{ "id": "CVE-2024-26709", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2024-04-03T15:15:53.440", "lastModified": "2025-01-13T20:03:28.797", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/iommu: Fix the missing iommu_group_put() during platform domain attach\n\nThe function spapr_tce_platform_iommu_attach_dev() is missing to call\niommu_group_put() when the domain is already set. This refcount leak\nshows up with BUG_ON() during DLPAR remove operation as:\n\n KernelBug: Kernel bug in state 'None': kernel BUG at arch/powerpc/platforms/pseries/iommu.c:100!\n Oops: Exception in kernel mode, sig: 5 [#1]\n LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries\n \n Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries\n NIP: c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000\n REGS: c0000013aed5f840 TRAP: 0700 Tainted: G I (6.8.0-rc3-autotest-g99bd3cb0d12e)\n MSR: 8000000000029033 CR: 44002402 XER: 20040000\n CFAR: c000000000a0d170 IRQMASK: 0\n ...\n NIP iommu_reconfig_notifier+0x94/0x200\n LR iommu_reconfig_notifier+0x8c/0x200\n Call Trace:\n iommu_reconfig_notifier+0x8c/0x200 (unreliable)\n notifier_call_chain+0xb8/0x19c\n blocking_notifier_call_chain+0x64/0x98\n of_reconfig_notify+0x44/0xdc\n of_detach_node+0x78/0xb0\n ofdt_write.part.0+0x86c/0xbb8\n proc_reg_write+0xf4/0x150\n vfs_write+0xf8/0x488\n ksys_write+0x84/0x140\n system_call_exception+0x138/0x330\n system_call_vectored_common+0x15c/0x2ec\n\nThe patch adds the missing iommu_group_put() call." }, { "lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/iommu: corrige el iommu_group_put() que falta durante la conexi\u00f3n del dominio de la plataforma. Falta la funci\u00f3n spapr_tce_platform_iommu_attach_dev() para llamar a iommu_group_put() cuando el dominio ya est\u00e1 configurado. Esta fuga de recuento aparece con BUG_ON() durante la operaci\u00f3n de eliminaci\u00f3n de DLPAR como: KernelBug: Error del kernel en estado 'Ninguno': ERROR del kernel en arch/powerpc/platforms/pseries/iommu.c:100. Vaya: Excepci\u00f3n en modo kernel, sign: 5 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries Nombre de hardware: IBM,9080-HEX POWER10 (sin formato) 0x800200 0xf000006 of:IBM,FW1060. 00 (NH1060_016) hv:phyp pSeries NIP: c0000000000ff4d4 LR: c0000000000ff4cc CTR: 0000000000000000 REGS: c0000013aed5f840 TRAP: 0700 Contaminado: GI (6.8.0-rc3-autotest-g9 9bd3cb0d12e) MSR: 8000000000029033 CR: 44002402 XER: 20040000 CFAR: c000000000a0d170 IRQMASK: 0 ... NIP iommu_reconfig_notifier+0x94/0x200 LR iommu_reconfig_notifier+0x8c/0x200 Seguimiento de llamadas: iommu_reconfig_notifier+0x8c/0x2 00 (no confiable) notifier_call_chain+0xb8/0x19c blocking_notifier_call_chain+ 0x64/0x98 of_reconfig_notify+0x44/0xdc of_detach_node+0x78/0xb0 ofdt_write.part.0+0x86c/0xbb8 proc_reg_write+0xf4/0x150 vfs_write+0xf8/0x488 ksys_write+0x84/0x140 system_call_exception+0x1 38/0x330 system_call_vectored_common+0x15c/0x2ec El parche agrega la llamada faltante a iommu_group_put()." } ], "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": "NVD-CWE-Other" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.7.6", "matchCriteriaId": "C6D6A5C8-7308-42A9-8A72-ABF3DEA4BB82" }, { "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" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/0846dd77c8349ec92ca0079c9c71d130f34cb192", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch" ] }, { "url": "https://git.kernel.org/stable/c/c90fdea9cac9eb419fc266e75d625cb60c8f7f6c", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch" ] } ] }