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nvd-json-data-feeds/CVE-2024/CVE-2024-267xx/CVE-2024-26738.json
cad-safe-bot c9bd4169da Auto-Update: 2025-01-07T23:00:22.280308+00:00
2025-01-07 23:03:44 +00:00

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{
"id": "CVE-2024-26738",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-04-03T17:15:51.303",
"lastModified": "2025-01-07T21:13:43.273",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller\n\nWhen a PCI device is dynamically added, the kernel oopses with a NULL\npointer dereference:\n\n BUG: Kernel NULL pointer dereference on read at 0x00000030\n Faulting instruction address: 0xc0000000006bbe5c\n Oops: Kernel access of bad area, sig: 11 [#1]\n LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries\n Modules linked in: rpadlpar_io rpaphp rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache netfs xsk_diag bonding nft_compat nf_tables nfnetlink rfkill binfmt_misc dm_multipath rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_umad ib_iser libiscsi scsi_transport_iscsi ib_ipoib rdma_cm iw_cm ib_cm mlx5_ib ib_uverbs ib_core pseries_rng drm drm_panel_orientation_quirks xfs libcrc32c mlx5_core mlxfw sd_mod t10_pi sg tls ibmvscsi ibmveth scsi_transport_srp vmx_crypto pseries_wdt psample dm_mirror dm_region_hash dm_log dm_mod fuse\n CPU: 17 PID: 2685 Comm: drmgr Not tainted 6.7.0-203405+ #66\n Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_008) hv:phyp pSeries\n NIP: c0000000006bbe5c LR: c000000000a13e68 CTR: c0000000000579f8\n REGS: c00000009924f240 TRAP: 0300 Not tainted (6.7.0-203405+)\n MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 24002220 XER: 20040006\n CFAR: c000000000a13e64 DAR: 0000000000000030 DSISR: 40000000 IRQMASK: 0\n ...\n NIP sysfs_add_link_to_group+0x34/0x94\n LR iommu_device_link+0x5c/0x118\n Call Trace:\n iommu_init_device+0x26c/0x318 (unreliable)\n iommu_device_link+0x5c/0x118\n iommu_init_device+0xa8/0x318\n iommu_probe_device+0xc0/0x134\n iommu_bus_notifier+0x44/0x104\n notifier_call_chain+0xb8/0x19c\n blocking_notifier_call_chain+0x64/0x98\n bus_notify+0x50/0x7c\n device_add+0x640/0x918\n pci_device_add+0x23c/0x298\n of_create_pci_dev+0x400/0x884\n of_scan_pci_dev+0x124/0x1b0\n __of_scan_bus+0x78/0x18c\n pcibios_scan_phb+0x2a4/0x3b0\n init_phb_dynamic+0xb8/0x110\n dlpar_add_slot+0x170/0x3b8 [rpadlpar_io]\n add_slot_store.part.0+0xb4/0x130 [rpadlpar_io]\n kobj_attr_store+0x2c/0x48\n sysfs_kf_write+0x64/0x78\n kernfs_fop_write_iter+0x1b0/0x290\n vfs_write+0x350/0x4a0\n ksys_write+0x84/0x140\n system_call_exception+0x124/0x330\n system_call_vectored_common+0x15c/0x2ec\n\nCommit a940904443e4 (\"powerpc/iommu: Add iommu_ops to report capabilities\nand allow blocking domains\") broke DLPAR add of PCI devices.\n\nThe above added iommu_device structure to pci_controller. During\nsystem boot, PCI devices are discovered and this newly added iommu_device\nstructure is initialized by a call to iommu_device_register().\n\nDuring DLPAR add of a PCI device, a new pci_controller structure is\nallocated but there are no calls made to iommu_device_register()\ninterface.\n\nFix is to register the iommu device during DLPAR add as well."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/pseries/iommu: la adici\u00f3n de DLPAR no inicializa completamente pci_controller Cuando se agrega din\u00e1micamente un dispositivo PCI, el kernel falla con una desreferencia del puntero NULL: ERROR: desreferencia del puntero NULL del kernel activado le\u00eddo en 0x00000030 Direcci\u00f3n de instrucci\u00f3n err\u00f3nea: 0xc0000000006bbe5c Vaya: acceso al kernel del \u00e1rea defectuosa, firma: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 M\u00f3dulos NUMA pSeries vinculados en: rpadlpar_io rpaphp rpcsec_gss_krb5 auth_r pcgss nfsv4 dns_resolver nfs lockd gracia fscache netfs xsk_diag vinculaci\u00f3n nft_compat nf_tables nfnetlink rfkill binfmt_misc dm_multipath rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_umad ib_iser libiscsi scsi_transport_iscsi ib_ipoib rdma_cm iw_cm ib_cm mlx5 _ib ib_uverbs ib_core pseries_rng drm drm_panel_orientation_quirks xfs libcrc32c mlx5_core mlxfw sd_mod t10_pi sg tls ibmvscsi ibmveth scsi_transport_srp vmx_crypto pseries_wdt psample dm_mirror dm_region_hash dm_log dm_mod CPU fusible : 17 PID: 2685 Comm: drmgr No contaminado 6.7.0-203405+ #66 Nombre de hardware: IBM,9080-HEX POWER10 (sin procesar) 0x800200 0xf000006 de:IBM,FW1060.00 (NH1060_008) hv:phyp pSeries NIP: c0000000006b be5c LR : c000000000a13e68 CTR: c0000000000579f8 REGS: c00000009924f240 TRAP: 0300 No contaminado (6.7.0-203405+) MSR: 8000000000009033 CR: 2400 2220 XER: 20040006 CFAR: c000000000a13e64 DAR: 0000000000000030 DSISR: 40000000 IRQMASK: 0 ... NIP sysfs_add_link_to_group+0x34/0x94 LR iommu_device_link+0x5c/0x118 Seguimiento de llamadas: iommu_init_device+0x26c/0x318 (no confiable) iommu_device_ enlace+0x5c/0x118 iommu_init_device+0xa8/0x318 iommu_probe_device+0xc0/0x134 iommu_bus_notifier+ 0x44/0x104 notifier_call_chain+0xb8/0x19c blocking_notifier_call_chain+0x64/0x98 bus_notify+0x50/0x7c device_add+0x640/0x918 pci_device_add+0x23c/0x298 of_create_pci_dev+0x400/0x884 of_s can_pci_dev+0x124/0x1b0 __of_scan_bus+0x78/0x18c pcibios_scan_phb+0x2a4/0x3b0 init_phb_dynamic+ 0xb8/0x110 dlpar_add_slot+0x170/0x3b8 [rpadlpar_io] add_slot_store.part.0+0xb4/0x130 [rpadlpar_io] kobj_attr_store+0x2c/0x48 sysfs_kf_write+0x64/0x78 kernfs_fop_write_iter+0x1b 0/0x290 vfs_write+0x350/0x4a0 ksys_write+0x84/0x140 system_call_exception+ 0x124/0x330 system_call_vectored_common+0x15c/0x2ec el commit a940904443e4 (\"powerpc/iommu: agregue iommu_ops para informar capacidades y permitir dominios de bloqueo\") rompi\u00f3 la adici\u00f3n DLPAR de dispositivos PCI. Lo anterior agreg\u00f3 la estructura iommu_device a pci_controller. Durante el arranque del SYSTEM, se descubren dispositivos PCI y esta estructura iommu_device reci\u00e9n agregada se inicializa mediante una llamada a iommu_device_register(). Durante la adici\u00f3n DLPAR de un dispositivo PCI, se asigna una nueva estructura pci_controller pero no se realizan llamadas a la interfaz iommu_device_register(). La soluci\u00f3n es registrar tambi\u00e9n el dispositivo iommu durante la adici\u00f3n de DLPAR."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.4",
"versionEndExcluding": "6.6.19",
"matchCriteriaId": "42342D9F-A537-444E-8441-E8C6CAD53884"
},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
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}
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