{
  "cveId": "CVE-2026-43006",
  "url": "https://patchblox.com/security/cve/CVE-2026-43006",
  "summary": "CVE-2026-43006 is fixed in 94 products on 1 platform, first by RHSA-2026:21557, released May 6, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  io_uring/rsrc: reject zero-length fixed buffer i...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  io_uring/rsrc: reject zero-length fixed buffer import  validate_fixed_range() admits buf_addr at the exact end of the registered region when len is zero, because the check uses strict greater-than (buf_end \u003E imu-\u003Eubuf \u002B imu-\u003Elen).  io_import_fixed() then computes offset == imu-\u003Elen, which causes the bvec skip logic to advance past the last bio_vec entry and read bv_offset from out-of-bounds slab memory.  Return early from io_import_fixed() when len is zero.  A zero-length import has no data to transfer and should not walk the bvec array at all.    BUG: KASAN: slab-out-of-bounds in io_import_reg_buf\u002B0x697/0x7f0   Read of size 4 at addr ffff888002bcc254 by task poc/103   Call Trace:    io_import_reg_buf\u002B0x697/0x7f0    io_write_fixed\u002B0xd9/0x250    __io_issue_sqe\u002B0xad/0x710    io_issue_sqe\u002B0x7d/0x1100    io_submit_sqes\u002B0x86a/0x23c0    __do_sys_io_uring_enter\u002B0xa98/0x1590   Allocated by task 103:   The buggy address is located 12 bytes to the right of    allocated 584-byte region [ffff888002bcc000, ffff888002bcc248)",
  "published": "2026-05-01T00:00:00Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00124,
  "epssPercentile": 0.02133,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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}