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        "ID": "CVE-2024-42161",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
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    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Avoid uninitialized value in BPF_CORE_READ_BITFIELD\n\n[Changes from V1:\n - Use a default branch in the switch statement to initialize `val'.]\n\nGCC warns that `val' may be used uninitialized in the\nBPF_CRE_READ_BITFIELD macro, defined in bpf_core_read.h as:\n\n\t[...]\n\tunsigned long long val;\t\t\t\t\t\t      \\\n\t[...]\t\t\t\t\t\t\t\t      \\\n\tswitch (__CORE_RELO(s, field, BYTE_SIZE)) {\t\t\t      \\\n\tcase 1: val = *(const unsigned char *)p; break;\t\t\t      \\\n\tcase 2: val = *(const unsigned short *)p; break;\t\t      \\\n\tcase 4: val = *(const unsigned int *)p; break;\t\t\t      \\\n\tcase 8: val = *(const unsigned long long *)p; break;\t\t      \\\n        }       \t\t\t\t\t\t\t      \\\n\t[...]\n\tval;\t\t\t\t\t\t\t\t      \\\n\t}\t\t\t\t\t\t\t\t      \\\n\nThis patch adds a default entry in the switch statement that sets\n`val' to zero in order to avoid the warning, and random values to be\nused in case __builtin_preserve_field_info returns unexpected values\nfor BPF_FIELD_BYTE_SIZE.\n\nTested in bpf-next master.\nNo regressions."
            }
        ]
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    "problemtype": {
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                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
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    "affects": {
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            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
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                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
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                                            "version_affected": "<",
                                            "version_name": "1da177e4c3f4",
                                            "version_value": "b694989bb13e"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.10.222",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
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                                                        "version": "5.15.163",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
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                                                        "version": "6.1.98",
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                                                        "lessThanOrEqual": "6.6.*",
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                                                        "version": "6.9.9",
                                                        "lessThanOrEqual": "6.9.*",
                                                        "status": "unaffected",
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                                                    {
                                                        "version": "6.10",
                                                        "lessThanOrEqual": "*",
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                "refsource": "MISC",
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