{"id":"CVE-2026-80564","summary":"gve: fix NULL dereference due to missing ptp adjfine","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ngve: fix NULL dereference due to missing ptp adjfine\n\nFix NULL dereference due to missing implementation of adjfine, which can\nbe triggered from usermode as follows:\n\nsudo ./testptp -d /dev/ptp0 -f 0\n[  551.943697] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[...]\n[  552.061946] Call Trace:\n[  552.064487]  \u003cTASK\u003e\n[  552.066681]  ptp_clock_adjtime+0x1c0/0x2c0\n[  552.070874]  ? get_clock_desc+0x6b/0xb0\n[  552.074825]  pc_clock_adjtime+0x78/0xc0\n[  552.078755]  __do_sys_clock_adjtime+0x85/0x110\n[  552.083293]  do_syscall_64+0xea/0x610","modified":"2026-08-28T11:48:23.508038573Z","published":"2026-08-26T14:37:28.351Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80564.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3992ced109c70b771efad9e51ae68e5c7a04dea3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e9482feeed66d4bc805458631013e9b61b1a9eaf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fa9b991bf678dd412dc0ed080672d34d7558d7af"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80564.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80564"},{"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":"acd16380523b400400523fe54c7499320e558e80"},{"fixed":"e9482feeed66d4bc805458631013e9b61b1a9eaf"},{"fixed":"fa9b991bf678dd412dc0ed080672d34d7558d7af"},{"fixed":"3992ced109c70b771efad9e51ae68e5c7a04dea3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80564.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.17.0"},{"fixed":"6.18.46"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80564.json"}}],"schema_version":"1.9.0"}