{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2024-26738", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.166Z", "datePublished": "2024-04-03T17:00:24.126Z", "dateUpdated": "2024-08-02T00:14:13.091Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:21:49.672Z" }, "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 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." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/powerpc/include/asm/ppc-pci.h", "arch/powerpc/kernel/iommu.c", "arch/powerpc/platforms/pseries/pci_dlpar.c" ], "versions": [ { "version": "a940904443e4", "lessThan": "b8315b2e25b4", "status": "affected", "versionType": "git" }, { "version": "a940904443e4", "lessThan": "46e36ebd5e00", "status": "affected", "versionType": "git" }, { "version": "a940904443e4", "lessThan": "a5c57fd2e9bd", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/powerpc/include/asm/ppc-pci.h", "arch/powerpc/kernel/iommu.c", "arch/powerpc/platforms/pseries/pci_dlpar.c" ], "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "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" } ], "title": "powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "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": "2024-06-04T17:49:33.182Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:13.091Z" }, "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" ] } ] } ] } }