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CVE-2025-68820 (GCVE-0-2025-68820)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-09-08 08:43
VLAI
Title
ext4: xattr: fix null pointer deref in ext4_raw_inode()
Summary
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 16:55 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 , < b72a3476f0c97d02f63a6e9fff127348d55436f6 (git)
Affected: f737418b6de31c962c7192777ee4018906975383 , < 3d8d22e75f7edfa0b30ff27330fd6a1285d594c3 (git)
Affected: cf9291a3449b04688b81e32621e88de8f4314b54 , < 190ad0f22ba49f1101182b80e3af50ca2ddfe72f (git)
Affected: 362a90cecd36e8a5c415966d0b75b04a0270e4dd , < b5d942922182e82724b7152cb998f540132885ec (git)
Affected: eb59cc31b6ea076021d14b04e7faab1636b87d0e , < 5b154e901fda2e98570b8f426a481f5740097dc2 (git)
Affected: c8e008b60492cf6fd31ef127aea6d02fd3d314cd , < ce5f54c065a4a7cbb92787f4f140917112350142 (git)
Affected: c8e008b60492cf6fd31ef127aea6d02fd3d314cd , < b97cb7d6a051aa6ebd57906df0e26e9e36c26d14 (git)
Affected: 6aff941cb0f7d0c897c3698ad2e30672709135e3 (git)
Affected: 3bc6317033f365ce578eb6039445fb66162722fd (git)
Affected: 836e625b03a666cf93ff5be328c8cb30336db872 (git)
Affected: 5.10.237 , < 5.10.248 (semver)
Affected: 5.15.181 , < 5.15.198 (semver)
Affected: 6.1.135 , < 6.1.160 (semver)
Affected: 6.6.88 , < 6.6.120 (semver)
Affected: 6.12.24 , < 6.12.64 (semver)
Affected: 5.4.293 , < 5.5 (semver)
Affected: 6.13.12 , < 6.14 (semver)
Affected: 6.14.3 , < 6.15 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
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MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-06-16T16:55:32.991979Z\",\"id\":\"CVE-2025-68820\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/190ad0f22ba49f1101182b80e3af50ca2ddfe72f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3d8d22e75f7edfa0b30ff27330fd6a1285d594c3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5b154e901fda2e98570b8f426a481f5740097dc2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b5d942922182e82724b7152cb998f540132885ec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b72a3476f0c97d02f63a6e9fff127348d55436f6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b97cb7d6a051aa6ebd57906df0e26e9e36c26d14\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce5f54c065a4a7cbb92787f4f140917112350142\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-019113.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:11:29+00:00",
      "cve": "CVE-2025-68820",
      "id": "CVE-2025-68820",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_affected": "246",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ext4: xattr: fix null pointer deref in ext4_raw_inode()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68820.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T01:48:44Z",
      "cve": "CVE-2025-68820",
      "id": "CVE-2025-68820",
      "initial_release_date": "2026-01-18T00:24:13Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "560",
      "product_status:known_not_affected": "208",
      "product_status:recommended": "289",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-68820",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-68820.json",
      "version": "31"
    },
    "vulnrichment": {
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\"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\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b72a3476f0c97d02f63a6e9fff127348d55436f6\"}, {\"url\": \"https://git.kernel.org/stable/c/3d8d22e75f7edfa0b30ff27330fd6a1285d594c3\"}, {\"url\": \"https://git.kernel.org/stable/c/190ad0f22ba49f1101182b80e3af50ca2ddfe72f\"}, {\"url\": \"https://git.kernel.org/stable/c/b5d942922182e82724b7152cb998f540132885ec\"}, {\"url\": \"https://git.kernel.org/stable/c/5b154e901fda2e98570b8f426a481f5740097dc2\"}, {\"url\": \"https://git.kernel.org/stable/c/ce5f54c065a4a7cbb92787f4f140917112350142\"}, {\"url\": \"https://git.kernel.org/stable/c/b97cb7d6a051aa6ebd57906df0e26e9e36c26d14\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: xattr: fix null pointer deref in ext4_raw_inode()\\n\\nIf ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED),\\niloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all()\\nlacks error checking, this will lead to a null pointer dereference\\nin ext4_raw_inode(), called right after ext4_get_inode_loc().\\n\\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.248\", \"versionStartIncluding\": \"5.10.237\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.198\", \"versionStartIncluding\": \"5.15.181\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.160\", \"versionStartIncluding\": \"6.1.135\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.120\", \"versionStartIncluding\": \"6.6.88\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.64\", \"versionStartIncluding\": \"6.12.24\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.3\", \"versionStartIncluding\": \"6.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19\", \"versionStartIncluding\": \"6.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.4.293\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.13.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.14.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T16:02:59.512Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-68820\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-08T08:43:39.059Z\", \"dateReserved\": \"2025-12-24T10:30:51.048Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-01-13T15:29:23.351Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.