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ext4: xattr: fix null pointer deref in ext4_raw_inode()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: ext4: xattr: fix null pointer deref in ext4_raw_inode() If ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED), iloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all() lacks error checking, this will lead to a null pointer dereference in ext4_raw_inode(), called right after ext4_get_inode_loc(). Found by Linux Verification Center (linuxtesting.org) with SVACE.

Announced Source revision 1
Original source ↗

CVE-2025-68820

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-2025-68820

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": "76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3",
        "lessThan": "b72a3476f0c97d02f63a6e9fff127348d55436f6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f737418b6de31c962c7192777ee4018906975383",
        "lessThan": "3d8d22e75f7edfa0b30ff27330fd6a1285d594c3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cf9291a3449b04688b81e32621e88de8f4314b54",
        "lessThan": "190ad0f22ba49f1101182b80e3af50ca2ddfe72f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "362a90cecd36e8a5c415966d0b75b04a0270e4dd",
        "lessThan": "b5d942922182e82724b7152cb998f540132885ec",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "eb59cc31b6ea076021d14b04e7faab1636b87d0e",
        "lessThan": "5b154e901fda2e98570b8f426a481f5740097dc2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd",
        "lessThan": "ce5f54c065a4a7cbb92787f4f140917112350142",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd",
        "lessThan": "b97cb7d6a051aa6ebd57906df0e26e9e36c26d14",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6aff941cb0f7d0c897c3698ad2e30672709135e3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3bc6317033f365ce578eb6039445fb66162722fd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "836e625b03a666cf93ff5be328c8cb30336db872",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5.10.237",
        "lessThan": "5.10.248",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.15.181",
        "lessThan": "5.15.198",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.1.135",
        "lessThan": "6.1.160",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.6.88",
        "lessThan": "6.6.120",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.12.24",
        "lessThan": "6.12.64",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.4.293",
        "lessThan": "5.5",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.13.12",
        "lessThan": "6.14",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.14.3",
        "lessThan": "6.15",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "fs/ext4/xattr.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.15"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.15",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.248",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.198",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.160",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.120",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.64",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.3",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/ext4/xattr.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-68820

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#39135 · Revision 1
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Publisher date
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