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

Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-08-05 08:58
VLAI
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
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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                      "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"
                }
              ]
            }
          ],
          "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."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-23T14:57:18.128Z",
            "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": "2026-05-23T14:57:18.128Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.


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.