CVE-2024-26738
Vulnerability from cvelistv5
Published
2024-04-03 17:00
Modified
2024-11-05 09:14
Severity ?
Summary
powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

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                "id": "CVE-2024-26738",
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                    "Automatable": "no"
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-04-03T18:32:38.410311Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/include/asm/ppc-pci.h",
            "arch/powerpc/kernel/iommu.c",
            "arch/powerpc/platforms/pseries/pci_dlpar.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "programFiles": [
            "arch/powerpc/include/asm/ppc-pci.h",
            "arch/powerpc/kernel/iommu.c",
            "arch/powerpc/platforms/pseries/pci_dlpar.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "6.4"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries/iommu: DLPAR add doesn\u0027t 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 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  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."
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        "dateUpdated": "2024-11-05T09:14:50.064Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "powerpc/pseries/iommu: DLPAR add doesn\u0027t completely initialize pci_controller",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26738",
    "datePublished": "2024-04-03T17:00:24.126Z",
    "dateReserved": "2024-02-19T14:20:24.166Z",
    "dateUpdated": "2024-11-05T09:14:50.064Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.1",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26738\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-03T17:15:51.303\",\"lastModified\":\"2024-04-03T17:24:18.150\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/pseries/iommu: DLPAR add doesn\u0027t 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 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  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\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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