{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23346",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.999Z",
        "datePublished": "2026-03-25T10:27:33.133Z",
        "dateUpdated": "2026-06-19T11:57:35.219Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-19T11:57:35.219Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: io: Extract user memory type in ioremap_prot()\n\nThe only caller of ioremap_prot() outside of the generic ioremap()\nimplementation is generic_access_phys(), which passes a 'pgprot_t' value\ndetermined from the user mapping of the target 'pfn' being accessed by\nthe kernel. On arm64, the 'pgprot_t' contains all of the non-address\nbits from the pte, including the permission controls, and so we end up\nreturning a new user mapping from ioremap_prot() which faults when\naccessed from the kernel on systems with PAN:\n\n  | Unable to handle kernel read from unreadable memory at virtual address ffff80008ea89000\n  | ...\n  | Call trace:\n  |   __memcpy_fromio+0x80/0xf8\n  |   generic_access_phys+0x20c/0x2b8\n  |   __access_remote_vm+0x46c/0x5b8\n  |   access_remote_vm+0x18/0x30\n  |   environ_read+0x238/0x3e8\n  |   vfs_read+0xe4/0x2b0\n  |   ksys_read+0xcc/0x178\n  |   __arm64_sys_read+0x4c/0x68\n\nExtract only the memory type from the user 'pgprot_t' in ioremap_prot()\nand assert that we're being passed a user mapping, to protect us against\nany changes in future that may require additional handling. To avoid\nfalsely flagging users of ioremap(), provide our own ioremap() macro\nwhich simply wraps __ioremap_prot()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/arm64/include/asm/io.h"
                    ],
                    "versions": [
                        {
                            "version": "893dea9ccd08dab924839354aba21d4ed7a9abc0",
                            "lessThan": "64858b76ec67c5fc40fef8ec1841fecb78c1ebde",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "893dea9ccd08dab924839354aba21d4ed7a9abc0",
                            "lessThan": "eeecafce5afffb4da703666ebefbd4d6e2a5abf6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "893dea9ccd08dab924839354aba21d4ed7a9abc0",
                            "lessThan": "3d64dcc0799c2d6921ba027716b7be721eb19fa8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "893dea9ccd08dab924839354aba21d4ed7a9abc0",
                            "lessThan": "d1ad8fe7f72d73e1617bac79f2ec7a3bedf47e2a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "893dea9ccd08dab924839354aba21d4ed7a9abc0",
                            "lessThan": "8f098037139b294050053123ab2bc0f819d08932",
                            "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/arm64/include/asm/io.h"
                    ],
                    "versions": [
                        {
                            "version": "6.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.143",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.93",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.17",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.7",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.0",
                                    "versionEndExcluding": "6.6.143"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.12.93"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.18.17"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.19.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/64858b76ec67c5fc40fef8ec1841fecb78c1ebde"
                },
                {
                    "url": "https://git.kernel.org/stable/c/eeecafce5afffb4da703666ebefbd4d6e2a5abf6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3d64dcc0799c2d6921ba027716b7be721eb19fa8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d1ad8fe7f72d73e1617bac79f2ec7a3bedf47e2a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8f098037139b294050053123ab2bc0f819d08932"
                }
            ],
            "title": "arm64: io: Extract user memory type in ioremap_prot()",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}