{"id":"CVE-2026-63985","title":"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 < eepro…","summary":"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 < eepro…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.13, < 5.15.210","linux_kernel >= 5.16, < 6.1.176","linux_kernel >= 6.2, < 6.6.143","linux_kernel >= 6.7, < 6.12.93","linux_kernel >= 6.13, < 6.18.35","linux_kernel >= 6.19, < 7.0.12","linux_kernel = 7.1"],"patched":["linux_kernel 7.0.12"],"published":"2026-07-19","updated":"2026-10-07","sourceUpdated":"2026-10-07T20:51:41.920","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63985","references":[{"url":"https://git.kernel.org/stable/c/0e182689831277faf2ef683573a60474c208f690","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4fe1bc4b3603f621240d5b401742f302190db769","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/65674d2489a12b8efd2ca0effb3de1d12224b596","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/67cfdd9210b99f260b3e0afeb9525e0acc7be31e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6ed7ebe22e9c3e3e946b6973c1ce43d3c38aeac1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d81376053a00865c70b8d8506a1cb93f2943d413","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fd0de51c54fa8474a0ddeedd71c65ad09fada390","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00129,"epssPercentile":0.02191,"ingestedAt":"2026-10-07T21:54:15.078Z","slug":"CVE-2026-63985","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel >= 5.13, < 5.15.210`\n- `linux_kernel >= 5.16, < 6.1.176`\n- `linux_kernel >= 6.2, < 6.6.143`\n- `linux_kernel >= 6.7, < 6.12.93`\n- `linux_kernel >= 6.13, < 6.18.35`\n- `linux_kernel >= 6.19, < 7.0.12`\n- `linux_kernel = 7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.12`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}