CVE-2026-46141

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46141", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.100Z", "datePublished": "2026-05-28T09:35:56.940Z", "dateUpdated": "2026-06-14T17:57:33.523Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-14T17:57:33.523Z"}, "descriptions": [{"lang": "en", "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()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/powerpc/sysdev/xive/common.c"], "versions": [{"version": "cc0cc23babc979e399f34f53e4bccf702a389558", "lessThan": "2546fb8c9acc8c7512ed4339ce2a982cb7407065", "status": "affected", "versionType": "git"}, {"version": "cc0cc23babc979e399f34f53e4bccf702a389558", "lessThan": "e66ed135cdf23a318e9727dca48f98f7f6142f78", "status": "affected", "versionType": "git"}, {"version": "cc0cc23babc979e399f34f53e4bccf702a389558", "lessThan": "6771c54728c278bf1e4bfdab4fddbbb186e33498", "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/sysdev/xive/common.c"], "versions": [{"version": "6.18", "status": "affected"}, {"version": "0", "lessThan": "6.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.30", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.7", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "6.18.30"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.0.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2546fb8c9acc8c7512ed4339ce2a982cb7407065"}, {"url": "https://git.kernel.org/stable/c/e66ed135cdf23a318e9727dca48f98f7f6142f78"}, {"url": "https://git.kernel.org/stable/c/6771c54728c278bf1e4bfdab4fddbbb186e33498"}], "title": "powerpc/xive: fix kmemleak caused by incorrect chip_data lookup", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/powerpc/sysdev/xive/common.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2546fb8c9acc8c7512ed4339ce2a982cb7407065", "status": "affected", "version": "cc0cc23babc979e399f34f53e4bccf702a389558", "versionType": "git"}, {"lessThan": "e66ed135cdf23a318e9727dca48f98f7f6142f78", "status": "affected", "version": "cc0cc23babc979e399f34f53e4bccf702a389558", "versionType": "git"}, {"lessThan": "6771c54728c278bf1e4bfdab4fddbbb186e33498", "status": "affected", "version": "cc0cc23babc979e399f34f53e4bccf702a389558", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/powerpc/sysdev/xive/common.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"lessThan": "6.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.30", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9EB9FADE-E22F-41C2-9790-4F5564D59E62", "versionEndExcluding": "6.18.30", "versionStartIncluding": "6.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E", "versionEndExcluding": "7.0.7", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "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()."}], "id": "CVE-2026-46141", "lastModified": "2026-06-24T17:08:28.837", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-05-28T10:16:29.680", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2546fb8c9acc8c7512ed4339ce2a982cb7407065"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6771c54728c278bf1e4bfdab4fddbbb186e33498"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e66ed135cdf23a318e9727dca48f98f7f6142f78"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: powerpc/xive: fix kmemleak caused by incorrect chip_data lookup", "id": "2482625", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482625"}, "csaw": false, "cwe": "CWE-763", "details": ["A flaw was found in the Linux kernel's powerpc/xive interrupt controller. This vulnerability, identified as a kernel memory leak (kmemleak), occurs when allocating Message Signaled Interrupts eXtended (MSI-X) vectors for NVMe devices. Due to an incorrect lookup of interrupt data, the `xive_irq_data` structure is not properly freed, leading to a gradual consumption of kernel memory. Over time, this memory leak could potentially lead to system instability or a denial of service (DoS)."], "name": "CVE-2026-46141", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46141\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46141\nhttps://lore.kernel.org/linux-cve-announce/2026052820-CVE-2026-46141-075f@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cc0cc23babc979e399f34f53e4bccf702a389558,2546fb8c9acc8c7512ed4339ce2a982cb7407065)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cc0cc23babc979e399f34f53e4bccf702a389558,e66ed135cdf23a318e9727dca48f98f7f6142f78)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cc0cc23babc979e399f34f53e4bccf702a389558,6771c54728c278bf1e4bfdab4fddbbb186e33498)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.30,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.7,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-28T12:30:16.890196+00:00", "updated": "2026-08-13T23:00:06.991946+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}