{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-54232",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-30T12:06:44.502Z",
        "datePublished": "2025-12-30T12:11:23.565Z",
        "dateUpdated": "2026-05-11T19:58:00.368Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:58:00.368Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nm68k: Only force 030 bus error if PC not in exception table\n\n__get_kernel_nofault() does copy data in supervisor mode when\nforcing a task backtrace log through /proc/sysrq_trigger.\nThis is expected cause a bus error exception on e.g. NULL\npointer dereferencing when logging a kernel task has no\nworkqueue associated. This bus error ought to be ignored.\n\nOur 030 bus error handler is ill equipped to deal with this:\n\nWhenever ssw indicates a kernel mode access on a data fault,\nwe don't even attempt to handle the fault and instead always\nsend a SEGV signal (or panic). As a result, the check\nfor exception handling at the fault PC (buried in\nsend_sig_fault() which gets called from do_page_fault()\neventually) is never used.\n\nIn contrast, both 040 and 060 access error handlers do not\ncare whether a fault happened on supervisor mode access,\nand will call do_page_fault() on those, ultimately honoring\nthe exception table.\n\nAdd a check in bus_error030 to call do_page_fault() in case\nwe do have an entry for the fault PC in our exception table.\n\nI had attempted a fix for this earlier in 2019 that did rely\non testing pagefault_disabled() (see link below) to achieve\nthe same thing, but this patch should be more generic.\n\nTested on 030 Atari Falcon."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/m68k/kernel/traps.c"
                    ],
                    "versions": [
                        {
                            "version": "f2325ecebc5b7988fd49968bd3a660fd1594dc84",
                            "lessThan": "1a6059f5ed57f48edfe7159404ff7d538d9d405b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f2325ecebc5b7988fd49968bd3a660fd1594dc84",
                            "lessThan": "f55cb52ec98b22125f5bda36391edb8894f7e8cf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f2325ecebc5b7988fd49968bd3a660fd1594dc84",
                            "lessThan": "2100e374251a8fc00cce1916cfc50f3cb652cbe3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f2325ecebc5b7988fd49968bd3a660fd1594dc84",
                            "lessThan": "df1da53a7e98f0b2a0eb2241c154f148f2f2c1d8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f2325ecebc5b7988fd49968bd3a660fd1594dc84",
                            "lessThan": "8bf8d5dade4c5e1d8a2386f29253ed28b5d87735",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f2325ecebc5b7988fd49968bd3a660fd1594dc84",
                            "lessThan": "54fa25ffab2b700df5abd58c136d64a912c53953",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f2325ecebc5b7988fd49968bd3a660fd1594dc84",
                            "lessThan": "ec15405b80fc15ffc87a23d01378ae061c1aba07",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f2325ecebc5b7988fd49968bd3a660fd1594dc84",
                            "lessThan": "e36a82bebbf7da814530d5a179bef9df5934b717",
                            "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/m68k/kernel/traps.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.312",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.280",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.240",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.177",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.105",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.22",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2.9",
                            "lessThanOrEqual": "6.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.18",
                                    "versionEndExcluding": "4.14.312"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.18",
                                    "versionEndExcluding": "4.19.280"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.18",
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                                    "versionStartIncluding": "2.6.18",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionStartIncluding": "2.6.18",
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                                    "versionEndExcluding": "6.2.9"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.18",
                                    "versionEndExcluding": "6.3"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1a6059f5ed57f48edfe7159404ff7d538d9d405b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f55cb52ec98b22125f5bda36391edb8894f7e8cf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2100e374251a8fc00cce1916cfc50f3cb652cbe3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/df1da53a7e98f0b2a0eb2241c154f148f2f2c1d8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8bf8d5dade4c5e1d8a2386f29253ed28b5d87735"
                },
                {
                    "url": "https://git.kernel.org/stable/c/54fa25ffab2b700df5abd58c136d64a912c53953"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ec15405b80fc15ffc87a23d01378ae061c1aba07"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e36a82bebbf7da814530d5a179bef9df5934b717"
                }
            ],
            "title": "m68k: Only force 030 bus error if PC not in exception table",
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}