Vulnerability-Lookup

FKIE_CVE-2026-46046

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all() The commit c8e008b60492 ("ext4: ignore xattrs past end") introduced a refcount leak in when block_csum is false. ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to get iloc.bh, but never releases it with brelse().

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()\n\nThe commit c8e008b60492 (\"ext4: ignore xattrs past end\")\nintroduced a refcount leak in when block_csum is false.\n\next4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to\nget iloc.bh, but never releases it with brelse()."
    }
  ],
  "id": "CVE-2026-46046",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:24.083",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2026-46046 (GCVE-0-2026-46046)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-05-27 12:57

Title

ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()

Summary

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/1bc1107a3a403a6d4…
https://git.kernel.org/stable/c/097227f1ffe1a85bc…
https://git.kernel.org/stable/c/1e6b0a69bf2c9c819…
https://git.kernel.org/stable/c/f072906688933bf47…
https://git.kernel.org/stable/c/77d059519382bd662…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 362a90cecd36e8a5c415966d0b75b04a0270e4dd , < 1bc1107a3a403a6d440673ed6666f7b07ef868a8 (git) Affected: eb59cc31b6ea076021d14b04e7faab1636b87d0e , < 097227f1ffe1a85bc3c359f81c71e3d40e06e920 (git) Affected: c8e008b60492cf6fd31ef127aea6d02fd3d314cd , < 1e6b0a69bf2c9c819255c7566e4355536d81d9cf (git) Affected: c8e008b60492cf6fd31ef127aea6d02fd3d314cd , < f072906688933bf47fabbaf63560be03357c8298 (git) Affected: c8e008b60492cf6fd31ef127aea6d02fd3d314cd , < 77d059519382bd66283e6a4e83ee186e87e7708f (git) Affected: 6aff941cb0f7d0c897c3698ad2e30672709135e3 (git) Affected: 76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 (git) Affected: f737418b6de31c962c7192777ee4018906975383 (git) Affected: cf9291a3449b04688b81e32621e88de8f4314b54 (git) Affected: 3bc6317033f365ce578eb6039445fb66162722fd (git) Affected: 836e625b03a666cf93ff5be328c8cb30336db872 (git) Affected: 6.6.88 , < 6.6.140 (semver) Affected: 6.12.24 , < 6.12.86 (semver) Affected: 5.4.293 , < 5.5 (semver) Affected: 5.10.237 , < 5.11 (semver) Affected: 5.15.181 , < 5.16 (semver) Affected: 6.1.135 , < 6.2 (semver) Affected: 6.13.12 , < 6.14 (semver) Affected: 6.14.3 , < 6.15 (semver)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/xattr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1bc1107a3a403a6d440673ed6666f7b07ef868a8",
              "status": "affected",
              "version": "362a90cecd36e8a5c415966d0b75b04a0270e4dd",
              "versionType": "git"
            },
            {
              "lessThan": "097227f1ffe1a85bc3c359f81c71e3d40e06e920",
              "status": "affected",
              "version": "eb59cc31b6ea076021d14b04e7faab1636b87d0e",
              "versionType": "git"
            },
            {
              "lessThan": "1e6b0a69bf2c9c819255c7566e4355536d81d9cf",
              "status": "affected",
              "version": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd",
              "versionType": "git"
            },
            {
              "lessThan": "f072906688933bf47fabbaf63560be03357c8298",
              "status": "affected",
              "version": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd",
              "versionType": "git"
            },
            {
              "lessThan": "77d059519382bd66283e6a4e83ee186e87e7708f",
              "status": "affected",
              "version": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6aff941cb0f7d0c897c3698ad2e30672709135e3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f737418b6de31c962c7192777ee4018906975383",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cf9291a3449b04688b81e32621e88de8f4314b54",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3bc6317033f365ce578eb6039445fb66162722fd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "836e625b03a666cf93ff5be328c8cb30336db872",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.140",
              "status": "affected",
              "version": "6.6.88",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.86",
              "status": "affected",
              "version": "6.12.24",
              "versionType": "semver"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.293",
              "versionType": "semver"
            },
            {
              "lessThan": "5.11",
              "status": "affected",
              "version": "5.10.237",
              "versionType": "semver"
            },
            {
              "lessThan": "5.16",
              "status": "affected",
              "version": "5.15.181",
              "versionType": "semver"
            },
            {
              "lessThan": "6.2",
              "status": "affected",
              "version": "6.1.135",
              "versionType": "semver"
            },
            {
              "lessThan": "6.14",
              "status": "affected",
              "version": "6.13.12",
              "versionType": "semver"
            },
            {
              "lessThan": "6.15",
              "status": "affected",
              "version": "6.14.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/xattr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "6.6.88",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.86",
                  "versionStartIncluding": "6.12.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.4",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1-rc1",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.4.293",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.10.237",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.15.181",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.1.135",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.13.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.14.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()\n\nThe commit c8e008b60492 (\"ext4: ignore xattrs past end\")\nintroduced a refcount leak in when block_csum is false.\n\next4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to\nget iloc.bh, but never releases it with brelse()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:57:02.610Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920"
        },
        {
          "url": "https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298"
        },
        {
          "url": "https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f"
        }
      ],
      "title": "ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46046",
    "datePublished": "2026-05-27T12:57:02.610Z",
    "dateReserved": "2026-05-13T15:03:33.094Z",
    "dateUpdated": "2026-05-27T12:57:02.610Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

FKIE_CVE-2026-46046

CVE-2026-46046 (GCVE-0-2026-46046)

Tags

Sightings

Nomenclature