Vulnerability-Lookup

FKIE_CVE-2022-49809

Vulnerability from fkie_nvd - Published: 2025-05-01 15:16 - Updated: 2026-06-17 05:19

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: net/x25: Fix skb leak in x25_lapb_receive_frame() x25_lapb_receive_frame() using skb_copy() to get a private copy of skb, the new skb should be freed in the undersized/fragmented skb error handling path. Otherwise there is a memory leak.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0ef17d966445358a55c5f4ccf2c73cca3e39192b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2929cceb2fcf0ded7182562e4888afafece82cce	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2d675be16a461310d738d93f9f1a00da62055c5a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9f00da9c866d506998bf0a3f699ec900730472da	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c8baf1fc248b2e88642f094fea9509a9bf98c5bb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dfcfbe4f2e4b2c81cff4e79b48502d97fda73118	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e109b41870db995cae25dfaf0cc3922f9028b1a1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fda0ba7c84b46d10947c687320804b9de149a921	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	3.1
linux	linux_kernel	6.1
linux	linux_kernel	6.1
linux	linux_kernel	6.1
linux	linux_kernel	6.1
linux	linux_kernel	6.1

JSON

To clipboard

{
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          "programFiles": [
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        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "configurations": [
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/x25: Fix skb leak in x25_lapb_receive_frame()\n\nx25_lapb_receive_frame() using skb_copy() to get a private copy of\nskb, the new skb should be freed in the undersized/fragmented skb\nerror handling path. Otherwise there is a memory leak."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/x25: Se corrige la fuga de skb en x25_lapb_receive_frame(). x25_lapb_receive_frame() usa skb_copy() para obtener una copia privada de skb. El nuevo skb debe liberarse en la ruta de gesti\u00f3n de errores de skb de tama\u00f1o insuficiente/fragmentado. De lo contrario, se produce una fuga de memoria."
    }
  ],
  "id": "CVE-2022-49809",
  "lastModified": "2026-06-17T05:19:11.893",
  "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": "2025-05-01T15:16:04.237",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0ef17d966445358a55c5f4ccf2c73cca3e39192b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/2929cceb2fcf0ded7182562e4888afafece82cce"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2d675be16a461310d738d93f9f1a00da62055c5a"
    },
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    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/dfcfbe4f2e4b2c81cff4e79b48502d97fda73118"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
    {
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        "Patch"
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      "url": "https://git.kernel.org/stable/c/fda0ba7c84b46d10947c687320804b9de149a921"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2022-49809 (GCVE-0-2022-49809)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-05-23 15:22

Title

net/x25: Fix skb leak in x25_lapb_receive_frame()

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/fda0ba7c84b46d109…
https://git.kernel.org/stable/c/dfcfbe4f2e4b2c81c…
https://git.kernel.org/stable/c/0ef17d966445358a5…
https://git.kernel.org/stable/c/e109b41870db995ca…
https://git.kernel.org/stable/c/9f00da9c866d50699…
https://git.kernel.org/stable/c/c8baf1fc248b2e886…
https://git.kernel.org/stable/c/2d675be16a461310d…
https://git.kernel.org/stable/c/2929cceb2fcf0ded7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df , < fda0ba7c84b46d10947c687320804b9de149a921 (git) Affected: cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df , < dfcfbe4f2e4b2c81cff4e79b48502d97fda73118 (git) Affected: cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df , < 0ef17d966445358a55c5f4ccf2c73cca3e39192b (git) Affected: cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df , < e109b41870db995cae25dfaf0cc3922f9028b1a1 (git) Affected: cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df , < 9f00da9c866d506998bf0a3f699ec900730472da (git) Affected: cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df , < c8baf1fc248b2e88642f094fea9509a9bf98c5bb (git) Affected: cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df , < 2d675be16a461310d738d93f9f1a00da62055c5a (git) Affected: cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df , < 2929cceb2fcf0ded7182562e4888afafece82cce (git) Affected: 7f3ea0c12493c9ff38a13a89bcf08846b50c1f1c (git) Affected: 3.0.72 , < 3.1 (semver)
Linux	Linux	Affected: 3.1 Unaffected: 0 , < 3.1 (semver) Unaffected: 4.9.334 , ≤ 4.9.* (semver) Unaffected: 4.14.300 , ≤ 4.14.* (semver) Unaffected: 4.19.267 , ≤ 4.19.* (semver) Unaffected: 5.4.225 , ≤ 5.4.* (semver) Unaffected: 5.10.156 , ≤ 5.10.* (semver) Unaffected: 5.15.80 , ≤ 5.15.* (semver) Unaffected: 6.0.10 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/x25/x25_dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
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            },
            {
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "5.4.225",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.10.156",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.334",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.300",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.267",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.225",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.156",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.80",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.10",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.0.72",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/x25: Fix skb leak in x25_lapb_receive_frame()\n\nx25_lapb_receive_frame() using skb_copy() to get a private copy of\nskb, the new skb should be freed in the undersized/fragmented skb\nerror handling path. Otherwise there is a memory leak."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:22:56.551Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fda0ba7c84b46d10947c687320804b9de149a921"
        },
        {
          "url": "https://git.kernel.org/stable/c/dfcfbe4f2e4b2c81cff4e79b48502d97fda73118"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ef17d966445358a55c5f4ccf2c73cca3e39192b"
        },
        {
          "url": "https://git.kernel.org/stable/c/e109b41870db995cae25dfaf0cc3922f9028b1a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f00da9c866d506998bf0a3f699ec900730472da"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8baf1fc248b2e88642f094fea9509a9bf98c5bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d675be16a461310d738d93f9f1a00da62055c5a"
        },
        {
          "url": "https://git.kernel.org/stable/c/2929cceb2fcf0ded7182562e4888afafece82cce"
        }
      ],
      "title": "net/x25: Fix skb leak in x25_lapb_receive_frame()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49809",
    "datePublished": "2025-05-01T14:09:34.853Z",
    "dateReserved": "2025-05-01T14:05:17.226Z",
    "dateUpdated": "2026-05-23T15:22:56.551Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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FKIE_CVE-2022-49809

CVE-2022-49809 (GCVE-0-2022-49809)

Tags

Sightings

Nomenclature

Related by attack behaviour