{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2022-48906",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: Correctly set DATA_FIN timeout when number of retransmits is large\n\nSyzkaller with UBSAN uncovered a scenario where a large number of\nDATA_FIN retransmits caused a shift-out-of-bounds in the DATA_FIN\ntimeout calculation:\n\n================================================================================\nUBSAN: shift-out-of-bounds in net/mptcp/protocol.c:470:29\nshift exponent 32 is too large for 32-bit type 'unsigned int'\nCPU: 1 PID: 13059 Comm: kworker/1:0 Not tainted 5.17.0-rc2-00630-g5fbf21c90c60 #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\nWorkqueue: events mptcp_worker\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n ubsan_epilogue+0xb/0x5a lib/ubsan.c:151\n __ubsan_handle_shift_out_of_bounds.cold+0xb2/0x20e lib/ubsan.c:330\n mptcp_set_datafin_timeout net/mptcp/protocol.c:470 [inline]\n __mptcp_retrans.cold+0x72/0x77 net/mptcp/protocol.c:2445\n mptcp_worker+0x58a/0xa70 net/mptcp/protocol.c:2528\n process_one_work+0x9df/0x16d0 kernel/workqueue.c:2307\n worker_thread+0x95/0xe10 kernel/workqueue.c:2454\n kthread+0x2f4/0x3b0 kernel/kthread.c:377\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\n </TASK>\n================================================================================\n\nThis change limits the maximum timeout by limiting the size of the\nshift, which keeps all intermediate values in-bounds."
            }
        ]
    },
    "problemtype": {
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            {
                "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": "6477dd39e62c",
                                            "version_value": "0c3f34beb459"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.13",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.13",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.27",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.16.13",
                                                        "lessThanOrEqual": "5.16.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.17",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
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                                                "defaultStatus": "affected"
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    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/0c3f34beb459753f9f80d0cc14c1b50ab615c631",
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                "url": "https://git.kernel.org/stable/c/877d11f0332cd2160e19e3313e262754c321fa36",
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