Vulnerability-Lookup

FKIE_CVE-2026-43457

Vulnerability from fkie_nvd - Published: 2026-05-08 15:16 - Updated: 2026-05-21 16:50

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: mctp: i2c: fix skb memory leak in receive path When 'midev->allow_rx' is false, the newly allocated skb isn't consumed by netif_rx(), it needs to free the skb directly.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
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              "versionEndExcluding": "6.1.167",
              "versionStartIncluding": "5.18",
              "vulnerable": true
            },
            {
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    }
  ],
  "id": "CVE-2026-43457",
  "lastModified": "2026-05-21T16:50:46.697",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-05-08T15:16:58.517",
  "references": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-43457 (GCVE-0-2026-43457)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:24

Title

mctp: i2c: fix skb memory leak in receive path

Summary

Severity

No CVSS data available.

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9…
https://git.kernel.org/stable/c/d7900a43b0a314a64…
https://git.kernel.org/stable/c/9f81be2ab9d8e4744…
https://git.kernel.org/stable/c/1ec54187e1aa40a4c…
https://git.kernel.org/stable/c/1b1be322342a6b008…
https://git.kernel.org/stable/c/e3f5e0f22cfc2371e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < 0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < d7900a43b0a314a645ca0a2adf45928dbc7001f4 (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < 9f81be2ab9d8e4744871bfb3e868ef413413829f (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < 1ec54187e1aa40a4cfa2b265e9a311179f24b98d (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < 1b1be322342a6b0085bf6ee52235e5ac9834ec25 (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69 (git)
Linux	Linux	Affected: 5.18 Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/mctp/mctp-i2c.c"
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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.

Action not permitted

FKIE_CVE-2026-43457

CVE-2026-43457 (GCVE-0-2026-43457)

Tags

Sightings

Nomenclature