CVE-2024-41051

{"id": "CVE-2024-41051", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-07-29T15:15:13.327", "references": [{"url": "https://git.kernel.org/stable/c/12e009d60852f7bce0afc373ca0b320f14150418", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b26525b2183632f16a3a4108fe6a4bfa8afac6ed", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d3179bae72b1b5e555ba839d6d9f40a350a4d78a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ec9289369259d982e735a71437e32e6b4035290c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/12e009d60852f7bce0afc373ca0b320f14150418", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/b26525b2183632f16a3a4108fe6a4bfa8afac6ed", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/d3179bae72b1b5e555ba839d6d9f40a350a4d78a", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/ec9289369259d982e735a71437e32e6b4035290c", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: wait for ondemand_object_worker to finish when dropping object\n\nWhen queuing ondemand_object_worker() to re-open the object,\ncachefiles_object is not pinned. The cachefiles_object may be freed when\nthe pending read request is completed intentionally and the related\nerofs is umounted. If ondemand_object_worker() runs after the object is\nfreed, it will incur use-after-free problem as shown below.\n\nprocess A processs B process C process D\n\ncachefiles_ondemand_send_req()\n// send a read req X\n// wait for its completion\n\n // close ondemand fd\n cachefiles_ondemand_fd_release()\n // set object as CLOSE\n\n cachefiles_ondemand_daemon_read()\n // set object as REOPENING\n queue_work(fscache_wq, &info->ondemand_work)\n\n // close /dev/cachefiles\n cachefiles_daemon_release\n cachefiles_flush_reqs\n complete(&req->done)\n\n// read req X is completed\n// umount the erofs fs\ncachefiles_put_object()\n// object will be freed\ncachefiles_ondemand_deinit_obj_info()\nkmem_cache_free(object)\n // both info and object are freed\n ondemand_object_worker()\n\nWhen dropping an object, it is no longer necessary to reopen the object,\nso use cancel_work_sync() to cancel or wait for ondemand_object_worker()\nto finish."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cachefiles: espere a que finalice ondemand_object_worker al soltar el objeto Al poner en cola ondemand_object_worker() para volver a abrir el objeto, cachefiles_object no est\u00e1 fijado. El objeto cachefiles_object se puede liberar cuando la solicitud de lectura pendiente se completa intencionalmente y se desmontan los erofs relacionados. Si ondemand_object_worker() se ejecuta despu\u00e9s de liberar el objeto, incurrir\u00e1 en un problema de use after free como se muestra a continuaci\u00f3n. proceso A procesos B proceso C proceso D cachefiles_ondemand_send_req() // env\u00eda una solicitud de lectura X // espera a que se complete // cierra ondemand fd cachefiles_ondemand_fd_release() // establece el objeto como CERRAR cachefiles_ondemand_daemon_read() // establece el objeto como REAPERTURA queue_work(fscache_wq , &info->ondemand_work) // cerrar /dev/cachefiles cachefiles_daemon_release cachefiles_flush_reqs complete(&req->done) // leer la solicitud X est\u00e1 completa // desmontar el erofs fs cachefiles_put_object() // el objeto ser\u00e1 liberado cachefiles_ondemand_deinit_obj_info() kmem_cache_free(object ) // tanto la informaci\u00f3n como el objeto se liberan ondemand_object_worker() Cuando se suelta un objeto, ya no es necesario volver a abrirlo, as\u00ed que use cancel_work_sync() para cancelar o espere a que finalice ondemand_object_worker()."}], "lastModified": "2025-09-25T19:49:59.627", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9660509A-A7A9-4DF8-9C10-10EB2BE6B935", "versionEndExcluding": "6.1.100", "versionStartIncluding": "6.1.95"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "18E36DFA-0FEF-4794-B395-77264588DD12", "versionEndExcluding": "6.6.41", "versionStartIncluding": "6.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6FAC1A24-181A-4DB7-801D-4BDF1B4E4116", "versionEndExcluding": "6.9.10", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2EBB4392-5FA6-4DA9-9772-8F9C750109FA"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "331C2F14-12C7-45D5-893D-8C52EE38EA10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3173713D-909A-4DD3-9DD4-1E171EB057EE"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "79F18AFA-40F7-43F0-BA30-7BDB65F918B9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BD973AA4-A789-49BD-8D57-B2846935D3C7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8F3E9E0C-AC3E-4967-AF80-6483E8AB0078"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "11AF4CB9-F697-4EA4-8903-8F9417EFDA8E"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}