{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-36916",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-iocost: avoid out of bounds shift\n\nUBSAN catches undefined behavior in blk-iocost, where sometimes\niocg->delay is shifted right by a number that is too large,\nresulting in undefined behavior on some architectures.\n\n[  186.556576] ------------[ cut here ]------------\nUBSAN: shift-out-of-bounds in block/blk-iocost.c:1366:23\nshift exponent 64 is too large for 64-bit type 'u64' (aka 'unsigned long long')\nCPU: 16 PID: 0 Comm: swapper/16 Tainted: G S          E    N 6.9.0-0_fbk700_debug_rc2_kbuilder_0_gc85af715cac0 #1\nHardware name: Quanta Twin Lakes MP/Twin Lakes Passive MP, BIOS F09_3A23 12/08/2020\nCall Trace:\n <IRQ>\n dump_stack_lvl+0x8f/0xe0\n __ubsan_handle_shift_out_of_bounds+0x22c/0x280\n iocg_kick_delay+0x30b/0x310\n ioc_timer_fn+0x2fb/0x1f80\n __run_timer_base+0x1b6/0x250\n...\n\nAvoid that undefined behavior by simply taking the\n\"delay = 0\" branch if the shift is too large.\n\nI am not sure what the symptoms of an undefined value\ndelay will be, but I suspect it could be more than a\nlittle annoying to debug."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "7caa47151ab2",
                                            "version_value": "62accf6c1d7b"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.4",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.4",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.10.217",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.15.159",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.1.91",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6.31",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.8.10",
                                                        "lessThanOrEqual": "6.8.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
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                                                    {
                                                        "version": "6.9",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
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                                                "defaultStatus": "affected"
                                            }
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            ]
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5"
            },
            {
                "url": "https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1",
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                "name": "https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1"
            },
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                "url": "https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca",
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                "name": "https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca"
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                "url": "https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86",
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                "name": "https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86"
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                "url": "https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b",
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                "name": "https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b"
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                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d"
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