CVE-2026-45960 (GCVE-0-2026-45960)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:18 – Updated: 2026-05-27 12:18
VLAI
Title
hfsplus: return error when node already exists in hfs_bnode_create
Summary
In the Linux kernel, the following vulnerability has been resolved: hfsplus: return error when node already exists in hfs_bnode_create When hfs_bnode_create() finds that a node is already hashed (which should not happen in normal operation), it currently returns the existing node without incrementing its reference count. This causes a reference count inconsistency that leads to a kernel panic when the node is later freed in hfs_bnode_put(): kernel BUG at fs/hfsplus/bnode.c:676! BUG_ON(!atomic_read(&node->refcnt)) This scenario can occur when hfs_bmap_alloc() attempts to allocate a node that is already in use (e.g., when node 0's bitmap bit is incorrectly unset), or due to filesystem corruption. Returning an existing node from a create path is not normal operation. Fix this by returning ERR_PTR(-EEXIST) instead of the node when it's already hashed. This properly signals the error condition to callers, which already check for IS_ERR() return values.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 634725a92938b0f282b17cec0b007dca77adebd2 , < 1ca428769cb4737a25bd32fb4d1573cc09eeaeef (git)
Affected: 634725a92938b0f282b17cec0b007dca77adebd2 , < 507a1de58c21c95ad7c44afccaf1222d1c42246b (git)
Affected: 634725a92938b0f282b17cec0b007dca77adebd2 , < 986455135b95f32c1f142068e451098fc751749e (git)
Affected: 634725a92938b0f282b17cec0b007dca77adebd2 , < 7b57ada854b32310f224abd61bcfec2d5790ff0a (git)
Affected: 634725a92938b0f282b17cec0b007dca77adebd2 , < 51838112d9c22502333c3085ca0c0d691e7093c6 (git)
Affected: 634725a92938b0f282b17cec0b007dca77adebd2 , < 2e6ff6a6fc69cc17ed10c9cb6242935d52acd52d (git)
Affected: 634725a92938b0f282b17cec0b007dca77adebd2 , < 2e9185a42e0e237c74435fd092b7c34537c62156 (git)
Affected: 634725a92938b0f282b17cec0b007dca77adebd2 , < d8a73cc46c8462a969a7516131feb3096f4c49d3 (git)
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Linux Linux Affected: 2.6.16
Unaffected: 0 , < 2.6.16 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:18:20+00:00",
      "cve": "CVE-2026-45960",
      "id": "CVE-2026-45960",
      "initial_release_date": "2026-05-27T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "260",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: hfsplus: return error when node already exists in hfs_bnode_create",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45960.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-05-31T01:34:16Z",
      "cve": "CVE-2026-45960",
      "id": "CVE-2026-45960",
      "initial_release_date": "2026-05-28T03:55:24Z",
      "product_status:known_affected": "227",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-45960",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-45960.json",
      "version": "4"
    }
  }
}



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Tags
Taxonomy of the tags.





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.