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CVE-2023-53681 (GCVE-0-2023-53681)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:21 – Updated: 2026-05-11 19:49
VLAI
Title
bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent
Summary
In the Linux kernel, the following vulnerability has been resolved: bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent In some specific situations, the return value of __bch_btree_node_alloc may be NULL. This may lead to a potential NULL pointer dereference in caller function like a calling chain : btree_split->bch_btree_node_alloc->__bch_btree_node_alloc. Fix it by initializing the return value in __bch_btree_node_alloc.
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 CPE status
Linux Linux Affected: cafe563591446cf80bfbc2fe3bc72a2e36cf1060 , < 587b4e8bb5dac682f09280ab35db4632b29d5ac4 (git)
Affected: cafe563591446cf80bfbc2fe3bc72a2e36cf1060 , < b070f29a61436f6f8a2e3abc7ea4f4be81695198 (git)
Affected: cafe563591446cf80bfbc2fe3bc72a2e36cf1060 , < a4405f6ee03323410d7b10966fd67b35f71b1944 (git)
Affected: cafe563591446cf80bfbc2fe3bc72a2e36cf1060 , < f67b0e3081f2a24170280a33ac66f6b112083c03 (git)
Affected: cafe563591446cf80bfbc2fe3bc72a2e36cf1060 , < 7ecea5ce3dc17339c280c75b58ac93d8c8620d9f (git)
Affected: cafe563591446cf80bfbc2fe3bc72a2e36cf1060 , < 4514847aee18d9391a0cf3aad75d3567c72795a4 (git)
Affected: cafe563591446cf80bfbc2fe3bc72a2e36cf1060 , < 80fca8a10b604afad6c14213fdfd816c4eda3ee4 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 4.19.291 , ≤ 4.19.* (semver)
Unaffected: 5.4.253 , ≤ 5.4.* (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:19:20+00:00",
      "cve": "CVE-2023-53681",
      "id": "CVE-2023-53681",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53681.json",
      "version": "3"
    },
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      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T16:46:13Z",
      "cve": "CVE-2023-53681",
      "id": "CVE-2023-53681",
      "initial_release_date": "2025-10-08T23:29:59Z",
      "product_status:known_affected": "550",
      "product_status:known_not_affected": "26",
      "product_status:recommended": "543",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53681",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53681.json",
      "version": "50"
    }
  }
}



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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

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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.