{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-48762",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-06-20T11:09:39.060Z",
        "datePublished": "2024-06-20T11:13:39.855Z",
        "dateUpdated": "2026-05-11T18:46:26.605Z"
    },
    "containers": {
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                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T18:46:26.605Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: extable: fix load_unaligned_zeropad() reg indices\n\nIn ex_handler_load_unaligned_zeropad() we erroneously extract the data and\naddr register indices from ex->type rather than ex->data. As ex->type will\ncontain EX_TYPE_LOAD_UNALIGNED_ZEROPAD (i.e. 4):\n * We'll always treat X0 as the address register, since EX_DATA_REG_ADDR is\n   extracted from bits [9:5]. Thus, we may attempt to dereference an\n   arbitrary address as X0 may hold an arbitrary value.\n * We'll always treat X4 as the data register, since EX_DATA_REG_DATA is\n   extracted from bits [4:0]. Thus we will corrupt X4 and cause arbitrary\n   behaviour within load_unaligned_zeropad() and its caller.\n\nFix this by extracting both values from ex->data as originally intended.\n\nOn an MTE-enabled QEMU image we are hitting the following crash:\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n Call trace:\n  fixup_exception+0xc4/0x108\n  __do_kernel_fault+0x3c/0x268\n  do_tag_check_fault+0x3c/0x104\n  do_mem_abort+0x44/0xf4\n  el1_abort+0x40/0x64\n  el1h_64_sync_handler+0x60/0xa0\n  el1h_64_sync+0x7c/0x80\n  link_path_walk+0x150/0x344\n  path_openat+0xa0/0x7dc\n  do_filp_open+0xb8/0x168\n  do_sys_openat2+0x88/0x17c\n  __arm64_sys_openat+0x74/0xa0\n  invoke_syscall+0x48/0x148\n  el0_svc_common+0xb8/0xf8\n  do_el0_svc+0x28/0x88\n  el0_svc+0x24/0x84\n  el0t_64_sync_handler+0x88/0xec\n  el0t_64_sync+0x1b4/0x1b8\n Code: f8695a69 71007d1f 540000e0 927df12a (f940014a)"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/arm64/mm/extable.c"
                    ],
                    "versions": [
                        {
                            "version": "753b32368705c396000f95f33c3b7018474e33ad",
                            "lessThan": "47fe7a1c5e3e011eeb4ab79f2d54a794fdd1c3eb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "753b32368705c396000f95f33c3b7018474e33ad",
                            "lessThan": "3758a6c74e08bdc15ccccd6872a6ad37d165239a",
                            "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/mm/extable.c"
                    ],
                    "versions": [
                        {
                            "version": "5.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.16.5",
                            "lessThanOrEqual": "5.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17",
                            "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": "5.16",
                                    "versionEndExcluding": "5.16.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/47fe7a1c5e3e011eeb4ab79f2d54a794fdd1c3eb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3758a6c74e08bdc15ccccd6872a6ad37d165239a"
                }
            ],
            "title": "arm64: extable: fix load_unaligned_zeropad() reg indices",
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                "engine": "bippy-1.2.0"
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        },
        "adp": [
            {
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                                "type": "CWE",
                                "lang": "en",
                                "description": "CWE-noinfo Not enough information"
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                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 6.2,
                            "attackVector": "LOCAL",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "NONE"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-06-20T13:32:18.518076Z",
                                "id": "CVE-2022-48762",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
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                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
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                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-10-29T18:16:31.076Z"
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                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T15:25:01.535Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/47fe7a1c5e3e011eeb4ab79f2d54a794fdd1c3eb",
                        "tags": [
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                    {
                        "url": "https://git.kernel.org/stable/c/3758a6c74e08bdc15ccccd6872a6ad37d165239a",
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