Vulnerability-Lookup

CVE-2023-53516 (GCVE-0-2023-53516)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:46 – Updated: 2026-05-11 19:46

Title

macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF

Summary

In the Linux kernel, the following vulnerability has been resolved: macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF The previous commit 954d1fa1ac93 ("macvlan: Add netlink attribute for broadcast cutoff") added one additional attribute named IFLA_MACVLAN_BC_CUTOFF to allow broadcast cutfoff. However, it forgot to describe the nla_policy at macvlan_policy (drivers/net/macvlan.c). Hence, this suppose NLA_S32 (4 bytes) integer can be faked as empty (0 bytes) by a malicious user, which could leads to OOB in heap just like CVE-2023-3773. To fix it, this commit just completes the nla_policy description for IFLA_MACVLAN_BC_CUTOFF. This enforces the length check and avoids the potential OOB read.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/79f44709aa7a744fb…
https://git.kernel.org/stable/c/55cef78c244d0d076…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348 , < 79f44709aa7a744fbfbadd4aef678443290c6991 (git) Affected: 954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348 , < 55cef78c244d0d076f5a75a35530ca63c92f4426 (git)	guessed
Linux	Linux	Affected: 6.4 Unaffected: 0 , < 6.4 (semver) Unaffected: 6.4.8 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2023-53516

Vulnerability from fkie_nvd - Published: 2025-10-01 12:15 - Updated: 2026-06-17 06:45

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/55cef78c244d0d076f5a75a35530ca63c92f4426	Patch
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/79f44709aa7a744fbfbadd4aef678443290c6991	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	6.5
linux	linux_kernel	6.5
linux	linux_kernel	6.5

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/macvlan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "79f44709aa7a744fbfbadd4aef678443290c6991",
              "status": "affected",
              "version": "954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348",
              "versionType": "git"
            },
            {
              "lessThan": "55cef78c244d0d076f5a75a35530ca63c92f4426",
              "status": "affected",
              "version": "954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/macvlan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
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    }
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  "id": "CVE-2023-53516",
  "lastModified": "2026-06-17T06:45:30.793",
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GHSA-M235-57QR-6FH8

Vulnerability from github – Published: 2025-10-01 12:30 – Updated: 2026-01-26 21:30

Details

In the Linux kernel, the following vulnerability has been resolved:

macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF

The previous commit 954d1fa1ac93 ("macvlan: Add netlink attribute for broadcast cutoff") added one additional attribute named IFLA_MACVLAN_BC_CUTOFF to allow broadcast cutfoff.

However, it forgot to describe the nla_policy at macvlan_policy (drivers/net/macvlan.c). Hence, this suppose NLA_S32 (4 bytes) integer can be faked as empty (0 bytes) by a malicious user, which could leads to OOB in heap just like CVE-2023-3773.

To fix it, this commit just completes the nla_policy description for IFLA_MACVLAN_BC_CUTOFF. This enforces the length check and avoids the potential OOB read.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2023-53516"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-01T12:15:55Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmacvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF\n\nThe previous commit 954d1fa1ac93 (\"macvlan: Add netlink attribute for\nbroadcast cutoff\") added one additional attribute named\nIFLA_MACVLAN_BC_CUTOFF to allow broadcast cutfoff.\n\nHowever, it forgot to describe the nla_policy at macvlan_policy\n(drivers/net/macvlan.c). Hence, this suppose NLA_S32 (4 bytes) integer\ncan be faked as empty (0 bytes) by a malicious user, which could leads\nto OOB in heap just like CVE-2023-3773.\n\nTo fix it, this commit just completes the nla_policy description for\nIFLA_MACVLAN_BC_CUTOFF. This enforces the length check and avoids the\npotential OOB read.",
  "id": "GHSA-m235-57qr-6fh8",
  "modified": "2026-01-26T21:30:30Z",
  "published": "2025-10-01T12:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53516"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/55cef78c244d0d076f5a75a35530ca63c92f4426"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79f44709aa7a744fbfbadd4aef678443290c6991"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

SUSE-SU-2025:03600-1

Vulnerability from csaf_suse - Published: 2025-10-15 12:54 - Updated: 2026-09-20 17:51

Summary

Security update for the Linux Kernel

Severity

Important

Scope

346 vulnerabilities in this advisory, including CVE-2023-53516.

CVE-2023-53516

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 222 products

Open the full advisory

SUSE-SU-2025:03634-1

Vulnerability from csaf_suse - Published: 2025-10-17 14:32 - Updated: 2026-09-20 17:53

Summary

Security update for the Linux Kernel

Severity

Important

Scope

445 vulnerabilities in this advisory, including CVE-2023-53516.

CVE-2023-53516

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 49 products

Open the full advisory

SUSE-SU-2025:20851-1

Vulnerability from csaf_suse - Published: 2025-10-15 16:17 - Updated: 2026-09-20 18:19

Summary

Security update for the Linux Kernel

Severity

Important

Scope

346 vulnerabilities in this advisory, including CVE-2023-53516.

CVE-2023-53516

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 11 products

Open the full advisory

SUSE-SU-2025:20861-1

Vulnerability from csaf_suse - Published: 2025-10-15 15:17 - Updated: 2026-09-20 18:19

Summary

Security update for the Linux Kernel

Severity

Important

Scope

346 vulnerabilities in this advisory, including CVE-2023-53516.

CVE-2023-53516

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 17 products

Open the full advisory

SUSE-SU-2025:20870-1

Vulnerability from csaf_suse - Published: 2025-10-23 16:01 - Updated: 2026-09-20 18:19

Summary

Security update for the Linux Kernel

Severity

Important

Scope

346 vulnerabilities in this advisory, including CVE-2023-53516.

CVE-2023-53516

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 4 products

Open the full advisory

SUSE-SU-2025:20898-1

Vulnerability from csaf_suse - Published: 2025-10-23 13:59 - Updated: 2026-09-20 18:20

Summary

Security update for the Linux Kernel

Severity

Important

Scope

346 vulnerabilities in this advisory, including CVE-2023-53516.

CVE-2023-53516

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 7 products

Open the full advisory

SUSE-SU-2025:3751-1

Vulnerability from csaf_suse - Published: 2025-10-23 10:25 - Updated: 2026-09-20 18:24

Summary

Security update for the Linux Kernel

Severity

Important

Scope

346 vulnerabilities in this advisory, including CVE-2023-53516.

CVE-2023-53516

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 41 products

Open the full advisory

SUSE-SU-2025:4057-1

Vulnerability from csaf_suse - Published: 2025-11-11 18:36 - Updated: 2025-11-11 18:36

Summary

Security update for the Linux Kernel

Severity

Important

Scope

462 vulnerabilities in this advisory, including CVE-2023-53516.

CVE-2023-53516

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Recommended: 56 products

Open the full advisory

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2023-53516 (GCVE-0-2023-53516)

Tags

Sightings

Nomenclature

Related by attack behaviour