[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-CVE-2025-21931":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T20:55:29.923Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":39,"aliases":40,"duplicate_of":9,"upstream":41,"downstream":42,"duplicates":107,"related":108,"reserved_at":9,"published_at":120,"modified_at":121,"state":122,"summary":123,"references_raw":132,"kevs":159,"epss":160,"epss_history":163,"metrics":435,"affected":441},"CVE-2025-21931","In the Linux kernel, the following vulnerability has been resolved:\n\nhwpoison, memory_hotplug: lock folio before unmap hwpoisoned folio\n\nCommit b15c87263a69 (\"hwpoison, memory_hotplug: allow hwpoisoned pages to\nbe offlined) add page poison checks in do_migrate_range in order to make\noffline hwpoisoned page possible by introducing isolate_lru_page and\ntry_to_unmap for hwpoisoned page.  However folio lock must be held before\ncalling try_to_unmap.  Add it to fix this problem.\n\nWarning will be produced if folio is not locked during unmap:\n\n  ------------[ cut here ]------------\n  kernel BUG at ./include/linux/swapops.h:400!\n  Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP\n  Modules linked in:\n  CPU: 4 UID: 0 PID: 411 Comm: bash Tainted: G        W          6.13.0-rc1-00016-g3c434c7ee82a-dirty #41\n  Tainted: [W]=WARN\n  Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015\n  pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n  pc : try_to_unmap_one+0xb08/0xd3c\n  lr : try_to_unmap_one+0x3dc/0xd3c\n  Call trace:\n   try_to_unmap_one+0xb08/0xd3c (P)\n   try_to_unmap_one+0x3dc/0xd3c (L)\n   rmap_walk_anon+0xdc/0x1f8\n   rmap_walk+0x3c/0x58\n   try_to_unmap+0x88/0x90\n   unmap_poisoned_folio+0x30/0xa8\n   do_migrate_range+0x4a0/0x568\n   offline_pages+0x5a4/0x670\n   memory_block_action+0x17c/0x374\n   memory_subsys_offline+0x3c/0x78\n   device_offline+0xa4/0xd0\n   state_store+0x8c/0xf0\n   dev_attr_store+0x18/0x2c\n   sysfs_kf_write+0x44/0x54\n   kernfs_fop_write_iter+0x118/0x1a8\n   vfs_write+0x3a8/0x4bc\n   ksys_write+0x6c/0xf8\n   __arm64_sys_write+0x1c/0x28\n   invoke_syscall+0x44/0x100\n   el0_svc_common.constprop.0+0x40/0xe0\n   do_el0_svc+0x1c/0x28\n   el0_svc+0x30/0xd0\n   el0t_64_sync_handler+0xc8/0xcc\n   el0t_64_sync+0x198/0x19c\n  Code: f9407be0 b5fff320 d4210000 17ffff97 (d4210000)\n  ---[ end trace 0000000000000000 ]---",null,[11],{"_key":12,"id":12,"name":13,"description":14,"type":15,"status":16,"abstraction":17,"likelihood_of_exploit":9,"capec":18},"CWE-667","Improper Locking","The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.","weakness","Draft","Class",[19,31,35],{"id":20,"name":21,"techniques":22},"CAPEC-25","Forced Deadlock",[23],{"id":24,"name":25,"tactics":26,"countermeasures":30},"T1499.004","Application or System 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