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        "cveId": "CVE-2021-47245",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-04-10T18:59:19.533Z",
        "datePublished": "2024-05-21T14:19:43.648Z",
        "dateUpdated": "2024-08-04T05:32:07.394Z"
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                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: synproxy: Fix out of bounds when parsing TCP options\n\nThe TCP option parser in synproxy (synproxy_parse_options) could read\none byte out of bounds. When the length is 1, the execution flow gets\ninto the loop, reads one byte of the opcode, and if the opcode is\nneither TCPOPT_EOL nor TCPOPT_NOP, it reads one more byte, which exceeds\nthe length of 1.\n\nThis fix is inspired by commit 9609dad263f8 (\"ipv4: tcp_input: fix stack\nout of bounds when parsing TCP options.\").\n\nv2 changes:\n\nAdded an early return when length < 0 to avoid calling\nskb_header_pointer with negative length."
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                    "programFiles": [
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                    "programFiles": [
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                    ],
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                            "version": "3.12",
                            "status": "affected"
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                        {
                            "version": "0",
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                            "status": "unaffected",
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                        {
                            "version": "4.19.196",
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                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.4.128",
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                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.10.46",
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                            "status": "unaffected",
                            "versionType": "custom"
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                        {
                            "version": "5.12.13",
                            "lessThanOrEqual": "5.12.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.13",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
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                    "url": "https://git.kernel.org/stable/c/5fc177ab759418c9537433e63301096e733fb915"
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