{"id":"CVE-2026-98419","revision":"d224f9082f0041289f620b84934c0823","records":[{"revision":"d224f9082f0041289f620b84934c0823","observedAt":"2026-10-24T16:17:04.479+00:00","statement":{"source":"cve-program","id":"CVE-2026-98419","aliases":[],"title":"drop_monitor: fix out-of-bounds write in reset_per_cpu_data()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrop_monitor: fix out-of-bounds write in reset_per_cpu_data()\n\nIn reset_per_cpu_data(), al is computed as:\n\n    al = sizeof(struct net_dm_alert_msg);\n    al += dm_hit_limit * sizeof(struct net_dm_drop_point);\n    al += sizeof(struct nlattr);\n\n    skb = genlmsg_new(al, GFP_KERNEL);\n    ...\n    nla = nla_reserve(skb, NLA_UNSPEC, sizeof(struct net_dm_alert_msg));\n    ...\n    msg = nla_data(nla);\n    memset(msg, 0, al);\n\nBecause al includes sizeof(struct nlattr) (the 4-byte attribute header),\ngenlmsg_new() allocates al bytes of tailroom starting at nla.\nHowever, msg points to nla_data(nla), which is located\nsizeof(struct nlattr) bytes past nla. Calling memset(msg, 0, al)\ntherefore writes al bytes starting from msg, exceeding the allocated\nbuffer by sizeof(struct nlattr) (4 bytes) and corrupting\nskb_shared_info.\n\nFix this by letting al represent only the payload length, allocating\nthe skb with genlmsg_new(nla_total_size(al), GFP_KERNEL), and zeroing\nal bytes from msg.","state":0,"publishedAt":"2026-10-14T13:27:49.005+00:00","modifiedAt":"2026-10-24T14:08:45.212+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/core/drop_monitor.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"683703a26e4677db437a1480682851e27c7a154f\",\n                            \"lessThan\": \"caf09c09e0f323015ab6777ed1bad5aa10688631\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"683703a26e4677db437a1480682851e27c7a154f\",\n                            \"lessThan\": \"56b12f0cd476e4d90a0e2663a80102b388ebf78c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"683703a26e4677db437a1480682851e27c7a154f\",\n                            \"lessThan\": \"88d640efd655b10f9fa4e381caf777da1f17c2a6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"683703a26e4677db437a1480682851e27c7a154f\",\n                            \"lessThan\": \"d54a044136b129822715e8798899af540ec7a9e9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"683703a26e4677db437a1480682851e27c7a154f\",\n                            \"lessThan\": \"8a04047c6dbff2f49a561b1ff53b043f4807e855\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"683703a26e4677db437a1480682851e27c7a154f\",\n                            \"lessThan\": \"530ae0a1458078c7a81fbffd9ff17d42129364d9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"683703a26e4677db437a1480682851e27c7a154f\",\n                            \"lessThan\": \"03b672eba4937ff18337049824a114012d57f202\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"683703a26e4677db437a1480682851e27c7a154f\",\n                            \"lessThan\": \"439f392084f8f7f59ab9d47a9579185accefe1d8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/core/drop_monitor.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.31\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.31\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/caf09c09e0f323015ab6777ed1bad5aa10688631","https://git.kernel.org/stable/c/56b12f0cd476e4d90a0e2663a80102b388ebf78c","https://git.kernel.org/stable/c/88d640efd655b10f9fa4e381caf777da1f17c2a6","https://git.kernel.org/stable/c/d54a044136b129822715e8798899af540ec7a9e9","https://git.kernel.org/stable/c/8a04047c6dbff2f49a561b1ff53b043f4807e855","https://git.kernel.org/stable/c/530ae0a1458078c7a81fbffd9ff17d42129364d9","https://git.kernel.org/stable/c/03b672eba4937ff18337049824a114012d57f202","https://git.kernel.org/stable/c/439f392084f8f7f59ab9d47a9579185accefe1d8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98419","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98419","identifiers":["CVE-2026-98419"]},"retained":false,"historicalAffected":[]}],"coverage":[]}