Vulnerability-Lookup

GHSA-M5XH-RJFQ-CC6F

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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().

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46046"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:24Z",
    "severity": null
  },
  "details": "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": "GHSA-m5xh-rjfq-cc6f",
  "modified": "2026-05-27T15:33:22Z",
  "published": "2026-05-27T15:33:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46046"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

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().

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)

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{
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "fs/ext4/xattr.c"
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            },
            {
              "status": "affected",
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              "versionType": "git"
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              "status": "affected",
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              "status": "affected",
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              "versionType": "semver"
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              "versionType": "semver"
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            {
              "lessThan": "5.11",
              "status": "affected",
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              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.86",
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
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        }
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                {
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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.

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GHSA-M5XH-RJFQ-CC6F

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

Tags

Sightings

Nomenclature