{ "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" } } ] } }