CVE-2024-50257 (GCVE-0-2024-50257)

Vulnerability from cvelistv5 – Published: 2024-11-09 10:15 – Updated: 2026-08-05 11:42
VLAI
Title
netfilter: Fix use-after-free in get_info()
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: Fix use-after-free in get_info() ip6table_nat module unload has refcnt warning for UAF. call trace is: WARNING: CPU: 1 PID: 379 at kernel/module/main.c:853 module_put+0x6f/0x80 Modules linked in: ip6table_nat(-) CPU: 1 UID: 0 PID: 379 Comm: ip6tables Not tainted 6.12.0-rc4-00047-gc2ee9f594da8-dirty #205 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:module_put+0x6f/0x80 Call Trace: <TASK> get_info+0x128/0x180 do_ip6t_get_ctl+0x6a/0x430 nf_getsockopt+0x46/0x80 ipv6_getsockopt+0xb9/0x100 rawv6_getsockopt+0x42/0x190 do_sock_getsockopt+0xaa/0x180 __sys_getsockopt+0x70/0xc0 __x64_sys_getsockopt+0x20/0x30 do_syscall_64+0xa2/0x1a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Concurrent execution of module unload and get_info() trigered the warning. The root cause is as follows: cpu0 cpu1 module_exit //mod->state = MODULE_STATE_GOING ip6table_nat_exit xt_unregister_template kfree(t) //removed from templ_list getinfo() t = xt_find_table_lock list_for_each_entry(tmpl, &xt_templates[af]...) if (strcmp(tmpl->name, name)) continue; //table not found try_module_get list_for_each_entry(t, &xt_net->tables[af]...) return t; //not get refcnt module_put(t->me) //uaf unregister_pernet_subsys //remove table from xt_net list While xt_table module was going away and has been removed from xt_templates list, we couldnt get refcnt of xt_table->me. Check module in xt_net->tables list re-traversal to fix it.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:25 UTC
CWE
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < ba22ea01348384df19cc1fabc7964be6e7189749 (git)
Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < cb7c388b5967946f097afdb759b7c860305f2d96 (git)
Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < 6a1f088f9807f5166f58902d26246d0b88da03a8 (git)
Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < bab3bb35c03b263c486833d50d50c081d9e9832b (git)
Affected: fdacd57c79b79a03c7ca88f706ad9fb7b46831c1 , < f48d258f0ac540f00fa617dac496c4c18b5dc2fa (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.171 , ≤ 5.15.* (semver)
Unaffected: 6.1.116 , ≤ 6.1.* (semver)
Unaffected: 6.6.60 , ≤ 6.6.* (semver)
Unaffected: 6.11.7 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: Fix use-after-free in get_info()\n\nip6table_nat module unload has refcnt warning for UAF. call trace is:\n\nWARNING: CPU: 1 PID: 379 at kernel/module/main.c:853 module_put+0x6f/0x80\nModules linked in: ip6table_nat(-)\nCPU: 1 UID: 0 PID: 379 Comm: ip6tables Not tainted 6.12.0-rc4-00047-gc2ee9f594da8-dirty #205\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996),\nBIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:module_put+0x6f/0x80\nCall Trace:\n \u003cTASK\u003e\n get_info+0x128/0x180\n do_ip6t_get_ctl+0x6a/0x430\n nf_getsockopt+0x46/0x80\n ipv6_getsockopt+0xb9/0x100\n rawv6_getsockopt+0x42/0x190\n do_sock_getsockopt+0xaa/0x180\n __sys_getsockopt+0x70/0xc0\n __x64_sys_getsockopt+0x20/0x30\n do_syscall_64+0xa2/0x1a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nConcurrent execution of module unload and get_info() trigered the warning.\nThe root cause is as follows:\n\ncpu0\t\t\t\t      cpu1\nmodule_exit\n//mod-\u003estate = MODULE_STATE_GOING\n  ip6table_nat_exit\n    xt_unregister_template\n\tkfree(t)\n\t//removed from templ_list\n\t\t\t\t      getinfo()\n\t\t\t\t\t  t = xt_find_table_lock\n\t\t\t\t\t\tlist_for_each_entry(tmpl, \u0026xt_templates[af]...)\n\t\t\t\t\t\t\tif (strcmp(tmpl-\u003ename, name))\n\t\t\t\t\t\t\t\tcontinue;  //table not found\n\t\t\t\t\t\t\ttry_module_get\n\t\t\t\t\t\tlist_for_each_entry(t, \u0026xt_net-\u003etables[af]...)\n\t\t\t\t\t\t\treturn t;  //not get refcnt\n\t\t\t\t\t  module_put(t-\u003eme) //uaf\n    unregister_pernet_subsys\n    //remove table from xt_net list\n\nWhile xt_table module was going away and has been removed from\nxt_templates list, we couldnt get refcnt of xt_table-\u003eme. Check\nmodule in xt_net-\u003etables list re-traversal to fix it."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: Se corrige el problema use-after-free en la descarga del m\u00f3dulo ip6table_nat get_info() que tiene una advertencia refcnt para UAF. El seguimiento de llamadas es: ADVERTENCIA: CPU: 1 PID: 379 en kernel/module/main.c:853 module_put+0x6f/0x80 M\u00f3dulos vinculados en: ip6table_nat(-) CPU: 1 UID: 0 PID: 379 Comm: ip6tables No contaminado 6.12.0-rc4-00047-gc2ee9f594da8-dirty #205 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:module_put+0x6f/0x80 Seguimiento de llamadas:  get_info+0x128/0x180 La ejecuci\u00f3n simult\u00e1nea de la descarga del m\u00f3dulo y get_info() activ\u00f3 la advertencia. La causa ra\u00edz es la siguiente: cpu0 cpu1 module_exit //mod-\u0026gt;state = MODULE_STATE_GOING ip6table_nat_exit xt_unregister_template kfree(t) //eliminado de la lista de plantillas getinfo() t = xt_find_table_lock list_for_each_entry(tmpl, \u0026amp;xt_templates[af]...) if (strcmp(tmpl-\u0026gt;name, name)) continue; //tabla no encontrada try_module_get list_for_each_entry(t, \u0026amp;xt_net-\u0026gt;tables[af]...) return t; //no obtener refcnt module_put(t-\u0026gt;me) //uaf unregister_pernet_subsys //eliminar tabla de la lista xt_net Mientras el m\u00f3dulo xt_table desaparec\u00eda y se eliminaba de la lista xt_templates, no pudimos obtener refcnt de xt_table-\u0026gt;me. Verifique el m\u00f3dulo en el recorrido de lista xt_net-\u0026gt;tables para solucionarlo."
          }
        ],
        "id": "CVE-2024-50257",
        "lastModified": "2026-08-04T11:21:37.863",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.0,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-50257",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-12-11T14:25:40.458302Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-11-09T11:15:11.340",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6a1f088f9807f5166f58902d26246d0b88da03a8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ba22ea01348384df19cc1fabc7964be6e7189749"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/bab3bb35c03b263c486833d50d50c081d9e9832b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/cb7c388b5967946f097afdb759b7c860305f2d96"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f48d258f0ac540f00fa617dac496c4c18b5dc2fa"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-14T12:24:45+00:00",
      "cve": "CVE-2024-50257",
      "id": "CVE-2024-50257",
      "initial_release_date": "2024-11-09T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "156",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfilter: Fix use-after-free in get_info()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50257.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.8,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-50257",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-12-11T14:25:40.458302Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-416",
                    "description": "CWE-416 Use After Free",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-12-11T14:25:41.600Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/netfilter/x_tables.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "ba22ea01348384df19cc1fabc7964be6e7189749",
                  "status": "affected",
                  "version": "fdacd57c79b79a03c7ca88f706ad9fb7b46831c1",
                  "versionType": "git"
                },
                {
                  "lessThan": "cb7c388b5967946f097afdb759b7c860305f2d96",
                  "status": "affected",
                  "version": "fdacd57c79b79a03c7ca88f706ad9fb7b46831c1",
                  "versionType": "git"
                },
                {
                  "lessThan": "6a1f088f9807f5166f58902d26246d0b88da03a8",
                  "status": "affected",
                  "version": "fdacd57c79b79a03c7ca88f706ad9fb7b46831c1",
                  "versionType": "git"
                },
                {
                  "lessThan": "bab3bb35c03b263c486833d50d50c081d9e9832b",
                  "status": "affected",
                  "version": "fdacd57c79b79a03c7ca88f706ad9fb7b46831c1",
                  "versionType": "git"
                },
                {
                  "lessThan": "f48d258f0ac540f00fa617dac496c4c18b5dc2fa",
                  "status": "affected",
                  "version": "fdacd57c79b79a03c7ca88f706ad9fb7b46831c1",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/netfilter/x_tables.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.15"
                },
                {
                  "lessThan": "5.15",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.171",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.116",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.60",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.11.*",
                  "status": "unaffected",
                  "version": "6.11.7",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.12",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.171",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.116",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.60",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.11.7",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: Fix use-after-free in get_info()\n\nip6table_nat module unload has refcnt warning for UAF. call trace is:\n\nWARNING: CPU: 1 PID: 379 at kernel/module/main.c:853 module_put+0x6f/0x80\nModules linked in: ip6table_nat(-)\nCPU: 1 UID: 0 PID: 379 Comm: ip6tables Not tainted 6.12.0-rc4-00047-gc2ee9f594da8-dirty #205\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996),\nBIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:module_put+0x6f/0x80\nCall Trace:\n \u003cTASK\u003e\n get_info+0x128/0x180\n do_ip6t_get_ctl+0x6a/0x430\n nf_getsockopt+0x46/0x80\n ipv6_getsockopt+0xb9/0x100\n rawv6_getsockopt+0x42/0x190\n do_sock_getsockopt+0xaa/0x180\n __sys_getsockopt+0x70/0xc0\n __x64_sys_getsockopt+0x20/0x30\n do_syscall_64+0xa2/0x1a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nConcurrent execution of module unload and get_info() trigered the warning.\nThe root cause is as follows:\n\ncpu0\t\t\t\t      cpu1\nmodule_exit\n//mod-\u003estate = MODULE_STATE_GOING\n  ip6table_nat_exit\n    xt_unregister_template\n\tkfree(t)\n\t//removed from templ_list\n\t\t\t\t      getinfo()\n\t\t\t\t\t  t = xt_find_table_lock\n\t\t\t\t\t\tlist_for_each_entry(tmpl, \u0026xt_templates[af]...)\n\t\t\t\t\t\t\tif (strcmp(tmpl-\u003ename, name))\n\t\t\t\t\t\t\t\tcontinue;  //table not found\n\t\t\t\t\t\t\ttry_module_get\n\t\t\t\t\t\tlist_for_each_entry(t, \u0026xt_net-\u003etables[af]...)\n\t\t\t\t\t\t\treturn t;  //not get refcnt\n\t\t\t\t\t  module_put(t-\u003eme) //uaf\n    unregister_pernet_subsys\n    //remove table from xt_net list\n\nWhile xt_table module was going away and has been removed from\nxt_templates list, we couldnt get refcnt of xt_table-\u003eme. Check\nmodule in xt_net-\u003etables list re-traversal to fix it."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-05-04T09:50:04.187Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/ba22ea01348384df19cc1fabc7964be6e7189749"
            },
            {
              "url": "https://git.kernel.org/stable/c/cb7c388b5967946f097afdb759b7c860305f2d96"
            },
            {
              "url": "https://git.kernel.org/stable/c/6a1f088f9807f5166f58902d26246d0b88da03a8"
            },
            {
              "url": "https://git.kernel.org/stable/c/bab3bb35c03b263c486833d50d50c081d9e9832b"
            },
            {
              "url": "https://git.kernel.org/stable/c/f48d258f0ac540f00fa617dac496c4c18b5dc2fa"
            }
          ],
          "title": "netfilter: Fix use-after-free in get_info()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-50257",
        "datePublished": "2024-11-09T10:15:10.373Z",
        "dateReserved": "2024-10-21T19:36:19.980Z",
        "dateUpdated": "2025-05-04T09:50:04.187Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.

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