{"id":"CVE-2026-74712","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix buffer length in create_direct_keys()\n\nWe have seen in our CI the following KASAN message:\nBUG: KASAN: slab-out-of-bounds in cmd_exec+0x550/0xca0 [mlx5_c…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix buffer length in create_direct_keys()\n\nWe have seen in our CI the following KASAN message:\nBUG: KASAN: slab-out-of-bounds in cmd_exec+0x550/0xca0 [mlx5_c…","severity":"critical","cvss":9.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","published":"2026-08-22","updated":"2026-10-14","sourceUpdated":"2026-10-14T13:10:00.187","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74712","references":[{"url":"https://git.kernel.org/stable/c/6c8a9f7bc00301e533a5366384f3070a8e7f8430","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/727e1f569855df83579edbd73dcb4a0723543a12","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cde8931a25392670dd59a0acfcab87a830ab66c5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ec3bb289cf19d526224117d5d450a5fd9cbd5ab2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00142,"epssPercentile":0.03053,"ingestedAt":"2026-10-14T13:30:58.545Z","slug":"CVE-2026-74712","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix buffer length in create_direct_keys()\n\nWe have seen in our CI the following KASAN message:\nBUG: KASAN: slab-out-of-bounds in cmd_exec+0x550/0xca0 [mlx5_core]\nRead of size 272 at addr 0000000176795020 by task qemu-system-s39/82764\n[...]\n[<000011388ab3a7a0>] cmd_exec+0x550/0xca0 [mlx5_core]\n[<000011388ab3b61c>] mlx5_cmd_exec_cb+0x25c/0x4f0 [mlx5_core]\n[<000011388b21e82e>] mlx5_vdpa_exec_async_cmds+0x22e/0x5e0 [mlx5_vdpa]\n[<000011388b21fd44>] create_direct_keys+0x954/0xef0 [mlx5_vdpa]\n[...]\nThe buggy address is located 4128 bytes inside of\nallocated 4384-byte region [0000000176794000, 0000000176795120)\n\nSo in essence we read 16 bytes beyond 4384-byte allocation.\ncreate_direct_keys calculates the pointer and length for in and out\nbuffers.\nThe size calculation for in includes the entire structure\nsize (out + in + mtt[]) but the pointer passed to cmd_exec points only\nto the 'in' field, skipping the 'out' field.\n\nThis causes mlx5_copy_to_msg() to read beyond the allocated buffer\nby sizeof(out) bytes when copying command data.\n\nProperly calculate the input size to match the pointer and allocation size.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":51.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}