{"id":"CVE-2026-72045","summary":"octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF\n\nrvu_mbox_handler_lmtst_tbl_setup() uses req-\u003ebase_pcifunc as a direct\nindex into the LMT map table to read another function's LMTLINE\nphysical base address and copy it into the caller's own LMT map table\nentry. The mailbox dispatcher authenticates req-\u003ehdr.pcifunc from the\nIRQ source, but req-\u003ebase_pcifunc is a separate payload field and is\nnot sanitized.\n\nReject the request with -EPERM when a VF caller's base_pcifunc is not a\nvalid function under its own PF. is_pf_func_valid() bounds the FUNC field\nto the PF's configured VF count, keeping the computed index inside the\ncaller's own slot block.","modified":"2026-08-18T03:56:36.602807269Z","published":"2026-08-15T05:52:04.038Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72045.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/54535692bec9ef464adc714108eb19e49e38b5a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/59da37fee81a8d76079313348ca13c5bc90dd6ae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c73b8795b45f4ad5a95120d2e9b435ea4616e08e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72045.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72045"},{"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":"893ae97214c385be02f8ec097298cc48c7f0d905"},{"fixed":"e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11"},{"fixed":"54535692bec9ef464adc714108eb19e49e38b5a2"},{"fixed":"c73b8795b45f4ad5a95120d2e9b435ea4616e08e"},{"fixed":"59da37fee81a8d76079313348ca13c5bc90dd6ae"},{"fixed":"8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72045.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.14.0"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72045.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}