[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-CVE-2025-21709":6},{"stargazers_count":4,"fetched_at":5},7,"2026-07-31T17:19:26.604Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":18,"aliases":19,"duplicate_of":9,"upstream":20,"downstream":21,"duplicates":30,"related":31,"reserved_at":9,"published_at":34,"modified_at":35,"state":36,"summary":37,"references_raw":46,"kevs":61,"epss":62,"epss_history":65,"metrics":335,"affected":341},"CVE-2025-21709","In the Linux kernel, the following vulnerability has been resolved:\n\nkernel: be more careful about dup_mmap() failures and uprobe registering\n\nIf a memory allocation fails during dup_mmap(), the maple tree can be left\nin an unsafe state for other iterators besides the exit path.  All the\nlocks are dropped before the exit_mmap() call (in mm/mmap.c), but the\nincomplete mm_struct can be reached through (at least) the rmap finding\nthe vmas which have a pointer back to the mm_struct.\n\nUp to this point, there have been no issues with being able to find an\nmm_struct that was only partially initialised.  Syzbot was able to make\nthe incomplete mm_struct fail with recent forking changes, so it has been\nproven unsafe to use the mm_struct that hasn't been initialised, as\nreferenced in the link below.\n\nAlthough 8ac662f5da19f (\"fork: avoid inappropriate uprobe access to\ninvalid mm\") fixed the uprobe access, it does not completely remove the\nrace.\n\nThis patch sets the MMF_OOM_SKIP to avoid the iteration of the vmas on the\noom side (even though this is extremely unlikely to be selected as an oom\nvictim in the race window), and sets MMF_UNSTABLE to avoid other potential\nusers from using a partially initialised mm_struct.\n\nWhen registering vmas for uprobe, skip the vmas in an mm that is marked\nunstable.  Modifying a vma in an unstable mm may cause issues if the mm\nisn't fully initialised.",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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