FKIE_CVE-2026-68422

Vulnerability from fkie_nvd - Published: 2026-08-10 13:20 - Updated: 2026-08-19 17:20
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots() If we have an unexpected reloc_root for our root, we jump to the out label but never drop the reference we obtained for root, resulting in a leak. Add a missing btrfs_put_root() call.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f586b4c92e4272fcd01bf0db0590b63acf3e85b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60a23d4ea169e27403f3bb023bb98036797c0206
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72f673d1c1deb819554d3e7e154f6d84301eb735
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7591d1727067d6063247901ad25c4bdc4e5695c4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b3d39b03799600c76c33486e2d29b73a771023db
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce6050bafb4e33377dc17fcc357736bfc351180c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f89df93e8aefa4c1c813f835559f2ac727f79766
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/relocation.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f89df93e8aefa4c1c813f835559f2ac727f79766",
              "status": "affected",
              "version": "24213fa46c7080c31d79aa2e3e2f0d9480cab700",
              "versionType": "git"
            },
            {
              "lessThan": "3f586b4c92e4272fcd01bf0db0590b63acf3e85b",
              "status": "affected",
              "version": "24213fa46c7080c31d79aa2e3e2f0d9480cab700",
              "versionType": "git"
            },
            {
              "lessThan": "b3d39b03799600c76c33486e2d29b73a771023db",
              "status": "affected",
              "version": "24213fa46c7080c31d79aa2e3e2f0d9480cab700",
              "versionType": "git"
            },
            {
              "lessThan": "72f673d1c1deb819554d3e7e154f6d84301eb735",
              "status": "affected",
              "version": "24213fa46c7080c31d79aa2e3e2f0d9480cab700",
              "versionType": "git"
            },
            {
              "lessThan": "60a23d4ea169e27403f3bb023bb98036797c0206",
              "status": "affected",
              "version": "24213fa46c7080c31d79aa2e3e2f0d9480cab700",
              "versionType": "git"
            },
            {
              "lessThan": "7591d1727067d6063247901ad25c4bdc4e5695c4",
              "status": "affected",
              "version": "24213fa46c7080c31d79aa2e3e2f0d9480cab700",
              "versionType": "git"
            },
            {
              "lessThan": "ce6050bafb4e33377dc17fcc357736bfc351180c",
              "status": "affected",
              "version": "24213fa46c7080c31d79aa2e3e2f0d9480cab700",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/relocation.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()\n\nIf we have an unexpected reloc_root for our root, we jump to the out label\nbut never drop the reference we obtained for root, resulting in a leak.\nAdd a missing btrfs_put_root() call."
    }
  ],
  "id": "CVE-2026-68422",
  "lastModified": "2026-08-19T17:20:49.363",
  "metrics": {},
  "published": "2026-08-10T13:20:36.087",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3f586b4c92e4272fcd01bf0db0590b63acf3e85b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/60a23d4ea169e27403f3bb023bb98036797c0206"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/72f673d1c1deb819554d3e7e154f6d84301eb735"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7591d1727067d6063247901ad25c4bdc4e5695c4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b3d39b03799600c76c33486e2d29b73a771023db"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ce6050bafb4e33377dc17fcc357736bfc351180c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f89df93e8aefa4c1c813f835559f2ac727f79766"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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