CVE-2025-38126 (GCVE-0-2025-38126)
Vulnerability from cvelistv5
Published
2025-07-03 08:35
Modified
2025-07-28 04:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: make sure that ptp_rate is not 0 before configuring timestamping The stmmac platform drivers that do not open-code the clk_ptp_rate value after having retrieved the default one from the device-tree can end up with 0 in clk_ptp_rate (as clk_get_rate can return 0). It will eventually propagate up to PTP initialization when bringing up the interface, leading to a divide by 0: Division by zero in kernel. CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.30-00001-g48313bd5768a #22 Hardware name: STM32 (Device Tree Support) Call trace: unwind_backtrace from show_stack+0x18/0x1c show_stack from dump_stack_lvl+0x6c/0x8c dump_stack_lvl from Ldiv0_64+0x8/0x18 Ldiv0_64 from stmmac_init_tstamp_counter+0x190/0x1a4 stmmac_init_tstamp_counter from stmmac_hw_setup+0xc1c/0x111c stmmac_hw_setup from __stmmac_open+0x18c/0x434 __stmmac_open from stmmac_open+0x3c/0xbc stmmac_open from __dev_open+0xf4/0x1ac __dev_open from __dev_change_flags+0x1cc/0x224 __dev_change_flags from dev_change_flags+0x24/0x60 dev_change_flags from ip_auto_config+0x2e8/0x11a0 ip_auto_config from do_one_initcall+0x84/0x33c do_one_initcall from kernel_init_freeable+0x1b8/0x214 kernel_init_freeable from kernel_init+0x24/0x140 kernel_init from ret_from_fork+0x14/0x28 Exception stack(0xe0815fb0 to 0xe0815ff8) Prevent this division by 0 by adding an explicit check and error log about the actual issue. While at it, remove the same check from stmmac_ptp_register, which then becomes duplicate
References
Impacted products
Vendor Product Version
Linux Linux Version: 19d857c9038e5c07db8f8cc02b5ad0cd0098714f
Version: 19d857c9038e5c07db8f8cc02b5ad0cd0098714f
Version: 19d857c9038e5c07db8f8cc02b5ad0cd0098714f
Version: 19d857c9038e5c07db8f8cc02b5ad0cd0098714f
Version: 19d857c9038e5c07db8f8cc02b5ad0cd0098714f
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c",
            "drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "32af9c289234990752281c805500dfe03c5b2b8f",
              "status": "affected",
              "version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f",
              "versionType": "git"
            },
            {
              "lessThan": "b263088ee8ab14563817a8be3519af8e25225793",
              "status": "affected",
              "version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f",
              "versionType": "git"
            },
            {
              "lessThan": "bb033c6781ce1b0264c3993b767b4aa9021959c2",
              "status": "affected",
              "version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f",
              "versionType": "git"
            },
            {
              "lessThan": "379cd990dfe752b38fcf46034698a9a150626c7a",
              "status": "affected",
              "version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f",
              "versionType": "git"
            },
            {
              "lessThan": "030ce919e114a111e83b7976ecb3597cefd33f26",
              "status": "affected",
              "version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c",
            "drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.5"
            },
            {
              "lessThan": "4.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.142",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.94",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.34",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.3",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: make sure that ptp_rate is not 0 before configuring timestamping\n\nThe stmmac platform drivers that do not open-code the clk_ptp_rate value\nafter having retrieved the default one from the device-tree can end up\nwith 0 in clk_ptp_rate (as clk_get_rate can return 0). It will\neventually propagate up to PTP initialization when bringing up the\ninterface, leading to a divide by 0:\n\n Division by zero in kernel.\n CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.30-00001-g48313bd5768a #22\n Hardware name: STM32 (Device Tree Support)\n Call trace:\n  unwind_backtrace from show_stack+0x18/0x1c\n  show_stack from dump_stack_lvl+0x6c/0x8c\n  dump_stack_lvl from Ldiv0_64+0x8/0x18\n  Ldiv0_64 from stmmac_init_tstamp_counter+0x190/0x1a4\n  stmmac_init_tstamp_counter from stmmac_hw_setup+0xc1c/0x111c\n  stmmac_hw_setup from __stmmac_open+0x18c/0x434\n  __stmmac_open from stmmac_open+0x3c/0xbc\n  stmmac_open from __dev_open+0xf4/0x1ac\n  __dev_open from __dev_change_flags+0x1cc/0x224\n  __dev_change_flags from dev_change_flags+0x24/0x60\n  dev_change_flags from ip_auto_config+0x2e8/0x11a0\n  ip_auto_config from do_one_initcall+0x84/0x33c\n  do_one_initcall from kernel_init_freeable+0x1b8/0x214\n  kernel_init_freeable from kernel_init+0x24/0x140\n  kernel_init from ret_from_fork+0x14/0x28\n Exception stack(0xe0815fb0 to 0xe0815ff8)\n\nPrevent this division by 0 by adding an explicit check and error log\nabout the actual issue. While at it, remove the same check from\nstmmac_ptp_register, which then becomes duplicate"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:12:53.339Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/32af9c289234990752281c805500dfe03c5b2b8f"
        },
        {
          "url": "https://git.kernel.org/stable/c/b263088ee8ab14563817a8be3519af8e25225793"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb033c6781ce1b0264c3993b767b4aa9021959c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/379cd990dfe752b38fcf46034698a9a150626c7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/030ce919e114a111e83b7976ecb3597cefd33f26"
        }
      ],
      "title": "net: stmmac: make sure that ptp_rate is not 0 before configuring timestamping",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38126",
    "datePublished": "2025-07-03T08:35:31.812Z",
    "dateReserved": "2025-04-16T04:51:23.986Z",
    "dateUpdated": "2025-07-28T04:12:53.339Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38126\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-03T09:15:26.800\",\"lastModified\":\"2025-07-03T15:13:53.147\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: stmmac: make sure that ptp_rate is not 0 before configuring timestamping\\n\\nThe stmmac platform drivers that do not open-code the clk_ptp_rate value\\nafter having retrieved the default one from the device-tree can end up\\nwith 0 in clk_ptp_rate (as clk_get_rate can return 0). It will\\neventually propagate up to PTP initialization when bringing up the\\ninterface, leading to a divide by 0:\\n\\n Division by zero in kernel.\\n CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.30-00001-g48313bd5768a #22\\n Hardware name: STM32 (Device Tree Support)\\n Call trace:\\n  unwind_backtrace from show_stack+0x18/0x1c\\n  show_stack from dump_stack_lvl+0x6c/0x8c\\n  dump_stack_lvl from Ldiv0_64+0x8/0x18\\n  Ldiv0_64 from stmmac_init_tstamp_counter+0x190/0x1a4\\n  stmmac_init_tstamp_counter from stmmac_hw_setup+0xc1c/0x111c\\n  stmmac_hw_setup from __stmmac_open+0x18c/0x434\\n  __stmmac_open from stmmac_open+0x3c/0xbc\\n  stmmac_open from __dev_open+0xf4/0x1ac\\n  __dev_open from __dev_change_flags+0x1cc/0x224\\n  __dev_change_flags from dev_change_flags+0x24/0x60\\n  dev_change_flags from ip_auto_config+0x2e8/0x11a0\\n  ip_auto_config from do_one_initcall+0x84/0x33c\\n  do_one_initcall from kernel_init_freeable+0x1b8/0x214\\n  kernel_init_freeable from kernel_init+0x24/0x140\\n  kernel_init from ret_from_fork+0x14/0x28\\n Exception stack(0xe0815fb0 to 0xe0815ff8)\\n\\nPrevent this division by 0 by adding an explicit check and error log\\nabout the actual issue. While at it, remove the same check from\\nstmmac_ptp_register, which then becomes duplicate\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: stmmac: aseg\u00farese de que ptp_rate no sea 0 antes de configurar el sellado de tiempo. Los controladores de la plataforma stmmac que no incluyen en c\u00f3digo abierto el valor clk_ptp_rate tras obtener el predeterminado del \u00e1rbol de dispositivos pueden terminar con 0 en clk_ptp_rate (ya que clk_get_rate puede devolver 0). Esto se propagar\u00e1 hasta la inicializaci\u00f3n de PTP al iniciar la interfaz, lo que provocar\u00e1 una divisi\u00f3n por 0: Divisi\u00f3n por cero en el kernel. CPU: 1 UID: 0 PID: 1 Comm: swapper/0 No contaminado 6.12.30-00001-g48313bd5768a #22 Nombre del hardware: STM32 (Compatibilidad con \u00e1rbol de dispositivos) Rastreo de llamadas: unwind_backtrace from show_stack+0x18/0x1c show_stack from dump_stack_lvl+0x6c/0x8c dump_stack_lvl from Ldiv0_64+0x8/0x18 Ldiv0_64 from stmmac_init_tstamp_counter+0x190/0x1a4 stmmac_init_tstamp_counter from stmmac_hw_setup+0xc1c/0x111c stmmac_hw_setup from __stmmac_open+0x18c/0x434 __stmmac_open from stmmac_open+0x3c/0xbc stmmac_open from __dev_open+0xf4/0x1ac __dev_open from __dev_change_flags+0x1cc/0x224 __dev_change_flags from dev_change_flags+0x24/0x60 dev_change_flags from ip_auto_config+0x2e8/0x11a0 ip_auto_config from do_one_initcall+0x84/0x33c do_one_initcall from kernel_init_freeable+0x1b8/0x214 kernel_init_freeable from kernel_init+0x24/0x140 kernel_init from ret_from_fork+0x14/0x28 Exception stack(0xe0815fb0 to 0xe0815ff8) Evite esta divisi\u00f3n por 0 sumando Una comprobaci\u00f3n expl\u00edcita y un registro de errores sobre el problema. Mientras tanto, elimine la misma comprobaci\u00f3n de stmmac_ptp_register, que se convierte en un duplicado.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/030ce919e114a111e83b7976ecb3597cefd33f26\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/32af9c289234990752281c805500dfe03c5b2b8f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/379cd990dfe752b38fcf46034698a9a150626c7a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b263088ee8ab14563817a8be3519af8e25225793\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bb033c6781ce1b0264c3993b767b4aa9021959c2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.