CVE-2025-71181

{"id": "CVE-2025-71181", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2026-01-31T12:16:03.353", "references": [{"url": "https://git.kernel.org/stable/c/30a98c97f7874031f2e1de19c777ce011143cba4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/361e0ff456a8daf9753c18030533256e4133ce7a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-667"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrust_binder: remove spin_lock() in rust_shrink_free_page()\n\nWhen forward-porting Rust Binder to 6.18, I neglected to take commit\nfb56fdf8b9a2 (\"mm/list_lru: split the lock to per-cgroup scope\") into\naccount, and apparently I did not end up running the shrinker callback\nwhen I sanity tested the driver before submission. This leads to crashes\nlike the following:\n\n\t============================================\n\tWARNING: possible recursive locking detected\n\t6.18.0-mainline-maybe-dirty #1 Tainted: G IO\n\t--------------------------------------------\n\tkswapd0/68 is trying to acquire lock:\n\tffff956000fa18b0 (&l->lock){+.+.}-{2:2}, at: lock_list_lru_of_memcg+0x128/0x230\n\n\tbut task is already holding lock:\n\tffff956000fa18b0 (&l->lock){+.+.}-{2:2}, at: rust_helper_spin_lock+0xd/0x20\n\n\tother info that might help us debug this:\n\t Possible unsafe locking scenario:\n\n\t CPU0\n\t ----\n\t lock(&l->lock);\n\t lock(&l->lock);\n\n\t *** DEADLOCK ***\n\n\t May be due to missing lock nesting notation\n\n\t3 locks held by kswapd0/68:\n\t #0: ffffffff90d2e260 (fs_reclaim){+.+.}-{0:0}, at: kswapd+0x597/0x1160\n\t #1: ffff956000fa18b0 (&l->lock){+.+.}-{2:2}, at: rust_helper_spin_lock+0xd/0x20\n\t #2: ffffffff90cf3680 (rcu_read_lock){....}-{1:2}, at: lock_list_lru_of_memcg+0x2d/0x230\n\nTo fix this, remove the spin_lock() call from rust_shrink_free_page()."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nrust_binder: eliminar spin_lock() en rust_shrink_free_page()\n\nAl portar Rust Binder a la versi\u00f3n 6.18, descuid\u00e9 tener en cuenta el commit fb56fdf8b9a2 ('mm/list_lru: split the lock to per-cgroup scope'), y aparentemente no termin\u00e9 ejecutando la devoluci\u00f3n de llamada del reductor cuando prob\u00e9 la cordura del controlador antes de la entrega. Esto lleva a fallos como el siguiente:\n\n\t============================================\n\tADVERTENCIA: posible bloqueo recursivo detectado\n\t6.18.0-mainline-maybe-dirty #1 Tainted: G IO\n\t--------------------------------------------\n\tkswapd0/68 est\u00e1 intentando adquirir el bloqueo:\n\tffff956000fa18b0 (&l->lock){+.+.}-{2:2}, en: lock_list_lru_of_memcg+0x128/0x230\n\n\tpero la tarea ya est\u00e1 manteniendo el bloqueo:\n\tffff956000fa18b0 (&l->lock){+.+.}-{2:2}, en: rust_helper_spin_lock+0xd/0x20\n\n\totra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto:\n\t Posible escenario de bloqueo inseguro:\n\n\t CPU0\n\t ----\n\t lock(&l->lock);\n\t lock(&l->lock);\n\n\t * INTERBLOQUEO *\n\n\t Puede deberse a la falta de notaci\u00f3n de anidamiento de bloqueo\n\n\t3 bloqueos mantenidos por kswapd0/68:\n\t #0: ffffffff90d2e260 (fs_reclaim){+.+.}-{0:0}, en: kswapd+0x597/0x1160\n\t #1: ffff956000fa18b0 (&l->lock){+.+.}-{2:2}, en: rust_helper_spin_lock+0xd/0x20\n\t #2: ffffffff90cf3680 (rcu_read_lock){....}-{1:2}, en: lock_list_lru_of_memcg+0x2d/0x230\n\nPara solucionar esto, elimine la llamada a spin_lock() de rust_shrink_free_page()."}], "lastModified": "2026-03-25T19:43:46.447", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "244757F1-F957-45E1-ADDD-D008246BCF53", "versionEndExcluding": "6.18.6", "versionStartIncluding": "6.18.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DCE57113-2223-4308-A0F2-5E6ECFBB3C23"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EF854A1-ABB1-4E93-BE9A-44569EC76C0D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EB5B7DFC-C36B-45D8-922C-877569FDDF43"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}