{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23085",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.961Z",
        "datePublished": "2026-02-04T16:08:09.368Z",
        "dateUpdated": "2026-06-11T18:44:04.404Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:59:42.618Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v3-its: Avoid truncating memory addresses\n\nOn 32-bit machines with CONFIG_ARM_LPAE, it is possible for lowmem\nallocations to be backed by addresses physical memory above the 32-bit\naddress limit, as found while experimenting with larger VMSPLIT\nconfigurations.\n\nThis caused the qemu virt model to crash in the GICv3 driver, which\nallocates the 'itt' object using GFP_KERNEL. Since all memory below\nthe 4GB physical address limit is in ZONE_DMA in this configuration,\nkmalloc() defaults to higher addresses for ZONE_NORMAL, and the\nITS driver stores the physical address in a 32-bit 'unsigned long'\nvariable.\n\nChange the itt_addr variable to the correct phys_addr_t type instead,\nalong with all other variables in this driver that hold a physical\naddress.\n\nThe gicv5 driver correctly uses u64 variables, while all other irqchip\ndrivers don't call virt_to_phys or similar interfaces. It's expected that\nother device drivers have similar issues, but fixing this one is\nsufficient for booting a virtio based guest."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/irqchip/irq-gic-v3-its.c"
                    ],
                    "versions": [
                        {
                            "version": "cc2d3216f53c9fff0030eb71cacc4ce5f39d1d7e",
                            "lessThan": "e332b3b69e5b3acf07204a4b185071bab15c2b88",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc2d3216f53c9fff0030eb71cacc4ce5f39d1d7e",
                            "lessThan": "e2f9c751f73a2d5bb62d94ab030aec118a811f27",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc2d3216f53c9fff0030eb71cacc4ce5f39d1d7e",
                            "lessThan": "85215d633983233809f7d4dad163b953331b8238",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc2d3216f53c9fff0030eb71cacc4ce5f39d1d7e",
                            "lessThan": "1b323391560354d8c515de8658b057a1daa82adb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc2d3216f53c9fff0030eb71cacc4ce5f39d1d7e",
                            "lessThan": "084ba3b99f2dfd991ce7e84fb17117319ec3cd9f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc2d3216f53c9fff0030eb71cacc4ce5f39d1d7e",
                            "lessThan": "03faa61eb4b9ca9aa09bd91d4c3773d8e7b1ac98",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cc2d3216f53c9fff0030eb71cacc4ce5f39d1d7e",
                            "lessThan": "8d76a7d89c12d08382b66e2f21f20d0627d14859",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/irqchip/irq-gic-v3-its.c"
                    ],
                    "versions": [
                        {
                            "version": "3.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.249",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.199",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.162",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.122",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.68",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.8",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "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": "3.19",
                                    "versionEndExcluding": "5.10.249"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "5.15.199"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.1.162"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.6.122"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.12.68"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.18.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.19",
                                    "versionEndExcluding": "6.19"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e332b3b69e5b3acf07204a4b185071bab15c2b88"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e2f9c751f73a2d5bb62d94ab030aec118a811f27"
                },
                {
                    "url": "https://git.kernel.org/stable/c/85215d633983233809f7d4dad163b953331b8238"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1b323391560354d8c515de8658b057a1daa82adb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/084ba3b99f2dfd991ce7e84fb17117319ec3cd9f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/03faa61eb4b9ca9aa09bd91d4c3773d8e7b1ac98"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8d76a7d89c12d08382b66e2f21f20d0627d14859"
                }
            ],
            "title": "irqchip/gic-v3-its: Avoid truncating memory addresses",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2026-23085",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2026-06-10T20:40:42.445145Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-06-11T18:44:04.404Z"
                }
            }
        ]
    }
}