{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53343",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-06-09T07:44:35.399Z",
        "datePublished": "2026-07-01T13:32:23.979Z",
        "dateUpdated": "2026-07-01T13:32:23.979Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-01T13:32:23.979Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow\n\nCommit 44e9a3bb76e5 (\"ARM: 9430/1: entry: Do a dummy read from\nVMAP shadow\") added a dummy read from the KASAN VMAP stack shadow in\n__switch_to(). The read uses ldr, but the KASAN shadow address is\nbyte-granular and is not guaranteed to be word aligned.\n\nARMv5 faults unaligned word loads. With CONFIG_KASAN_VMALLOC and\nCONFIG_VMAP_STACK enabled, ARM926/VersatilePB crashes in __switch_to()\nwith an alignment exception before reaching init.\n\nUse ldrb for the dummy shadow access. The code only needs to fault in the\nshadow mapping if the stack shadow is missing, so a byte load is sufficient\nand matches the granularity of KASAN shadow memory."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/arm/kernel/entry-armv.S"
                    ],
                    "versions": [
                        {
                            "version": "8fe148d39c127de3fb78dfa6da95a3608dfda454",
                            "lessThan": "c0b8c148a7754826156993ed6442d31536ec86b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ef21187c0672a2b2cbec44f33bab9ec47d5c277c",
                            "lessThan": "c2e3aadc8fef7da068490597fc5582f8f362aeb2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c86d26b4b089ca294b3b7d915a7da61edb77935f",
                            "lessThan": "c74990828d3c486ee44aaa68240eb3abff289d1c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "44e9a3bb76e5f2eecd374c8176b2c5163c8bb2e2",
                            "lessThan": "517720913bd3c17a52cd55a740064f68455ab88e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "44e9a3bb76e5f2eecd374c8176b2c5163c8bb2e2",
                            "lessThan": "2a4dc9a0ac3326e79fb58fdaae724b92127709a9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "44e9a3bb76e5f2eecd374c8176b2c5163c8bb2e2",
                            "lessThan": "77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.1.120",
                            "lessThan": "6.1.176",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.64",
                            "lessThan": "6.6.143",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.4",
                            "lessThan": "6.12.94",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/arm/kernel/entry-armv.S"
                    ],
                    "versions": [
                        {
                            "version": "6.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.176",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.143",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.94",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.36",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.13",
                            "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": "6.1.120",
                                    "versionEndExcluding": "6.1.176"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.64",
                                    "versionEndExcluding": "6.6.143"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12.4",
                                    "versionEndExcluding": "6.12.94"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "6.18.36"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "7.0.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c0b8c148a7754826156993ed6442d31536ec86b4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c2e3aadc8fef7da068490597fc5582f8f362aeb2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c74990828d3c486ee44aaa68240eb3abff289d1c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/517720913bd3c17a52cd55a740064f68455ab88e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2a4dc9a0ac3326e79fb58fdaae724b92127709a9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/77a1f6883dc6e837bb2cb30b9b02e2f94338e2c6"
                }
            ],
            "title": "ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow",
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    }
}