CVE-2022-49862 (GCVE-0-2022-49862)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2026-05-23 15:23
VLAI
Title
tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
Summary
In the Linux kernel, the following vulnerability has been resolved: tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header This is a follow-up for commit 974cb0e3e7c9 ("tipc: fix uninit-value in tipc_nl_compat_name_table_dump") where it should have type casted sizeof(..) to int to work when TLV_GET_DATA_LEN() returns a negative value. syzbot reported a call trace because of it: BUG: KMSAN: uninit-value in ... tipc_nl_compat_name_table_dump+0x841/0xea0 net/tipc/netlink_compat.c:934 __tipc_nl_compat_dumpit+0xab2/0x1320 net/tipc/netlink_compat.c:238 tipc_nl_compat_dumpit+0x991/0xb50 net/tipc/netlink_compat.c:321 tipc_nl_compat_recv+0xb6e/0x1640 net/tipc/netlink_compat.c:1324 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline] genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x103f/0x1260 net/netlink/genetlink.c:792 netlink_rcv_skb+0x3a5/0x6c0 net/netlink/af_netlink.c:2501 genl_rcv+0x3c/0x50 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline]
Severity
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 2025-10-01 16:11 UTC
CWE
  • CWE-908 - Use of Uninitialized Resource
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4c559fb7e111077b56f62ccf833a52d8169cde19 , < 082707d3df191bf5bb8801d43e4ce3dea39ca173 (git)
Affected: 2aae1723dea1235ffef183daf0694805297424f6 , < a0ead1d648df9c456baec832b494513ef405949a (git)
Affected: 2d5fc1d492d194aa2986c5a9d8a48a60e9143a72 , < 55a253a6753a603e80b95932ca971ba514aa6ce7 (git)
Affected: 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 , < 36769b9477491a7af6635863bd950309c1e1b96c (git)
Affected: 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 , < f31dd158580940938f77514b87337a777520185a (git)
Affected: 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 , < 301caa06091af4d5cf056ac8249cbda4e6029c6a (git)
Affected: 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 , < 6cee2c60bd168279852ac7dbe54c2b70d1028644 (git)
Affected: 974cb0e3e7c963ced06c4e32c5b2884173fa5e01 , < 1c075b192fe41030457cd4a5f7dea730412bca40 (git)
Affected: c25352f9ad5dffb4de95069e67891e2aa2e99e50 (git)
Affected: 5486e8d46560ca2b4d86cbd7d3a66d9913b2ac65 (git)
Affected: 4.9.152 , < 4.9.334 (semver)
Affected: 4.14.95 , < 4.14.300 (semver)
Affected: 4.19.17 , < 4.19.267 (semver)
Affected: 4.4.172 , < 4.5 (semver)
Affected: 4.20.4 , < 4.21 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (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: 5.10.155 , ≤ 5.10.* (semver)
Unaffected: 5.15.79 , ≤ 5.15.* (semver)
Unaffected: 6.0.9 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix the msg-\u003ereq tlv len check in tipc_nl_compat_name_table_dump_header\n\nThis is a follow-up for commit 974cb0e3e7c9 (\"tipc: fix uninit-value\nin tipc_nl_compat_name_table_dump\") where it should have type casted\nsizeof(..) to int to work when TLV_GET_DATA_LEN() returns a negative\nvalue.\n\nsyzbot reported a call trace because of it:\n\n  BUG: KMSAN: uninit-value in ...\n   tipc_nl_compat_name_table_dump+0x841/0xea0 net/tipc/netlink_compat.c:934\n   __tipc_nl_compat_dumpit+0xab2/0x1320 net/tipc/netlink_compat.c:238\n   tipc_nl_compat_dumpit+0x991/0xb50 net/tipc/netlink_compat.c:321\n   tipc_nl_compat_recv+0xb6e/0x1640 net/tipc/netlink_compat.c:1324\n   genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]\n   genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]\n   genl_rcv_msg+0x103f/0x1260 net/netlink/genetlink.c:792\n   netlink_rcv_skb+0x3a5/0x6c0 net/netlink/af_netlink.c:2501\n   genl_rcv+0x3c/0x50 net/netlink/genetlink.c:803\n   netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n   netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345\n   netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921\n   sock_sendmsg_nosec net/socket.c:714 [inline]\n   sock_sendmsg net/socket.c:734 [inline]"
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tipc: corrige la comprobaci\u00f3n de longitud del tlv msg-\u0026gt;req en tipc_nl_compat_name_table_dump_header Este es un seguimiento del commit 974cb0e3e7c9 (\"tipc: corrige uninit-value en tipc_nl_compat_name_table_dump\") donde deber\u00eda haber convertido el tipo sizeof(..) a int para que funcione cuando TLV_GET_DATA_LEN() devuelve un valor negativo. syzbot inform\u00f3 un seguimiento de llamadas debido a esto: ERROR: KMSAN: valor no inicializado en ... tipc_nl_compat_name_table_dump+0x841/0xea0 net/tipc/netlink_compat.c:934 __tipc_nl_compat_dumpit+0xab2/0x1320 net/tipc/netlink_compat.c:238 tipc_nl_compat_dumpit+0x991/0xb50 net/tipc/netlink_compat.c:321 tipc_nl_compat_recv+0xb6e/0x1640 net/tipc/netlink_compat.c:1324 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline] genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x103f/0x1260 net/netlink/genetlink.c:792 netlink_rcv_skb+0x3a5/0x6c0 net/netlink/af_netlink.c:2501 genl_rcv+0x3c/0x50 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] "
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                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.0.9",
                      "versionStartIncluding": "5.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1",
                      "versionStartIncluding": "5.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.4.172",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.20.4",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix the msg-\u003ereq tlv len check in tipc_nl_compat_name_table_dump_header\n\nThis is a follow-up for commit 974cb0e3e7c9 (\"tipc: fix uninit-value\nin tipc_nl_compat_name_table_dump\") where it should have type casted\nsizeof(..) to int to work when TLV_GET_DATA_LEN() returns a negative\nvalue.\n\nsyzbot reported a call trace because of it:\n\n  BUG: KMSAN: uninit-value in ...\n   tipc_nl_compat_name_table_dump+0x841/0xea0 net/tipc/netlink_compat.c:934\n   __tipc_nl_compat_dumpit+0xab2/0x1320 net/tipc/netlink_compat.c:238\n   tipc_nl_compat_dumpit+0x991/0xb50 net/tipc/netlink_compat.c:321\n   tipc_nl_compat_recv+0xb6e/0x1640 net/tipc/netlink_compat.c:1324\n   genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]\n   genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]\n   genl_rcv_msg+0x103f/0x1260 net/netlink/genetlink.c:792\n   netlink_rcv_skb+0x3a5/0x6c0 net/netlink/af_netlink.c:2501\n   genl_rcv+0x3c/0x50 net/netlink/genetlink.c:803\n   netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n   netlink_unicast+0xf3b/0x1270 net/netlink/af_netlink.c:1345\n   netlink_sendmsg+0x1288/0x1440 net/netlink/af_netlink.c:1921\n   sock_sendmsg_nosec net/socket.c:714 [inline]\n   sock_sendmsg net/socket.c:734 [inline]"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-23T15:23:02.760Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/082707d3df191bf5bb8801d43e4ce3dea39ca173"
            },
            {
              "url": "https://git.kernel.org/stable/c/a0ead1d648df9c456baec832b494513ef405949a"
            },
            {
              "url": "https://git.kernel.org/stable/c/55a253a6753a603e80b95932ca971ba514aa6ce7"
            },
            {
              "url": "https://git.kernel.org/stable/c/36769b9477491a7af6635863bd950309c1e1b96c"
            },
            {
              "url": "https://git.kernel.org/stable/c/f31dd158580940938f77514b87337a777520185a"
            },
            {
              "url": "https://git.kernel.org/stable/c/301caa06091af4d5cf056ac8249cbda4e6029c6a"
            },
            {
              "url": "https://git.kernel.org/stable/c/6cee2c60bd168279852ac7dbe54c2b70d1028644"
            },
            {
              "url": "https://git.kernel.org/stable/c/1c075b192fe41030457cd4a5f7dea730412bca40"
            }
          ],
          "title": "tipc: fix the msg-\u003ereq tlv len check in tipc_nl_compat_name_table_dump_header",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49862",
        "datePublished": "2025-05-01T14:10:15.742Z",
        "dateReserved": "2025-05-01T14:05:17.236Z",
        "dateUpdated": "2026-05-23T15:23:02.760Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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