143 lines
7.8 KiB
JSON
143 lines
7.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-46141",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-05-13T15:03:33.100Z",
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"datePublished": "2026-05-28T09:35:56.940Z",
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"dateUpdated": "2026-06-14T17:57:33.523Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-06-14T17:57:33.523Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/xive: fix kmemleak caused by incorrect chip_data lookup\n\nThe kmemleak reports the following memory leak:\n\nUnreferenced object 0xc0000002a7fbc640 (size 64):\n comm \"kworker/8:1\", pid 540, jiffies 4294937872\n hex dump (first 32 bytes):\n 01 00 00 00 00 00 00 00 00 00 09 04 00 04 00 00 ................\n 00 00 a7 81 00 00 0a c0 00 00 08 04 00 04 00 00 ................\n backtrace (crc 177d48f6):\n __kmalloc_cache_noprof+0x520/0x730\n xive_irq_alloc_data.constprop.0+0x40/0xe0\n xive_irq_domain_alloc+0xd0/0x1b0\n irq_domain_alloc_irqs_parent+0x44/0x6c\n pseries_irq_domain_alloc+0x1cc/0x354\n irq_domain_alloc_irqs_parent+0x44/0x6c\n msi_domain_alloc+0xb0/0x220\n irq_domain_alloc_irqs_locked+0x138/0x4d0\n __irq_domain_alloc_irqs+0x8c/0xfc\n __msi_domain_alloc_irqs+0x214/0x4d8\n msi_domain_alloc_irqs_all_locked+0x70/0xf8\n pci_msi_setup_msi_irqs+0x60/0x78\n __pci_enable_msix_range+0x54c/0x98c\n pci_alloc_irq_vectors_affinity+0x16c/0x1d4\n nvme_pci_enable+0xac/0x9c0 [nvme]\n nvme_probe+0x340/0x764 [nvme]\n\nThis occurs when allocating MSI-X vectors for an NVMe device. During\nallocation the XIVE code creates a struct xive_irq_data and stores it\nin irq_data->chip_data.\n\nWhen the MSI-X irqdomain is later freed, xive_irq_free_data() is\nresponsible for retrieving this structure and freeing it. However,\nafter commit cc0cc23babc9 (\"powerpc/xive: Untangle xive from child\ninterrupt controller drivers\"), xive_irq_free_data() retrieves the\nchip_data using irq_get_chip_data(), which looks up the data through\nthe child domain.\n\nThis is incorrect because the XIVE-specific irq data is associated with\nthe XIVE (parent) domain. As a result the lookup fails and the allocated\nstruct xive_irq_data is never freed, leading to the kmemleak report\nshown above.\n\nFix this by retrieving the irq_data from the correct domain using\nirq_domain_get_irq_data() and then accessing the chip_data via\nirq_data_get_irq_chip_data()."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/powerpc/sysdev/xive/common.c"
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],
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"versions": [
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{
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"version": "cc0cc23babc979e399f34f53e4bccf702a389558",
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"lessThan": "2546fb8c9acc8c7512ed4339ce2a982cb7407065",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cc0cc23babc979e399f34f53e4bccf702a389558",
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"lessThan": "e66ed135cdf23a318e9727dca48f98f7f6142f78",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cc0cc23babc979e399f34f53e4bccf702a389558",
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"lessThan": "6771c54728c278bf1e4bfdab4fddbbb186e33498",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/powerpc/sysdev/xive/common.c"
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],
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"versions": [
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{
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"version": "6.18",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.18",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.30",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.0.7",
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"lessThanOrEqual": "7.0.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18",
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"versionEndExcluding": "6.18.30"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18",
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"versionEndExcluding": "7.0.7"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18",
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"versionEndExcluding": "7.1"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/2546fb8c9acc8c7512ed4339ce2a982cb7407065"
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},
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{
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"url": "https://git.kernel.org/stable/c/e66ed135cdf23a318e9727dca48f98f7f6142f78"
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},
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{
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"url": "https://git.kernel.org/stable/c/6771c54728c278bf1e4bfdab4fddbbb186e33498"
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}
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],
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"title": "powerpc/xive: fix kmemleak caused by incorrect chip_data lookup",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |