{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64228","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.771Z","datePublished":"2026-07-24T15:23:11.510Z","dateUpdated":"2026-07-24T15:23:11.510Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-07-24T15:23:11.510Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethtool: phy: avoid NULL deref when PHY driver is unbound\n\nphydev->drv can become NULL while the phy_device is still attached to\nits net_device, namely after the PHY driver is unbound via sysfs:\n\n\techo <mdio_id> > /sys/bus/mdio_bus/drivers/<phy_drv>/unbind\n\nphy_remove() clears phydev->drv but doesn't call phy_detach(), so the\nphy_device stays in the link topology xarray and ethnl_req_get_phydev()\nstill hands it back. ETHTOOL_MSG_PHY_GET then oopses on:\n\n\trep_data->drvname = kstrdup(phydev->drv->name, GFP_KERNEL);\n\ndrvname is already treated as optional by phy_reply_size(),\nphy_fill_reply() and phy_cleanup_data(), so just skip the allocation\nwhen there is no driver bound."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ethtool/phy.c"],"versions":[{"version":"9dd2ad5e92b962d1349a7541d167e8e214e49f95","lessThan":"3586924625559e6f9876d726c80ff0a75f0d5849","status":"affected","versionType":"git"},{"version":"9dd2ad5e92b962d1349a7541d167e8e214e49f95","lessThan":"17fe2381f967d353183f374a1c0181a6d194158c","status":"affected","versionType":"git"},{"version":"9dd2ad5e92b962d1349a7541d167e8e214e49f95","lessThan":"e3adf69f8eb121a9128c2b0029efd050d3649153","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ethtool/phy.c"],"versions":[{"version":"6.16","status":"affected"},{"version":"0","lessThan":"6.16","status":"unaffected","versionType":"semver"},{"version":"6.18.34","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.11","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"6.16","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3586924625559e6f9876d726c80ff0a75f0d5849"},{"url":"https://git.kernel.org/stable/c/17fe2381f967d353183f374a1c0181a6d194158c"},{"url":"https://git.kernel.org/stable/c/e3adf69f8eb121a9128c2b0029efd050d3649153"}],"title":"net: ethtool: phy: avoid NULL deref when PHY driver is unbound","x_generator":{"engine":"bippy-1.2.0"}}}}