{"id":"CVE-2026-68287","revision":"dd3714712c294cd58e46be22cdbb53e8","records":[{"revision":"dd3714712c294cd58e46be22cdbb53e8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68287","aliases":[],"title":"drop_monitor: fix size calculations for 64-bit attributes","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrop_monitor: fix size calculations for 64-bit attributes\n\nnet_dm_packet_report_fill() and net_dm_hw_packet_report_fill() use\nnla_put_u64_64bit() to append 64-bit attributes (NET_DM_ATTR_PC and\nNET_DM_ATTR_TIMESTAMP).\n\nOn 32-bit architectures without CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS,\nnla_put_u64_64bit() may append a 4-byte NET_DM_ATTR_PAD attribute for\n64-bit alignment.\n\nHowever, net_dm_packet_report_size() and net_dm_hw_packet_report_size()\nused nla_total_size(sizeof(u64)) instead of nla_total_size_64bit(sizeof(u64)),\nbudgeting 12 bytes instead of up to 16 bytes.\n\nThis under-estimation of SKB size can lead to an skb_over_panic() when\n__nla_reserve() or skb_put() is subsequently called.\n\nFix this by using nla_total_size_64bit(sizeof(u64)) in both size calculations.","state":0,"publishedAt":"2026-08-10T12:02:20.11+00:00","modifiedAt":"2026-10-19T20:58:59.639+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\": \"ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f\",\n                            \"lessThan\": \"1275a4769c126405c6c63b6372daff120ac679a6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f\",\n                            \"lessThan\": \"0da8f531336b28a59b23e5a67d40eaed15906201\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f\",\n                            \"lessThan\": \"6048ed2dfb33426c8aef32f8d225ea91c66813db\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f\",\n                            \"lessThan\": \"925669d4cfd47a9019ab29b40676215bab5dae35\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f\",\n                            \"lessThan\": \"4a9e30764e80693bcf875c776170edce20f94fe0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f\",\n                            \"lessThan\": \"7089f7ab99c89f443c92d8fcc585e63f2727f0b3\",\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\": \"5.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.4\",\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\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/1275a4769c126405c6c63b6372daff120ac679a6","https://git.kernel.org/stable/c/0da8f531336b28a59b23e5a67d40eaed15906201","https://git.kernel.org/stable/c/6048ed2dfb33426c8aef32f8d225ea91c66813db","https://git.kernel.org/stable/c/925669d4cfd47a9019ab29b40676215bab5dae35","https://git.kernel.org/stable/c/4a9e30764e80693bcf875c776170edce20f94fe0","https://git.kernel.org/stable/c/7089f7ab99c89f443c92d8fcc585e63f2727f0b3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68287","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68287","identifiers":["CVE-2026-68287"]},"retained":false,"historicalAffected":[]}],"coverage":[]}