{"dataType": "CVE_RECORD", "dataVersion": "5.1", "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": "2025-07-28T04:12:53.339Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-07-28T04:12:53.339Z"}, "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"}}}}

{}

{"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"}], "id": "CVE-2025-38126", "lastModified": "2025-07-03T15:13:53.147", "metrics": {}, "published": "2025-07-03T09:15:26.800", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"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"}