[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-CVE-2025-21872":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T14:53:31.930Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":18,"aliases":19,"duplicate_of":9,"upstream":20,"downstream":21,"duplicates":82,"related":83,"reserved_at":9,"published_at":97,"modified_at":98,"state":99,"summary":100,"references_raw":109,"kevs":136,"epss":137,"epss_history":140,"metrics":415,"affected":421},"CVE-2025-21872","In the Linux kernel, the following vulnerability has been resolved:\n\nefi: Don't map the entire mokvar table to determine its size\n\nCurrently, when validating the mokvar table, we (re)map the entire table\non each iteration of the loop, adding space as we discover new entries.\nIf the table grows over a certain size, this fails due to limitations of\nearly_memmap(), and we get a failure and traceback:\n\n  ------------[ cut here ]------------\n  WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:139 __early_ioremap+0xef/0x220\n  ...\n  Call Trace:\n   \u003CTASK>\n   ? __early_ioremap+0xef/0x220\n   ? __warn.cold+0x93/0xfa\n   ? __early_ioremap+0xef/0x220\n   ? report_bug+0xff/0x140\n   ? early_fixup_exception+0x5d/0xb0\n   ? early_idt_handler_common+0x2f/0x3a\n   ? __early_ioremap+0xef/0x220\n   ? efi_mokvar_table_init+0xce/0x1d0\n   ? setup_arch+0x864/0xc10\n   ? start_kernel+0x6b/0xa10\n   ? x86_64_start_reservations+0x24/0x30\n   ? x86_64_start_kernel+0xed/0xf0\n   ? common_startup_64+0x13e/0x141\n   \u003C/TASK>\n  ---[ end trace 0000000000000000 ]---\n  mokvar: Failed to map EFI MOKvar config table pa=0x7c4c3000, size=265187.\n\nMapping the entire structure isn't actually necessary, as we don't ever\nneed more than one entry header mapped at once.\n\nChanges efi_mokvar_table_init() to only map each entry header, not the\nentire table, when determining the table size.  Since we're not mapping\nany data past the variable name, it also changes the code to enforce\nthat each variable name is NUL terminated, rather than attempting to\nverify it in place.",null,[11],{"_key":12,"id":12,"name":13,"description":14,"type":15,"status":16,"abstraction":9,"likelihood_of_exploit":9,"capec":17},"NVD-CWE-NOINFO","Insufficient Information","NVD uses this CWE ID when there is insufficient information to assign a specific 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