{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-44981",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nworkqueue: Fix UBSAN 'subtraction overflow' error in shift_and_mask()\n\nUBSAN reports the following 'subtraction overflow' error when booting\nin a virtual machine on Android:\n\n | Internal error: UBSAN: integer subtraction overflow: 00000000f2005515 [#1] PREEMPT SMP\n | Modules linked in:\n | CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-00006-g3cbe9e5abd46-dirty #4\n | Hardware name: linux,dummy-virt (DT)\n | pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n | pc : cancel_delayed_work+0x34/0x44\n | lr : cancel_delayed_work+0x2c/0x44\n | sp : ffff80008002ba60\n | x29: ffff80008002ba60 x28: 0000000000000000 x27: 0000000000000000\n | x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000\n | x23: 0000000000000000 x22: 0000000000000000 x21: ffff1f65014cd3c0\n | x20: ffffc0e84c9d0da0 x19: ffffc0e84cab3558 x18: ffff800080009058\n | x17: 00000000247ee1f8 x16: 00000000247ee1f8 x15: 00000000bdcb279d\n | x14: 0000000000000001 x13: 0000000000000075 x12: 00000a0000000000\n | x11: ffff1f6501499018 x10: 00984901651fffff x9 : ffff5e7cc35af000\n | x8 : 0000000000000001 x7 : 3d4d455453595342 x6 : 000000004e514553\n | x5 : ffff1f6501499265 x4 : ffff1f650ff60b10 x3 : 0000000000000620\n | x2 : ffff80008002ba78 x1 : 0000000000000000 x0 : 0000000000000000\n | Call trace:\n |  cancel_delayed_work+0x34/0x44\n |  deferred_probe_extend_timeout+0x20/0x70\n |  driver_register+0xa8/0x110\n |  __platform_driver_register+0x28/0x3c\n |  syscon_init+0x24/0x38\n |  do_one_initcall+0xe4/0x338\n |  do_initcall_level+0xac/0x178\n |  do_initcalls+0x5c/0xa0\n |  do_basic_setup+0x20/0x30\n |  kernel_init_freeable+0x8c/0xf8\n |  kernel_init+0x28/0x1b4\n |  ret_from_fork+0x10/0x20\n | Code: f9000fbf 97fffa2f 39400268 37100048 (d42aa2a0)\n | ---[ end trace 0000000000000000 ]---\n | Kernel panic - not syncing: UBSAN: integer subtraction overflow: Fatal exception\n\nThis is due to shift_and_mask() using a signed immediate to construct\nthe mask and being called with a shift of 31 (WORK_OFFQ_POOL_SHIFT) so\nthat it ends up decrementing from INT_MIN.\n\nUse an unsigned constant '1U' to generate the mask in shift_and_mask()."
            }
        ]
    },
    "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": "1211f3b21c2a",
                                            "version_value": "90a6a844b2d9"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "6.10",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "6.10",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.10.7",
                                                        "lessThanOrEqual": "6.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.11",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/90a6a844b2d9927d192758438a4ada33d8cd9de5",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/90a6a844b2d9927d192758438a4ada33d8cd9de5"
            },
            {
                "url": "https://git.kernel.org/stable/c/38f7e14519d39cf524ddc02d4caee9b337dad703",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/38f7e14519d39cf524ddc02d4caee9b337dad703"
            }
        ]
    },
    "generator": {
        "engine": "bippy-9e1c9544281a"
    }
}