{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38126", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.986Z", "datePublished": "2025-07-03T08:35:31.812Z", "dateUpdated": "2026-05-11T21:21:45.819Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:21:45.819Z"}, "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"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/stmicro/stmmac/stmmac_main.c", "drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c"], "versions": [{"version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f", "lessThan": "32af9c289234990752281c805500dfe03c5b2b8f", "status": "affected", "versionType": "git"}, {"version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f", "lessThan": "b263088ee8ab14563817a8be3519af8e25225793", "status": "affected", "versionType": "git"}, {"version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f", "lessThan": "bb033c6781ce1b0264c3993b767b4aa9021959c2", "status": "affected", "versionType": "git"}, {"version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f", "lessThan": "379cd990dfe752b38fcf46034698a9a150626c7a", "status": "affected", "versionType": "git"}, {"version": "19d857c9038e5c07db8f8cc02b5ad0cd0098714f", "lessThan": "030ce919e114a111e83b7976ecb3597cefd33f26", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/stmicro/stmmac/stmmac_main.c", "drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c"], "versions": [{"version": "4.5", "status": "affected"}, {"version": "0", "lessThan": "4.5", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.142", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.94", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.34", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.3", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.1.142"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.6.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.12.34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.15.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.16"}]}]}], "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"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:34:24.171Z"}}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "46958376-EFF7-4A53-A2EC-DBCD91DED7E6", "versionEndExcluding": "6.1.142", "versionStartIncluding": "4.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "304E3F01-7D7A-4908-994E-7F95C5C00B06", "versionEndExcluding": "6.6.94", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4FFA54AA-CDFE-4591-BD07-72813D0948F4", "versionEndExcluding": "6.12.34", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0541C761-BD5E-4C1A-8432-83B375D7EB92", "versionEndExcluding": "6.15.3", "versionStartIncluding": "6.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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."}], "id": "CVE-2025-38126", "lastModified": "2025-12-17T18:12:12.670", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-07-03T09:15:26.800", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/030ce919e114a111e83b7976ecb3597cefd33f26"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/32af9c289234990752281c805500dfe03c5b2b8f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/379cd990dfe752b38fcf46034698a9a150626c7a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b263088ee8ab14563817a8be3519af8e25225793"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bb033c6781ce1b0264c3993b767b4aa9021959c2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-369"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: stmmac: make sure that ptp_rate is not 0 before configuring timestamping", "id": "2376045", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2376045"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: stmmac: make sure that ptp_rate is not 0 before configuring timestamping\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:\nDivision by zero in kernel.\nCPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.30-00001-g48313bd5768a #22\nHardware name: STM32 (Device Tree Support)\nCall trace:\nunwind_backtrace from show_stack+0x18/0x1c\nshow_stack from dump_stack_lvl+0x6c/0x8c\ndump_stack_lvl from Ldiv0_64+0x8/0x18\nLdiv0_64 from stmmac_init_tstamp_counter+0x190/0x1a4\nstmmac_init_tstamp_counter from stmmac_hw_setup+0xc1c/0x111c\nstmmac_hw_setup from __stmmac_open+0x18c/0x434\n__stmmac_open from stmmac_open+0x3c/0xbc\nstmmac_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\ndev_change_flags from ip_auto_config+0x2e8/0x11a0\nip_auto_config from do_one_initcall+0x84/0x33c\ndo_one_initcall from kernel_init_freeable+0x1b8/0x214\nkernel_init_freeable from kernel_init+0x24/0x140\nkernel_init from ret_from_fork+0x14/0x28\nException stack(0xe0815fb0 to 0xe0815ff8)\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"], "name": "CVE-2025-38126", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-07-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38126\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38126\nhttps://lore.kernel.org/linux-cve-announce/2025070329-CVE-2025-38126-3c9b@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-06T22:16:23.134341+00:00", "updated": "2025-07-06T22:16:23.134392+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}