Common Weakness Enumeration

CWE-590

Allowed

Free of Memory not on the Heap

Abstraction: Variant · Status: Incomplete

API response cwe.mitre.org

The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc().

40 vulnerabilities reference this CWE, most recent first.

CVE-2021-39218 (GCVE-0-2021-39218)

Vulnerability from cvelistv5 – Published: 2021-09-17 20:10 – Updated: 2024-08-04 01:58
VLAI
Title
Out-of-bounds read/write and invalid free with `externref`s and GC safepoints in Wasmtime
Summary
Wasmtime is an open source runtime for WebAssembly & WASI. In Wasmtime from version 0.26.0 and before version 0.30.0 is affected by a memory unsoundness vulnerability. There was an invalid free and out-of-bounds read and write bug when running Wasm that uses `externref`s in Wasmtime. To trigger this bug, Wasmtime needs to be running Wasm that uses `externref`s, the host creates non-null `externrefs`, Wasmtime performs a garbage collection (GC), and there has to be a Wasm frame on the stack that is at a GC safepoint where there are no live references at this safepoint, and there is a safepoint with live references earlier in this frame's function. Under this scenario, Wasmtime would incorrectly use the GC stack map for the safepoint from earlier in the function instead of the empty safepoint. This would result in Wasmtime treating arbitrary stack slots as `externref`s that needed to be rooted for GC. At the *next* GC, it would be determined that nothing was referencing these bogus `externref`s (because nothing could ever reference them, because they are not really `externref`s) and then Wasmtime would deallocate them and run `<ExternRef as Drop>::drop` on them. This results in a free of memory that is not necessarily on the heap (and shouldn't be freed at this moment even if it was), as well as potential out-of-bounds reads and writes. Even though support for `externref`s (via the reference types proposal) is enabled by default, unless you are creating non-null `externref`s in your host code or explicitly triggering GCs, you cannot be affected by this bug. We have reason to believe that the effective impact of this bug is relatively small because usage of `externref` is currently quite rare. This bug has been patched and users should upgrade to Wasmtime version 0.30.0. If you cannot upgrade Wasmtime at this time, you can avoid this bug by disabling the reference types proposal by passing `false` to `wasmtime::Config::wasm_reference_types`.
Severity
6.3 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7637 records in the last 180 days details
References
Impacted products
Vendor Product Version
bytecodealliance wasmtime Affected: >= 0.26.0, <= 0.29.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-3939 (GCVE-0-2021-3939)

Vulnerability from cvelistv5 – Published: 2021-11-17 03:15 – Updated: 2024-09-16 18:02
VLAI
Title
Free of static data in accountsservice
Summary
Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_cb function. This is reachable via the SetLanguage dbus function. This is fixed in versions 0.6.55-0ubuntu12~20.04.5, 0.6.55-0ubuntu13.3, 0.6.55-0ubuntu14.1.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-590 - Free of Memory not on the Heap
Assigner
canonical CNA under the mitre root
CNA scorecard B 80/100 over 102 records in the last 180 days details
References
Impacted products
Vendor Product Version
Ubuntu accountsservice Affected: 0.6.55-0ubuntu12~20.04 , < 0.6.55-0ubuntu12~20.04.5 (custom)
Affected: 0.6.55-0ubuntu13 , < 0.6.55-0ubuntu13.3 (custom)
Affected: 0.6.55-0ubuntu14 , < 0.6.55-0ubuntu14.1 (custom)
Create a notification for this product.
Date Public
2021-11-16 00:00
Credits
Kevin Backhouse
Show details on NVD website
To clipboard 

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CVE-2020-6016 (GCVE-0-2020-6016)

Vulnerability from cvelistv5 – Published: 2020-11-18 14:11 – Updated: 2024-08-04 08:47
VLAI
Summary
Valve's Game Networking Sockets prior to version v1.2.0 improperly handles unreliable segments with negative offsets in function SNP_ReceiveUnreliableSegment(), leading to a Heap-Based Buffer Underflow and a free() of memory not from the heap, resulting in a memory corruption and probably even a remote code execution.
Severity
No CVSS data available.
CWE
  • CWE-590 - Free of Memory not on the Heap
Assigner
checkpoint CNA under the mitre root
CNA scorecard C 66/100 over 17 records in the last 180 days details
References
Impacted products
Vendor Product Version
n/a Game Networking Sockets Affected: All versions prior to v1.2.0
Show details on NVD website
To clipboard 

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        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@checkpoint.com",
          "ID": "CVE-2020-6016",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Game Networking Sockets",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions prior to v1.2.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Valve\u0027s Game Networking Sockets prior to version v1.2.0 improperly handles unreliable segments with negative offsets in function SNP_ReceiveUnreliableSegment(), leading to a Heap-Based Buffer Underflow and a free() of memory not from the heap, resulting in a memory corruption and probably even a remote code execution."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-590: Free of Memory not on the Heap"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43",
              "refsource": "MISC",
              "url": "https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43"
            },
            {
              "name": "https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/",
              "refsource": "MISC",
              "url": "https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "897c38be-0345-43cd-b6cf-fe179e0c4f45",
    "assignerShortName": "checkpoint",
    "cveId": "CVE-2020-6016",
    "datePublished": "2020-11-18T14:11:49.000Z",
    "dateReserved": "2020-01-07T00:00:00.000Z",
    "dateUpdated": "2024-08-04T08:47:41.048Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-2648-39FC-PR84

Vulnerability from github – Published: 2025-09-09 18:31 – Updated: 2025-09-09 18:31
VLAI
Details

Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2025-54899"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-590"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-09T17:16:00Z",
    "severity": "HIGH"
  },
  "details": "Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.",
  "id": "GHSA-2648-39fc-pr84",
  "modified": "2025-09-09T18:31:22Z",
  "published": "2025-09-09T18:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54899"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54899"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-2WC8-2PC2-V659

Vulnerability from github – Published: 2025-06-10 03:30 – Updated: 2025-06-10 03:30
VLAI
Details

SAP MDM Server ReadString function allows an attacker to send specially crafted packets which could trigger a memory read access violation in the server process that would then fail and exit unexpectedly causing high impact on availability with no impact on confidentiality and integrity of the application.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2025-42994"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-590"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-10T01:15:22Z",
    "severity": "HIGH"
  },
  "details": "SAP MDM Server ReadString function allows an attacker to send specially crafted packets which could trigger a memory read access violation in the server process that would then fail and exit unexpectedly causing high impact on availability with no impact on confidentiality and integrity of the application.",
  "id": "GHSA-2wc8-2pc2-v659",
  "modified": "2025-06-10T03:30:29Z",
  "published": "2025-06-10T03:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-42994"
    },
    {
      "type": "WEB",
      "url": "https://me.sap.com/notes/3610006"
    },
    {
      "type": "WEB",
      "url": "https://url.sap/sapsecuritypatchday"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-3Q3P-5X2R-J3HQ

Vulnerability from github – Published: 2025-06-10 03:30 – Updated: 2025-06-10 03:30
VLAI
Details

SAP MDM Server Read function allows an attacker to send specially crafted packets which could trigger a memory read access violation in the server process that would then fail and exit unexpectedly causing high impact on availability with no impact on confidentiality and integrity of the application.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-42995"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-590"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-10T01:15:22Z",
    "severity": "HIGH"
  },
  "details": "SAP MDM Server Read function allows an attacker to send specially crafted packets which could trigger a memory read access violation in the server process that would then fail and exit unexpectedly causing high impact on availability with no impact on confidentiality and integrity of the application.",
  "id": "GHSA-3q3p-5x2r-j3hq",
  "modified": "2025-06-10T03:30:29Z",
  "published": "2025-06-10T03:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-42995"
    },
    {
      "type": "WEB",
      "url": "https://me.sap.com/notes/3610006"
    },
    {
      "type": "WEB",
      "url": "https://url.sap/sapsecuritypatchday"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-4873-36H9-WV49

Vulnerability from github – Published: 2021-09-20 19:54 – Updated: 2024-11-19 18:04
VLAI
Summary
Out-of-bounds read/write and invalid free with `externref`s and GC safepoints in Wasmtime
Details

Impact

There was an invalid free and out-of-bounds read and write bug when running Wasm that uses externrefs in Wasmtime.

To trigger this bug, Wasmtime needs to be running Wasm that uses externrefs, the host creates non-null externrefs, Wasmtime performs a garbage collection (GC), and there has to be a Wasm frame on the stack that is at a GC safepoint where

  • there are no live references at this safepoint, and
  • there is a safepoint with live references earlier in this frame's function.

Under this scenario, Wasmtime would incorrectly use the GC stack map for the safepoint from earlier in the function instead of the empty safepoint. This would result in Wasmtime treating arbitrary stack slots as externrefs that needed to be rooted for GC. At the next GC, it would be determined that nothing was referencing these bogus externrefs (because nothing could ever reference them, because they are not really externrefs) and then Wasmtime would deallocate them and run <ExternRef as Drop>::drop on them. This results in a free of memory that is not necessarily on the heap (and shouldn't be freed at this moment even if it was), as well as potential out-of-bounds reads and writes.

Even though support for externrefs (via the reference types proposal) is enabled by default, unless you are creating non-null externrefs in your host code or explicitly triggering GCs, you cannot be affected by this bug.

We have reason to believe that the effective impact of this bug is relatively small because usage of externref is currently quite rare.

Patches

This bug has been patched and users should upgrade to Wasmtime version 0.30.0.

Additionally, we have updated our primary externref fuzz target such that it better exercises these code paths and we can have greater confidence in their correctness going forward.

Workarounds

If you cannot upgrade Wasmtime at this time, you can avoid this bug by disabling the reference types proposal by passing false to wasmtime::Config::wasm_reference_types

References

For more information

If you have any questions or comments about this advisory:

Severity
6.3 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
5.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "wasmtime"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.26.0"
            },
            {
              "fixed": "0.30.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "wasmtime"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.26.0"
            },
            {
              "fixed": "0.30.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-39218"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125",
      "CWE-590",
      "CWE-787"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-09-17T20:05:58Z",
    "nvd_published_at": "2021-09-17T21:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nThere was an invalid free and out-of-bounds read and write bug when running Wasm that uses `externref`s in Wasmtime.\n\nTo trigger this bug, Wasmtime needs to be running Wasm that uses `externref`s, the host creates non-null `externrefs`, Wasmtime performs a garbage collection (GC), and there has to be a Wasm frame on the stack that is at a GC safepoint where\n\n* there are no live references at this safepoint, and\n* there is a safepoint with live references earlier in this frame\u0027s function.\n\nUnder this scenario, Wasmtime would incorrectly use the GC stack map for the safepoint from earlier in the function instead of the empty safepoint. This would result in Wasmtime treating arbitrary stack slots as `externref`s that needed to be rooted for GC. At the *next* GC, it would be determined that nothing was referencing these bogus `externref`s (because nothing could ever reference them, because they are not really `externref`s) and then Wasmtime would deallocate them and run `\u003cExternRef as Drop\u003e::drop` on them. This results in a free of memory that is not necessarily on the heap (and shouldn\u0027t be freed at this moment even if it was), as well as potential out-of-bounds reads and writes.\n\nEven though support for `externref`s (via the reference types proposal) is enabled by default, unless you are creating non-null `externref`s in your host code or explicitly triggering GCs, you cannot be affected by this bug.\n\nWe have reason to believe that the effective impact of this bug is relatively small because usage of `externref` is currently quite rare.\n\n### Patches\n\nThis bug has been patched and users should upgrade to Wasmtime version 0.30.0.\n\nAdditionally, we have updated [our primary `externref` fuzz target](https://github.com/bytecodealliance/wasmtime/blob/37c094faf53f1b356aab3c79d451395e4f7edb34/fuzz/fuzz_targets/table_ops.rs) such that it better exercises these code paths and we can have greater confidence in their correctness going forward.\n\n### Workarounds\n\nIf you cannot upgrade Wasmtime at this time, you can avoid this bug by disabling the reference types proposal by passing `false` to [`wasmtime::Config::wasm_reference_types`](https://docs.rs/wasmtime/0.29.0/wasmtime/struct.Config.html#method.wasm_reference_types)\n\n### References\n\n* [The Wasm reference types proposal, which introduces `externref`](https://github.com/WebAssembly/reference-types/)\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Reach out to us on [the Bytecode Alliance Zulip chat](https://bytecodealliance.zulipchat.com/#narrow/stream/217126-wasmtime)\n* Open an issue in [the `bytecodealliance/wasmtime` repository](https://github.com/bytecodealliance/wasmtime/)",
  "id": "GHSA-4873-36h9-wv49",
  "modified": "2024-11-19T18:04:00Z",
  "published": "2021-09-20T19:54:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4873-36h9-wv49"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39218"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime/commit/398a73f0dd862dbe703212ebae8e34036a18c11c"
    },
    {
      "type": "WEB",
      "url": "https://crates.io/crates/wasmtime"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bytecodealliance/wasmtime"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bytecodealliance/wasmtime-py/compare/0.29.0...0.30.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/wasmtime/PYSEC-2021-321.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WAVBRYDDUIY2ZR3K3FO4BVYJKIMJ5TP7"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z2Z33FTXFQ6EOINVEQIP4DFBG53G5XIY"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0110.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Out-of-bounds read/write and invalid free with `externref`s and GC safepoints in Wasmtime "
}

GHSA-5X7Q-WM95-R63C

Vulnerability from github – Published: 2026-05-28 21:32 – Updated: 2026-05-28 21:32
VLAI
Details

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.

Severity
6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-47328"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-590"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T19:16:40Z",
    "severity": "MODERATE"
  },
  "details": "Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.",
  "id": "GHSA-5x7q-wm95-r63c",
  "modified": "2026-05-28T21:32:02Z",
  "published": "2026-05-28T21:32:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47328"
    },
    {
      "type": "WEB",
      "url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=7f3c4902c39432ce7ea0d384cb70eba282247fac"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-65VC-89H4-WVX6

Vulnerability from github – Published: 2025-06-10 00:30 – Updated: 2025-06-10 00:30
VLAI
Details

A vulnerability classified as critical was found in GNU PSPP 82fb509fb2fedd33e7ac0c46ca99e108bb3bdffb. Affected by this vulnerability is the function parse_variables_option of the file utilities/pspp-convert.c. The manipulation leads to free of memory not on the heap. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.

Severity
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
1.9 (Low)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-5899"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-590"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-09T22:15:22Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability classified as critical was found in GNU PSPP 82fb509fb2fedd33e7ac0c46ca99e108bb3bdffb. Affected by this vulnerability is the function parse_variables_option of the file utilities/pspp-convert.c. The manipulation leads to free of memory not on the heap. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.",
  "id": "GHSA-65vc-89h4-wvx6",
  "modified": "2025-06-10T00:30:30Z",
  "published": "2025-06-10T00:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-5899"
    },
    {
      "type": "WEB",
      "url": "https://drive.google.com/file/d/1YPJLiBzOwVTcc2FzdawYxBJWGujwqy7o/view?usp=sharing"
    },
    {
      "type": "WEB",
      "url": "https://savannah.gnu.org/bugs/index.php?67072"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.311671"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.311671"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.586106"
    },
    {
      "type": "WEB",
      "url": "https://www.gnu.org"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-74H7-6GF3-J457

Vulnerability from github – Published: 2026-10-07 18:32 – Updated: 2026-10-07 18:32
VLAI
Details

A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper validation when an affected device is processing an MPLS echo-request packet. An attacker could exploit this vulnerability by sending a crafted MPLS echo-request to an IP address on an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes, which could result in a device reload and a DoS condition.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-76465"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-590"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-07T17:16:59Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code with\u0026nbsp;root privileges or cause a denial of service (DoS) condition on an affected device.\n\nThis vulnerability is due to improper validation when an affected device is processing an MPLS echo-request packet. An attacker could exploit this vulnerability by sending a crafted MPLS echo-request to an IP address on an affected device. A successful exploit could allow the attacker to execute arbitrary code with\u0026nbsp;root privileges and could cause process crashes, which could result in a device reload and a DoS condition.",
  "id": "GHSA-74h7-6gf3-j457",
  "modified": "2026-10-07T18:32:11Z",
  "published": "2026-10-07T18:32:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76465"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-moam-rce-uBTzYV7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}
Mitigation
Implementation

Only free pointers that you have called malloc on previously. This is the recommended solution. Keep track of which pointers point at the beginning of valid chunks and free them only once.

Mitigation
Implementation

Before freeing a pointer, the programmer should make sure that the pointer was previously allocated on the heap and that the memory belongs to the programmer. Freeing an unallocated pointer will cause undefined behavior in the program.

Mitigation MIT-4.6
Architecture and Design

Strategy: Libraries or Frameworks

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, glibc in Linux provides protection against free of invalid pointers.
Mitigation
Architecture and Design

Use a language that provides abstractions for memory allocation and deallocation.

No CAPEC attack patterns related to this CWE.

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