CVE-2021-25902: Glsl layout Double Free Vulnerability

HIGH
Advisory Identifier: GHSA-cx4j-fxr7-jxg8
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CVSS 7.5
CWE-415
Published
Advisory Summary

CVE-2021-25902 is a HIGH (CVSS 7.5) double free vulnerability (CWE-415: Double Free) affecting Glsl layout libraries in the crates.io ecosystem. The issue involves double free in glsl-layout. Remediation is available by upgrading affected packages to version 0.4.0.

CVE-2021-25902 at a Glance

CVE Identifier CVE-2021-25902
GHSA Identifier GHSA-cx4j-fxr7-jxg8
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-415: Double Free
Affected Product Glsl layout
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2021-25902

To remediate this vulnerability, upgrade all affected Glsl layout dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

glsl-layout fixed: 0.4.0 
Upgrade glsl-layout to 0.4.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for glsl-layout

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-25902, inspect your project dependencies for Glsl layout:

inspect dependencies for glsl-layout

Analyze the terminal output to locate any version of Glsl layout in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-415: Double Free, where the product calls free() twice on the same memory address. In Glsl layout, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Affected versions of this crate did not guard against panic within the user-provided function f (2nd parameter of fn map_array), and thus panic within f causes double drop of a single object. The flaw was corrected in the 0.4.0 release by wrapping the object vulnerable to a double drop within ManuallyDrop<T>.

CVE-2021-25902 Affected Glsl layout Versions

1 component(s)
Fixed Versions:
0.4.0
Product / Package Ecosystem Affected Versions Fixed Version
glsl-layout
 crates.io
< 0.4.0
0.4.0

References

NVD — CVE-2021-25902 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-25902
Glsl layout Source Repository REPOSITORY
https://github.com/rustgd/glsl-layout/pull/10
Glsl layout Source Repository REPOSITORY
https://github.com/rustgd/glsl-layout
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0005.html

Frequently Asked Questions

What is CVE-2021-25902?
CVE-2021-25902 is a security vulnerability in Glsl layout involving Double free in glsl-layout under CWE-415: Double Free.
Which Glsl layout versions are affected?
Affected versions include releases prior to 0.4.0 across affected packages: glsl-layout.
What version fixes CVE-2021-25902?
Upgrading to 0.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is glsl-layout affected?
Yes, glsl-layout is affected in releases prior to 0.4.0. Upgrade your dependency to 0.4.0 or later.
What is the CVSS score of CVE-2021-25902?
CVE-2021-25902 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2021-25902?
CVE-2021-25902 is classified under CWE-415: Double Free (The product calls free() twice on the same memory address.).
How can I check crates.io dependencies for CVE-2021-25902?
Run the dependency tree command: 'inspect dependencies for glsl-layout'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cx4j-fxr7-jxg8",
  "modified" : "2023-06-13T18:09:24Z",
  "published" : "2021-08-25T20:53:01Z",
  "aliases" : [ "CVE-2021-25902" ],
  "summary" : "Double free in glsl-layout",
  "details" : "Affected versions of this crate did not guard against panic within the user-provided function f (2nd parameter of fn map_array), and thus panic within f causes double drop of a single object.\n\nThe flaw was corrected in the 0.4.0 release by wrapping the object vulnerable to a double drop within ManuallyDrop<T>.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "glsl-layout"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-25902"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rustgd/glsl-layout/pull/10"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rustgd/glsl-layout"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0005.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-415" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-19T18:43:30Z",
    "nvd_published_at" : "2021-01-26T18:16:22Z"
  }
}