CVE-2024-26738
Vulnerability from cvelistv5
Published
2024-04-03 17:00
Modified
2024-12-19 08:46
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller When a PCI device is dynamically added, the kernel oopses with a NULL pointer dereference: BUG: Kernel NULL pointer dereference on read at 0x00000030 Faulting instruction address: 0xc0000000006bbe5c Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries 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 CPU: 17 PID: 2685 Comm: drmgr Not tainted 6.7.0-203405+ #66 Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_008) hv:phyp pSeries NIP: c0000000006bbe5c LR: c000000000a13e68 CTR: c0000000000579f8 REGS: c00000009924f240 TRAP: 0300 Not tainted (6.7.0-203405+) MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 24002220 XER: 20040006 CFAR: c000000000a13e64 DAR: 0000000000000030 DSISR: 40000000 IRQMASK: 0 ... NIP sysfs_add_link_to_group+0x34/0x94 LR iommu_device_link+0x5c/0x118 Call Trace: iommu_init_device+0x26c/0x318 (unreliable) iommu_device_link+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_scan_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+0x1b0/0x290 vfs_write+0x350/0x4a0 ksys_write+0x84/0x140 system_call_exception+0x124/0x330 system_call_vectored_common+0x15c/0x2ec Commit a940904443e4 ("powerpc/iommu: Add iommu_ops to report capabilities and allow blocking domains") broke DLPAR add of PCI devices. The above added iommu_device structure to pci_controller. During system boot, PCI devices are discovered and this newly added iommu_device structure is initialized by a call to iommu_device_register(). During DLPAR add of a PCI device, a new pci_controller structure is allocated but there are no calls made to iommu_device_register() interface. Fix is to register the iommu device during DLPAR add as well.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765Patch
Impacted products
Vendor Product Version
Linux Linux Version: a940904443e432623579245babe63e2486ff327b
Version: a940904443e432623579245babe63e2486ff327b
Version: a940904443e432623579245babe63e2486ff327b
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   Linux Linux Version: 6.4
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                "timestamp": "2024-04-03T18:32:38.410311Z",
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          "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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      "title": "powerpc/pseries/iommu: DLPAR add doesn\u0027t completely initialize pci_controller",
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    "cveId": "CVE-2024-26738",
    "datePublished": "2024-04-03T17:00:24.126Z",
    "dateReserved": "2024-02-19T14:20:24.166Z",
    "dateUpdated": "2024-12-19T08:46:12.110Z",
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    "nvd": "{\"cve\":{\"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\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\":{\"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\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.7\",\"matchCriteriaId\":\"575EE16B-67F2-4B5B-B5F8-1877715C898B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B9F4EA73-0894-400F-A490-3A397AB7A517\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"056BD938-0A27-4569-B391-30578B309EE3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F02056A5-B362-4370-9FF8-6F0BD384D520\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"62075ACE-B2A0-4B16-829D-B3DA5AE5CC41\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"A780F817-2A77-4130-A9B7-5C25606314E3\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:14:13.091Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26738\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-04-03T18:32:38.410311Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:21.814Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"powerpc/pseries/iommu: DLPAR add doesn\u0027t completely initialize pci_controller\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"a940904443e432623579245babe63e2486ff327b\", \"lessThan\": \"b8315b2e25b4e68e42fcb74630f824b9a5067765\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a940904443e432623579245babe63e2486ff327b\", \"lessThan\": \"46e36ebd5e00a148b67ed77c1d31675996f77c25\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a940904443e432623579245babe63e2486ff327b\", \"lessThan\": \"a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/powerpc/include/asm/ppc-pci.h\", \"arch/powerpc/kernel/iommu.c\", \"arch/powerpc/platforms/pseries/pci_dlpar.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/powerpc/include/asm/ppc-pci.h\", \"arch/powerpc/kernel/iommu.c\", \"arch/powerpc/platforms/pseries/pci_dlpar.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/b8315b2e25b4e68e42fcb74630f824b9a5067765\"}, {\"url\": \"https://git.kernel.org/stable/c/46e36ebd5e00a148b67ed77c1d31675996f77c25\"}, {\"url\": \"https://git.kernel.org/stable/c/a5c57fd2e9bd1c8ea8613a8f94fd0be5eccbf321\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:46:12.110Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26738\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:46:12.110Z\", \"dateReserved\": \"2024-02-19T14:20:24.166Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-03T17:00:24.126Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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