Skip to content
Heist/ feed
High

ocfs2: reject dinodes with non-canonical i_mode type

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: ocfs2: reject dinodes with non-canonical i_mode type Patch series "ocfs2: harden inode validators against forged metadata", v2. This series adds three structural checks to OCFS2 dinode validation so malformed on-disk fields are rejected before ocfs2_populate_inode() copies them into the in-core inode. The checks cover: - i_mode values whose type bits do not name a canonical POSIX file type; - non-device dinodes whose id1.dev1.i_rdev field is non-zero; and - non-inline dinodes that claim non-zero i_size while i_clusters is zero, covering directories unconditionally and regular files on non-sparse volumes. The normal read path reports these through ocfs2_error(), matching the existing suballoc-slot, inline-data, chain-list, and refcount checks. The online filecheck path uses the same structural predicates but keeps its own reporting contract, returning OCFS2_FILECHECK_ERR_INVALIDINO instead of calling ocfs2_error(). This patch (of 3): ocfs2_validate_inode_block() currently accepts any non-zero i_mode value. ocfs2_populate_inode() then copies that mode verbatim into inode->i_mode and dispatches on i_mode & S_IFMT to the file/dir/symlink/special_file iops; an unrecognised type falls through to ocfs2_special_file_iops and init_special_inode(). Reject dinodes whose type bits do not name one of the seven canonical POSIX file types. Use fs_umode_to_ftype(), the same generic file-type conversion helper OCFS2 already u

Announced Source revision 1
Original source ↗

CVE-2026-72160

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-72160

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "b657c95c11088d77fc1bfc9c84d940f778bf9d12",
        "lessThan": "2e3aac33988ef4e4170141db8e995693ea38357c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b657c95c11088d77fc1bfc9c84d940f778bf9d12",
        "lessThan": "fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b657c95c11088d77fc1bfc9c84d940f778bf9d12",
        "lessThan": "157d31ef45038d89cd19620105e082d43c8e41e0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b657c95c11088d77fc1bfc9c84d940f778bf9d12",
        "lessThan": "a5b555bcabbb0aff8745ad181768eaf9d964c1ee",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b657c95c11088d77fc1bfc9c84d940f778bf9d12",
        "lessThan": "82afe13558354390d8a592a5334d5f4fd72c0e5c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b657c95c11088d77fc1bfc9c84d940f778bf9d12",
        "lessThan": "4db3b6a2a8ecf2a89d26a4090ace4072c6fad050",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b657c95c11088d77fc1bfc9c84d940f778bf9d12",
        "lessThan": "b858f2d57cfc9d57ce61b86051d603dc0ebccd40",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b657c95c11088d77fc1bfc9c84d940f778bf9d12",
        "lessThan": "5366a017099c6a3c443be908a05f26fd72af12a1",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "fs/ocfs2/inode.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.29"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.29",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.261",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.97",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.40",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/ocfs2/inode.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-72160

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#32961 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement