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CVE-2025-22019 (GCVE-0-2025-22019)

Vulnerability from cvelistv5 – Published: 2025-04-16 10:20 – Updated: 2026-08-05 11:56
VLAI
Title
bcachefs: bch2_ioctl_subvolume_destroy() fixes
Summary
In the Linux kernel, the following vulnerability has been resolved: bcachefs: bch2_ioctl_subvolume_destroy() fixes bch2_evict_subvolume_inodes() was getting stuck - due to incorrectly pruning the dcache. Also, fix missing permissions checks.
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a , < 9e6e83e1e2d01b99e70cd7812d7f758a8def9fc8 (git)
Affected: 1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a , < 82383abd39abd635511b8956284a5cc8134c4dc1 (git)
Affected: 1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a , < 558317a5c61045d460a37372181e7b43c0c002bb (git)
Affected: 1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a , < 707549600c4a012ed71c0204a7992a679880bf33 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.12.22 , ≤ 6.12.* (semver)
Unaffected: 6.13.10 , ≤ 6.13.* (semver)
Unaffected: 6.14.2 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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      "affected": [
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          "product": "Linux",
          "programFiles": [
            "fs/bcachefs/fs-ioctl.c"
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          "vendor": "Linux",
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              "versionType": "semver"
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              "version": "6.15",
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbcachefs: bch2_ioctl_subvolume_destroy() fixes\n\nbch2_evict_subvolume_inodes() was getting stuck - due to incorrectly\npruning the dcache.\n\nAlso, fix missing permissions checks."
        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached through `ioctl(BCH_IOCTL_SUBVOLUME_DESTROY)` on any open file descriptor belonging to a mounted bcachefs filesystem, which requires local access to the system. There is no network-facing path into `bch2_fs_file_ioctl()`.\nAC:L - The attacker deterministically triggers both defects with a single ioctl call \u2014 no race, no memory-layout dependence, no timing window; the dcache state that wedges `bch2_evict_subvolume_inodes()` is created by the attacker simply by walking into the subvolume beforehand. No conditions lie outside the attacker\u0027s control.\nPR:L - `BCH_IOCTL_SUBVOLUME_DESTROY` has no `capable()` check and, before this fix, no `inode_permission()` check, so an ordinary unprivileged local user needs only an fd on the bcachefs mount plus search (`MAY_EXEC`) permission along the path to the victim subvolume. No CAP_SYS_ADMIN, no user-namespace trick, and no ownership of or write access to the target is required.\nUI:N - The attacker issues the ioctl directly with no action by any other user; the mounted bcachefs filesystem is an ambient system configuration, not a victim-performed step at exploit time.\nS:U - The vulnerable code and the impacted resources (kernel filesystem state, on-disk subvolume data) are managed by the same security authority \u2014 the kernel. This is a standard in-kernel DAC-bypass/DoS with no VM, IOMMU, or sandbox boundary crossed.\nC:L - There is no direct arbitrary-read primitive, but the DAC bypass has bounded disclosure consequences: after destroying a root- or other-user-owned subvolume in a directory the attacker can write to, the attacker can recreate the path and have a privileged process deposit sensitive data into attacker-controlled storage, and the non-invalidated dcache subtree leaves stale dentries/inodes referencing a freed subvolume ID that can be reused by another user\u0027s newly created subvolume.\nI:H - An unprivileged user can permanently destroy any subvolume they can merely traverse to \u2014 including root-owned subvolumes and other users\u0027 mode-0700 subvolumes \u2014 bypassing all ownership, write-permission, sticky-bit and non-empty-directory protections, which is unauthorized destruction of arbitrary data on the filesystem. The stale, still-hashed dentry subtree over a deleted subvolume additionally permits writes through inodes whose subvolume ID may be reused.\nA:H - The `d_delete()` bug leaves `bch2_evict_subvolume_inodes()` stuck in `TASK_UNINTERRUPTIBLE`, producing an unkillable D-state kworker that holds `BCH_WRITE_REF_snapshot_delete_pagecache` forever \u2014 unmount and read-only transitions hang, all further subvolume deletions stall, and recovery requires a reboot. Independently, arbitrary destruction of subvolumes (e.g. one holding `/home` or a database) is total loss of the affected data."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:56:01.490Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
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          "url": "https://git.kernel.org/stable/c/82383abd39abd635511b8956284a5cc8134c4dc1"
        },
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          "url": "https://git.kernel.org/stable/c/558317a5c61045d460a37372181e7b43c0c002bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/707549600c4a012ed71c0204a7992a679880bf33"
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      "title": "bcachefs: bch2_ioctl_subvolume_destroy() fixes",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22019",
    "datePublished": "2025-04-16T10:20:36.342Z",
    "dateReserved": "2024-12-29T08:45:45.806Z",
    "dateUpdated": "2026-08-05T11:56:01.490Z",
    "state": "PUBLISHED"
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      "date": "2026-09-15",
      "epss": "0.00195",
      "percentile": "0.09443"
    },
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Tambi\u00e9n se corrigen las comprobaciones de permisos que faltaban.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/bcachefs/fs-ioctl.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a\",\"lessThan\":\"9e6e83e1e2d01b99e70cd7812d7f758a8def9fc8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a\",\"lessThan\":\"82383abd39abd635511b8956284a5cc8134c4dc1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a\",\"lessThan\":\"558317a5c61045d460a37372181e7b43c0c002bb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a\",\"lessThan\":\"707549600c4a012ed71c0204a7992a679880bf33\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/bcachefs/fs-ioctl.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.22\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13.10\",\"lessThanOrEqual\":\"6.13.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14.2\",\"lessThanOrEqual\":\"6.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H\",\"baseScore\":7.3,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.5},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.22\",\"matchCriteriaId\":\"9F037D3C-D627-4151-8546-1A2E3C2B38A8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.10\",\"matchCriteriaId\":\"E9410CA0-CED8-49BE-9DB4-856654736C32\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.14\",\"versionEndExcluding\":\"6.14.2\",\"matchCriteriaId\":\"FADAE5D8-4808-442C-B218-77B2CE8780A0\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/558317a5c61045d460a37372181e7b43c0c002bb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/707549600c4a012ed71c0204a7992a679880bf33\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/82383abd39abd635511b8956284a5cc8134c4dc1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9e6e83e1e2d01b99e70cd7812d7f758a8def9fc8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:22:57+00:00",
      "cve": "CVE-2025-22019",
      "id": "CVE-2025-22019",
      "initial_release_date": "2025-04-16T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bcachefs: bch2_ioctl_subvolume_destroy() fixes",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-22019.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-01T13:51:36Z",
      "cve": "CVE-2025-22019",
      "id": "CVE-2025-22019",
      "initial_release_date": "2025-04-18T01:24:11Z",
      "product_status:known_not_affected": "568",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-22019",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-22019.json",
      "version": "10"
    }
  }
}



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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.


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