{"id":"CVE-2026-68287","title":"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 attri…","summary":"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 attri…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f < 6048ed2dfb33426c8aef32f8d225ea91c66813db","Linux >= ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f < 925669d4cfd47a9019ab29b40676215bab5dae35","Linux >= ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f < 4a9e30764e80693bcf875c776170edce20f94fe0","Linux >= ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f < 7089f7ab99c89f443c92d8fcc585e63f2727f0b3","Linux 5.4"],"published":"2026-08-10","updated":"2026-09-21","sourceUpdated":"2026-09-21T14:17:16.310","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-68287","references":[{"url":"https://git.kernel.org/stable/c/4a9e30764e80693bcf875c776170edce20f94fe0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6048ed2dfb33426c8aef32f8d225ea91c66813db","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7089f7ab99c89f443c92d8fcc585e63f2727f0b3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/925669d4cfd47a9019ab29b40676215bab5dae35","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.0063,"epssPercentile":0.47901,"ingestedAt":"2026-09-21T13:37:22.845Z","slug":"CVE-2026-68287","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}