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EUVD-2026-344901

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:58

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:58:33.413066+00:00",
  "id": "EUVD-2026-344901"
}

CVE-2022-50365 (GCVE-0-2022-50365)

Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-08-05 08:58

Title

skbuff: Account for tail adjustment during pull operations

Summary

In the Linux kernel, the following vulnerability has been resolved: skbuff: Account for tail adjustment during pull operations Extending the tail can have some unexpected side effects if a program uses a helper like BPF_FUNC_skb_pull_data to read partial content beyond the head skb headlen when all the skbs in the gso frag_list are linear with no head_frag - kernel BUG at net/core/skbuff.c:4219! pc : skb_segment+0xcf4/0xd2c lr : skb_segment+0x63c/0xd2c Call trace: skb_segment+0xcf4/0xd2c __udp_gso_segment+0xa4/0x544 udp4_ufo_fragment+0x184/0x1c0 inet_gso_segment+0x16c/0x3a4 skb_mac_gso_segment+0xd4/0x1b0 __skb_gso_segment+0xcc/0x12c udp_rcv_segment+0x54/0x16c udp_queue_rcv_skb+0x78/0x144 udp_unicast_rcv_skb+0x8c/0xa4 __udp4_lib_rcv+0x490/0x68c udp_rcv+0x20/0x30 ip_protocol_deliver_rcu+0x1b0/0x33c ip_local_deliver+0xd8/0x1f0 ip_rcv+0x98/0x1a4 deliver_ptype_list_skb+0x98/0x1ec __netif_receive_skb_core+0x978/0xc60 Fix this by marking these skbs as GSO_DODGY so segmentation can handle the tail updates accordingly.

Severity

7.5 (High)


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

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 18:34 UTC

CWE

CWE-noinfo Not enough information

Assigner

Linux mitre root Scorecard

References

9 references

URL	Tags
https://git.kernel.org/stable/c/ff3743d00f41d803e…
https://git.kernel.org/stable/c/6ac417d71b80e74b0…
https://git.kernel.org/stable/c/2d59f0ca153e9573e…
https://git.kernel.org/stable/c/668dc454bcbd1da73…
https://git.kernel.org/stable/c/821be5a5ab09a40ba…
https://git.kernel.org/stable/c/8fb773eed4909ef5d…
https://git.kernel.org/stable/c/946dd5dc4fcc4123c…
https://git.kernel.org/stable/c/331615d837f4979eb…
https://git.kernel.org/stable/c/2d7afdcbc9d32423f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 162a5a8c3aff15c449e6b38355cdf80ab4f77a5a , < ff3743d00f41d803e6ab9334962b674f3b7fd0cb (git) Affected: 55fb612bef7fd237fb70068e2b6ff1cd1543a8ef , < 6ac417d71b80e74b002313fcd73f7e9008e8e457 (git) Affected: 821302dd0c51d29269ef73a595bdff294419e2cd , < 2d59f0ca153e9573ec4f140988c0ccca0eb4181b (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 668dc454bcbd1da73605201ff43f988c70848215 (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 821be5a5ab09a40ba09cb5ba354f18cf7996fea0 (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 8fb773eed4909ef5dc1bbeb3629a337d3336df7e (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 946dd5dc4fcc4123cdfe3942b20012c4448cf89a (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 331615d837f4979eb91a336a223a5c7f7886ecd5 (git) Affected: 3dcbdb134f329842a38f0e6797191b885ab00a00 , < 2d7afdcbc9d32423f177ee12b7c93783aea338fb (git) Affected: 92984818ff8cfd97311a5e0ac27f148a00df2b54 (git) Affected: 4.9.194 , < 4.9.337 (semver) Affected: 4.14.145 , < 4.14.303 (semver) Affected: 4.19.74 , < 4.19.270 (semver) Affected: 5.2.16 , < 5.3 (semver)
Linux	Linux	Affected: 5.3 Unaffected: 0 , < 5.3 (semver) Unaffected: 4.9.337 , ≤ 4.9.* (semver) Unaffected: 4.14.303 , ≤ 4.14.* (semver) Unaffected: 4.19.270 , ≤ 4.19.* (semver) Unaffected: 5.4.229 , ≤ 5.4.* (semver) Unaffected: 5.10.163 , ≤ 5.10.* (semver) Unaffected: 5.15.86 , ≤ 5.15.* (semver) Unaffected: 6.0.16 , ≤ 6.0.* (semver) Unaffected: 6.1.2 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-50365",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T18:34:36.825803Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T18:42:58.912Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "lessThan": "ff3743d00f41d803e6ab9334962b674f3b7fd0cb",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "668dc454bcbd1da73605201ff43f988c70848215",
              "status": "affected",
              "version": "3dcbdb134f329842a38f0e6797191b885ab00a00",
              "versionType": "git"
            },
            {
              "lessThan": "821be5a5ab09a40ba09cb5ba354f18cf7996fea0",
              "status": "affected",
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              "versionType": "git"
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            {
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              "versionType": "git"
            },
            {
              "lessThan": "946dd5dc4fcc4123cdfe3942b20012c4448cf89a",
              "status": "affected",
              "version": "3dcbdb134f329842a38f0e6797191b885ab00a00",
              "versionType": "git"
            },
            {
              "lessThan": "331615d837f4979eb91a336a223a5c7f7886ecd5",
              "status": "affected",
              "version": "3dcbdb134f329842a38f0e6797191b885ab00a00",
              "versionType": "git"
            },
            {
              "lessThan": "2d7afdcbc9d32423f177ee12b7c93783aea338fb",
              "status": "affected",
              "version": "3dcbdb134f329842a38f0e6797191b885ab00a00",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "92984818ff8cfd97311a5e0ac27f148a00df2b54",
              "versionType": "git"
            },
            {
              "lessThan": "4.9.337",
              "status": "affected",
              "version": "4.9.194",
              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "4.14.145",
              "versionType": "semver"
            },
            {
              "lessThan": "4.19.270",
              "status": "affected",
              "version": "4.19.74",
              "versionType": "semver"
            },
            {
              "lessThan": "5.3",
              "status": "affected",
              "version": "5.2.16",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.3"
            },
            {
              "lessThan": "5.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.337",
                  "versionStartIncluding": "4.9.194",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.303",
                  "versionStartIncluding": "4.14.145",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.270",
                  "versionStartIncluding": "4.19.74",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.229",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.163",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.86",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.2",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.2.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nskbuff: Account for tail adjustment during pull operations\n\nExtending the tail can have some unexpected side effects if a program uses\na helper like BPF_FUNC_skb_pull_data to read partial content beyond the\nhead skb headlen when all the skbs in the gso frag_list are linear with no\nhead_frag -\n\n  kernel BUG at net/core/skbuff.c:4219!\n  pc : skb_segment+0xcf4/0xd2c\n  lr : skb_segment+0x63c/0xd2c\n  Call trace:\n   skb_segment+0xcf4/0xd2c\n   __udp_gso_segment+0xa4/0x544\n   udp4_ufo_fragment+0x184/0x1c0\n   inet_gso_segment+0x16c/0x3a4\n   skb_mac_gso_segment+0xd4/0x1b0\n   __skb_gso_segment+0xcc/0x12c\n   udp_rcv_segment+0x54/0x16c\n   udp_queue_rcv_skb+0x78/0x144\n   udp_unicast_rcv_skb+0x8c/0xa4\n   __udp4_lib_rcv+0x490/0x68c\n   udp_rcv+0x20/0x30\n   ip_protocol_deliver_rcu+0x1b0/0x33c\n   ip_local_deliver+0xd8/0x1f0\n   ip_rcv+0x98/0x1a4\n   deliver_ptype_list_skb+0x98/0x1ec\n   __netif_receive_skb_core+0x978/0xc60\n\nFix this by marking these skbs as GSO_DODGY so segmentation can handle\nthe tail updates accordingly."
        }
      ],
      "metrics": [
        {
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            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The crash is on the UDP receive path (udp_rcv_segment \u2192 skb_segment) after GRO builds a frag_list GSO skb; with a realistic TC/LWT BPF program that calls bpf_skb_pull_data (as in production NAT/redirect datapaths), unauthenticated remote UDP traffic reaches the bug.\nAC:L - Once such a BPF program is attached, the attacker can reliably send GRO-aggregatable UDP frames that cause a partial frag_list pull and then hit the skb_segment BUG_ON; no race or attacker-uncontrollable memory layout is required.\nPR:N - In the highest-impact deployment the administrator has already attached the BPF program; the attacker needs no host account or capability and only sends unauthenticated packets on the wire.\nUI:N - Packet reception, GRO, BPF processing, and UDP GSO segmentation run automatically on the up interface; no separate victim mount, open, or interactive step is required.\nS:U - Impact is confined to the host kernel\u2019s availability (BUG_ON/oops/panic); it does not cross a VM, IOMMU, or other security authority boundary.\nC:N - The failure is an intentional BUG_ON in skb_segment when frag_list members are linear non-head_frag after a pull; there is no OOB read, UAF reclaim, or other information-disclosure primitive.\nI:N - There is no out-of-bounds write, use-after-free, or type-confusion write primitive\u2014only an assertion failure that panics before the invalid head_frag page-desc path\u2014so integrity is unaffected.\nA:H - The reported splat is kernel BUG at skbuff.c in skb_segment, which oopses/panics the host and is full availability impact under kernel CVSS guidance."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:58:25.023Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ff3743d00f41d803e6ab9334962b674f3b7fd0cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ac417d71b80e74b002313fcd73f7e9008e8e457"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d59f0ca153e9573ec4f140988c0ccca0eb4181b"
        },
        {
          "url": "https://git.kernel.org/stable/c/668dc454bcbd1da73605201ff43f988c70848215"
        },
        {
          "url": "https://git.kernel.org/stable/c/821be5a5ab09a40ba09cb5ba354f18cf7996fea0"
        },
        {
          "url": "https://git.kernel.org/stable/c/8fb773eed4909ef5dc1bbeb3629a337d3336df7e"
        },
        {
          "url": "https://git.kernel.org/stable/c/946dd5dc4fcc4123cdfe3942b20012c4448cf89a"
        },
        {
          "url": "https://git.kernel.org/stable/c/331615d837f4979eb91a336a223a5c7f7886ecd5"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d7afdcbc9d32423f177ee12b7c93783aea338fb"
        }
      ],
      "title": "skbuff: Account for tail adjustment during pull operations",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50365",
    "datePublished": "2025-09-17T14:56:16.648Z",
    "dateReserved": "2025-09-17T14:53:06.995Z",
    "dateUpdated": "2026-08-05T08:58:25.023Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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EUVD-2026-344901

CVE-2022-50365 (GCVE-0-2022-50365)

Tags

Sightings

Nomenclature

Related by attack behaviour