{"id":"CVE-2026-53231","summary":"net: phy: don't try to setup PHY-driven SFP cages when using genphy","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: don't try to setup PHY-driven SFP cages when using genphy\n\nWe don't have support for PHY-driver SFP cages with the genphy code.\n\nOn top of that, it was found by sashiko that running\nsfp_bus_add_upstream() for genphy deadlocks, as for genphy the PHY\nprobing runs under RTNL, which isn't the case for non-genphy drivers.\n\nThis problem was reproduced, and does lead to a deadlock on RTNL.\n\nBefore the blamed commit, the phy_sfp_probe() call was made by\nindividual PHY drivers, so there was no way to get to the SFP probing\npath when using genphy.\n\nLet's therefore only run phy_sfp_probe when not using genphy.","modified":"2026-07-08T08:09:46.437423547Z","published":"2026-06-25T08:39:29.871Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53231.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5a0082ec20a05ef2378410323a5089a8f1786f4a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef8d739eee6f85303cbecebc01eb72f063de74e0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53231.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53231"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"bad869b5e41a08424ff130fd6bb41b854be70095"},{"fixed":"ef8d739eee6f85303cbecebc01eb72f063de74e0"},{"fixed":"5a0082ec20a05ef2378410323a5089a8f1786f4a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53231.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.0.0"},{"fixed":"7.0.13"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53231.json"}}],"schema_version":"1.7.5"}