{"id":"CVE-2023-52505","summary":"phy: lynx-28g: serialize concurrent phy_set_mode_ext() calls to shared registers","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nphy: lynx-28g: serialize concurrent phy_set_mode_ext() calls to shared registers\n\nThe protocol converter configuration registers PCC8, PCCC, PCCD\n(implemented by the driver), as well as others, control protocol\nconverters from multiple lanes (each represented as a different\nstruct phy). So, if there are simultaneous calls to phy_set_mode_ext()\nto lanes sharing the same PCC register (either for the \"old\" or for the\n\"new\" protocol), corruption of the values programmed to hardware is\npossible, because lynx_28g_rmw() has no locking.\n\nAdd a spinlock in the struct lynx_28g_priv shared by all lanes, and take\nthe global spinlock from the phy_ops :: set_mode() implementation. There\nare no other callers which modify PCC registers.","modified":"2026-08-12T03:51:31.928280058Z","published":"2024-03-02T21:52:19.215Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52505.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/139ad1143151a07be93bf741d4ea7c89e59f89ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6f901f8448c6b25ed843796b114471d2a3fc5dfb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c2d7c79898b427d263c64a4841987eec131f2d4e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52505.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52505"},{"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":"8f73b37cf3fbda67ea1e579c3b5785da4e7aa2e3"},{"fixed":"6f901f8448c6b25ed843796b114471d2a3fc5dfb"},{"fixed":"c2d7c79898b427d263c64a4841987eec131f2d4e"},{"fixed":"139ad1143151a07be93bf741d4ea7c89e59f89ce"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52505.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.18.0"},{"fixed":"6.1.59"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.5.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52505.json"}}],"schema_version":"1.9.0"}