CVE-2024-46824

{"id": "CVE-2024-46824", "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": "2024-09-27T13:15:14.960", "references": [{"url": "https://git.kernel.org/stable/c/89827a4de802765b1ebb401fc1e73a90108c7520", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a11dda723c6493bb1853bbc61c093377f96e2d47", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "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\niommufd: Require drivers to supply the cache_invalidate_user ops\n\nIf drivers don't do this then iommufd will oops invalidation ioctls with\nsomething like:\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n Mem abort info:\n ESR = 0x0000000086000004\n EC = 0x21: IABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x04: level 0 translation fault\n user pgtable: 4k pages, 48-bit VAs, pgdp=0000000101059000\n [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n Internal error: Oops: 0000000086000004 [#1] PREEMPT SMP\n Modules linked in:\n CPU: 2 PID: 371 Comm: qemu-system-aar Not tainted 6.8.0-rc7-gde77230ac23a #9\n Hardware name: linux,dummy-virt (DT)\n pstate: 81400809 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=-c)\n pc : 0x0\n lr : iommufd_hwpt_invalidate+0xa4/0x204\n sp : ffff800080f3bcc0\n x29: ffff800080f3bcf0 x28: ffff0000c369b300 x27: 0000000000000000\n x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000\n x23: 0000000000000000 x22: 00000000c1e334a0 x21: ffff0000c1e334a0\n x20: ffff800080f3bd38 x19: ffff800080f3bd58 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffff8240d6d8\n x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000\n x8 : 0000001000000002 x7 : 0000fffeac1ec950 x6 : 0000000000000000\n x5 : ffff800080f3bd78 x4 : 0000000000000003 x3 : 0000000000000002\n x2 : 0000000000000000 x1 : ffff800080f3bcc8 x0 : ffff0000c6034d80\n Call trace:\n 0x0\n iommufd_fops_ioctl+0x154/0x274\n __arm64_sys_ioctl+0xac/0xf0\n invoke_syscall+0x48/0x110\n el0_svc_common.constprop.0+0x40/0xe0\n do_el0_svc+0x1c/0x28\n el0_svc+0x34/0xb4\n el0t_64_sync_handler+0x120/0x12c\n el0t_64_sync+0x190/0x194\n\nAll existing drivers implement this op for nesting, this is mostly a\nbisection aid."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommufd: Requiere que los controladores proporcionen las operaciones cache_invalidate_user Si los controladores no hacen esto, iommufd oops invalidar\u00e1 los ioctls con algo como: No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000000 Informaci\u00f3n de aborto de memoria: ESR = 0x0000000086000004 EC = 0x21: IABT (EL actual), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: error de traducci\u00f3n de nivel 0 pgtable de usuario: 4k p\u00e1ginas, VA de 48 bits, pgdp=0000000101059000 [000000000000000] pgd=0000000000000000, p4d=0000000000000000 Error interno: Oops: 0000000086000004 [#1] PREEMPT M\u00f3dulos SMP vinculados: CPU: 2 PID: 371 Comm: qemu-system-aar No contaminado 6.8.0-rc7-gde77230ac23a #9 Nombre del hardware: linux,dummy-virt (DT) pstate: 81400809 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=-c) pc : 0x0 lr : iommufd_hwpt_invalidate+0xa4/0x204 sp : ffff800080f3bcc0 x29: ffff800080f3bcf0 x28: ffff0000c369b300 x27: 0000000000000000 x26: 0000000000000000 x25: 00000000000000000 x24: 0000000000000000 x23: 000000000000000 x22: 00000000c1e334a0 x21: ffff0000c1e334a0 x20: ffff800080f3bd38 x19: ffff800080f3bd58 x18: 0000000000000000 x17: 00000000000000000 x16: 0000000000000000 x15: 0000ffff8240d6d8 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 000000000000000 x9: 000000000000000 x8: 0000001000000002 x7: 0000fffeac1ec950 x6: 0000000000000000 x5: ffff800080f3bd78 x4: 0000000000000003 x3: 0000000000000002 x2: 0000000000000000 x1: ffff800080f3bcc8 x0: ffff0000c6034d80 Rastreo de llamadas: 0x0 iommufd_fops_ioctl+0x154/0x274 __arm64_sys_ioctl+0xac/0xf0 anybody_syscall+0x48/0x110 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x34/0xb4 el0t_64_sync_handler+0x120/0x12c el0t_64_sync+0x190/0x194 Todos los controladores existentes implementan esta operaci\u00f3n para anidamiento, esto es principalmente una ayuda de bisecci\u00f3n."}], "lastModified": "2024-10-02T14:29:08.417", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4FAFFECB-D55B-4130-801C-AE52B8A6B1BA", "versionEndExcluding": "6.10.10", "versionStartIncluding": "6.8"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}