4d0348e81f558a032bf2a93ee5722f",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "fs/btrfs/zoned.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.15",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.53",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/123b9a545f4d0348e81f558a032bf2a93ee5722f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/80cd97c5e90096d040a623851795eac92fbd0ff1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}