CVE-2022-50365 (GCVE-0-2022-50365)
Vulnerability from cvelistv5
Published
2025-09-17 14:56
Modified
2025-09-17 14:56
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 162a5a8c3aff15c449e6b38355cdf80ab4f77a5a
Version: 55fb612bef7fd237fb70068e2b6ff1cd1543a8ef
Version: 821302dd0c51d29269ef73a595bdff294419e2cd
Version: 3dcbdb134f329842a38f0e6797191b885ab00a00
Version: 3dcbdb134f329842a38f0e6797191b885ab00a00
Version: 3dcbdb134f329842a38f0e6797191b885ab00a00
Version: 3dcbdb134f329842a38f0e6797191b885ab00a00
Version: 3dcbdb134f329842a38f0e6797191b885ab00a00
Version: 3dcbdb134f329842a38f0e6797191b885ab00a00
Version: 92984818ff8cfd97311a5e0ac27f148a00df2b54
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "5.3"
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              "status": "unaffected",
              "version": "0",
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              "version": "4.19.270",
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              "status": "unaffected",
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              "version": "5.15.86",
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              "version": "6.0.16",
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              "version": "6.1.2",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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              "negate": false,
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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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-17T14:56:16.648Z",
        "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"
        },
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/2d7afdcbc9d32423f177ee12b7c93783aea338fb"
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      ],
      "title": "skbuff: Account for tail adjustment during pull operations",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "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": "2025-09-17T14:56:16.648Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50365\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-17T15:15:35.343\",\"lastModified\":\"2025-09-18T13:43:34.310\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2d59f0ca153e9573ec4f140988c0ccca0eb4181b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2d7afdcbc9d32423f177ee12b7c93783aea338fb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/331615d837f4979eb91a336a223a5c7f7886ecd5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/668dc454bcbd1da73605201ff43f988c70848215\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6ac417d71b80e74b002313fcd73f7e9008e8e457\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/821be5a5ab09a40ba09cb5ba354f18cf7996fea0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8fb773eed4909ef5dc1bbeb3629a337d3336df7e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/946dd5dc4fcc4123cdfe3942b20012c4448cf89a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ff3743d00f41d803e6ab9334962b674f3b7fd0cb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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