CVE-2026-68422 (GCVE-0-2026-68422)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:04 – Updated: 2026-08-19 16:35
VLAI
Title
btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < f89df93e8aefa4c1c813f835559f2ac727f79766 (git)
Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < 3f586b4c92e4272fcd01bf0db0590b63acf3e85b (git)
Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < b3d39b03799600c76c33486e2d29b73a771023db (git)
Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < 72f673d1c1deb819554d3e7e154f6d84301eb735 (git)
Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < 60a23d4ea169e27403f3bb023bb98036797c0206 (git)
Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < 7591d1727067d6063247901ad25c4bdc4e5695c4 (git)
Affected: 24213fa46c7080c31d79aa2e3e2f0d9480cab700 , < ce6050bafb4e33377dc17fcc357736bfc351180c (git)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:35:17.540Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-08-10T12:04:42.949Z",
    "dateReserved": "2026-07-30T09:28:09.392Z",
    "dateUpdated": "2026-08-19T16:35:17.540Z",
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-12T19:08:19+00:00",
      "cve": "CVE-2026-68422",
      "id": "CVE-2026-68422",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "200",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68422.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-11T23:45:47Z",
      "cve": "CVE-2026-68422",
      "id": "CVE-2026-68422",
      "initial_release_date": "2026-08-11T23:45:47Z",
      "product_status:known_affected": "247",
      "product_status:known_not_affected": "49",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68422",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68422.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.