CVE-2024-46715

{"id": "CVE-2024-46715", "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": "2024-09-18T07:15:03.130", "references": [{"url": "https://git.kernel.org/stable/c/0cc7e0ee31e5c44904e98e2229d591e093282a70", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/72f022ebb9deac28663fa4c04ba315ed5d6654d1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c4ec8dedca961db056ec85cb7ca8c9f7e2e92252", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/dc537a72f64890d883d24ae4ac58733fc5bc523d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndriver: iio: add missing checks on iio_info's callback access\n\nSome callbacks from iio_info structure are accessed without any check, so\nif a driver doesn't implement them trying to access the corresponding\nsysfs entries produce a kernel oops such as:\n\n[ 2203.527791] Unable to handle kernel NULL pointer dereference at virtual address 00000000 when execute\n[...]\n[ 2203.783416] Call trace:\n[ 2203.783429] iio_read_channel_info_avail from dev_attr_show+0x18/0x48\n[ 2203.789807] dev_attr_show from sysfs_kf_seq_show+0x90/0x120\n[ 2203.794181] sysfs_kf_seq_show from seq_read_iter+0xd0/0x4e4\n[ 2203.798555] seq_read_iter from vfs_read+0x238/0x2a0\n[ 2203.802236] vfs_read from ksys_read+0xa4/0xd4\n[ 2203.805385] ksys_read from ret_fast_syscall+0x0/0x54\n[ 2203.809135] Exception stack(0xe0badfa8 to 0xe0badff0)\n[ 2203.812880] dfa0: 00000003 b6f10f80 00000003 b6eab000 00020000 00000000\n[ 2203.819746] dfc0: 00000003 b6f10f80 7ff00000 00000003 00000003 00000000 00020000 00000000\n[ 2203.826619] dfe0: b6e1bc88 bed80958 b6e1bc94 b6e1bcb0\n[ 2203.830363] Code: bad PC value\n[ 2203.832695] ---[ end trace 0000000000000000 ]---"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: driver: iio: agregar comprobaciones faltantes en el acceso a la devoluci\u00f3n de llamada de iio_info Se accede a algunas devoluciones de llamadas de la estructura iio_info sin ninguna comprobaci\u00f3n, por lo que si un controlador no las implementa, intentar acceder a las entradas sysfs correspondientes produce un error de kernel como: [ 2203.527791] No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 00000000 cuando se ejecuta [...] [ 2203.783416] Rastreo de llamadas: [ 2203.783429] iio_read_channel_info_avail de dev_attr_show+0x18/0x48 [ 2203.789807] dev_attr_show de sysfs_kf_seq_show+0x90/0x120 [ 2203.794181] sysfs_kf_seq_show de seq_read_iter+0xd0/0x4e4 [ 2203.798555] seq_read_iter de vfs_read+0x238/0x2a0 [ 2203.802236] vfs_read de ksys_read+0xa4/0xd4 [ 2203.805385] ksys_read de ret_fast_syscall+0x0/0x54 [ 2203.809135] Pila de excepciones (0xe0badfa8 a 0xe0badff0) [ 2203.812880] dfa0: 00000003 b6f10f80 00000003 b6eab000 00020000 00000000 [ 2203.819746] dfc0: 00000003 b6f10f80 7ff00000 00000003 00000003 00000000 00020000 00000000 [ 2203.826619] dfe0: b6e1bc88 bed80958 b6e1bc94 b6e1bcb0 [ 2203.830363] C\u00f3digo: valor de PC incorrecto [ 2203.832695] ---[ fin del seguimiento 000000000000000 ]---"}], "lastModified": "2025-11-03T23:15:55.503", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EFD3BACD-EA1D-4437-A135-A3E7A761F54F", "versionEndExcluding": "6.1.109"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A56A0460-B122-44D6-B0E6-26CE9C891536", "versionEndExcluding": "6.6.50", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4469C96-A86B-4CC3-B2D5-C21B6B72641B", "versionEndExcluding": "6.10.9", "versionStartIncluding": "6.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}