{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2024-49933",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-10-21T12:17:06.040Z",
        "datePublished": "2024-10-21T18:01:55.087Z",
        "dateUpdated": "2026-05-11T20:42:14.007Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T20:42:14.007Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk_iocost: fix more out of bound shifts\n\nRecently running UBSAN caught few out of bound shifts in the\nioc_forgive_debts() function:\n\nUBSAN: shift-out-of-bounds in block/blk-iocost.c:2142:38\nshift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long\nlong')\n...\nUBSAN: shift-out-of-bounds in block/blk-iocost.c:2144:30\nshift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long\nlong')\n...\nCall Trace:\n<IRQ>\ndump_stack_lvl+0xca/0x130\n__ubsan_handle_shift_out_of_bounds+0x22c/0x280\n? __lock_acquire+0x6441/0x7c10\nioc_timer_fn+0x6cec/0x7750\n? blk_iocost_init+0x720/0x720\n? call_timer_fn+0x5d/0x470\ncall_timer_fn+0xfa/0x470\n? blk_iocost_init+0x720/0x720\n__run_timer_base+0x519/0x700\n...\n\nActual impact of this issue was not identified but I propose to fix the\nundefined behaviour.\nThe proposed fix to prevent those out of bound shifts consist of\nprecalculating exponent before using it the shift operations by taking\nmin value from the actual exponent and maximum possible number of bits."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "block/blk-iocost.c"
                    ],
                    "versions": [
                        {
                            "version": "bec02dbbafad534674309f8b948094900f456797",
                            "lessThan": "1f61d509257d6a05763d05bf37943b35306522b1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bec02dbbafad534674309f8b948094900f456797",
                            "lessThan": "f4ef9bef023d5c543cb0f3194ecacfd47ef590ec",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bec02dbbafad534674309f8b948094900f456797",
                            "lessThan": "59121bb38fdc01434ea3fe361ee02b59f036227f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bec02dbbafad534674309f8b948094900f456797",
                            "lessThan": "1ab2cfe19700fb3dde4c7dfec392acff34db3120",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bec02dbbafad534674309f8b948094900f456797",
                            "lessThan": "1b120f151871eb47ce9f283c007af3f8ae1d990e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bec02dbbafad534674309f8b948094900f456797",
                            "lessThan": "364022095bdd4108efdaaa68576afa4712a5d085",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bec02dbbafad534674309f8b948094900f456797",
                            "lessThan": "9bce8005ec0dcb23a58300e8522fe4a31da606fa",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "block/blk-iocost.c"
                    ],
                    "versions": [
                        {
                            "version": "5.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.227",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.168",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.113",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.55",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.10.14",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11.3",
                            "lessThanOrEqual": "6.11.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12",
                            "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": "5.10",
                                    "versionEndExcluding": "5.10.227"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "5.15.168"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.1.113"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.6.55"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.10.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
                                    "versionEndExcluding": "6.11.3"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.10",
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                                }
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1f61d509257d6a05763d05bf37943b35306522b1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f4ef9bef023d5c543cb0f3194ecacfd47ef590ec"
                },
                {
                    "url": "https://git.kernel.org/stable/c/59121bb38fdc01434ea3fe361ee02b59f036227f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1ab2cfe19700fb3dde4c7dfec392acff34db3120"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1b120f151871eb47ce9f283c007af3f8ae1d990e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/364022095bdd4108efdaaa68576afa4712a5d085"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9bce8005ec0dcb23a58300e8522fe4a31da606fa"
                }
            ],
            "title": "blk_iocost: fix more out of bound shifts",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
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                            "type": "ssvc",
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                                "id": "CVE-2024-49933",
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                                "options": [
                                    {
                                        "Exploitation": "none"
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                                    {
                                        "Technical Impact": "partial"
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                                "version": "2.0.3",
                                "timestamp": "2024-10-22T13:38:48.082140Z"
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                    "dateUpdated": "2024-10-22T13:48:42.880Z"
                }
            },
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
                    },
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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}