{"schema_version":"1.9.0","id":"CVE-2026-63985","published":"2026-07-19T14:56:07.527Z","modified":"2026-08-12T03:51:46.603220658Z","summary":"ethtool: eeprom: add more safeties to EEPROM Netlink fallback","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nethtool: eeprom: add more safeties to EEPROM Netlink fallback\n\nThe Netlink fallback path for reading module EEPROM\n(fallback_set_params()) validates that offset < eeprom_len,\nbut does not check that offset + length stays within eeprom_len.\nThe ioctl equivalent (ethtool_get_any_eeprom() in ioctl.c) has\nalways enforced both bounds:\n\n  if (eeprom.offset + eeprom.len > total_len)\n      return -EINVAL;\n\nThis could lead to surprises in both drivers and device FW.\nAdd the missing offset + length validation to fallback_set_params(),\nmirroring the ioctl.\n\nSimilarly - ethtool core in general, and ethtool_get_any_eeprom()\nin particular tries to zero-init all buffers passed to the drivers\nto avoid any extra work of zeroing things out. eeprom_fallback()\nuses a plain kmalloc(), change it to zalloc.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"96d971e307cc0e434f96329b42bbd98cfbca07d2"},{"fixed":"0e182689831277faf2ef683573a60474c208f690"},{"fixed":"6ed7ebe22e9c3e3e946b6973c1ce43d3c38aeac1"},{"fixed":"65674d2489a12b8efd2ca0effb3de1d12224b596"},{"fixed":"d81376053a00865c70b8d8506a1cb93f2943d413"},{"fixed":"fd0de51c54fa8474a0ddeedd71c65ad09fada390"},{"fixed":"4fe1bc4b3603f621240d5b401742f302190db769"},{"fixed":"67cfdd9210b99f260b3e0afeb9525e0acc7be31e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63985.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.13.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.176"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.93"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.35"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63985.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0e182689831277faf2ef683573a60474c208f690"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4fe1bc4b3603f621240d5b401742f302190db769"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65674d2489a12b8efd2ca0effb3de1d12224b596"},{"type":"WEB","url":"https://git.kernel.org/stable/c/67cfdd9210b99f260b3e0afeb9525e0acc7be31e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ed7ebe22e9c3e3e946b6973c1ce43d3c38aeac1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d81376053a00865c70b8d8506a1cb93f2943d413"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fd0de51c54fa8474a0ddeedd71c65ad09fada390"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63985.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63985"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63985.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}