{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.94-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.12-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  netfs: Fix early put of sink folio in netfs_read_gaps()  Fix netfs_read_gaps() to release the sink page it uses after waiting for the request to complete.  The way the sink page is used is that an ITER_BVEC-class iterator is created that has the gaps from the target folio at either end, but has the sink page tiled over the middle so that a single read op can fill in both gaps.  The bug was found by KASAN detecting a UAF on the generic/075 xfstest in the cifsd kernel thread that handles reception of data from the TCP socket:   BUG: KASAN: use-after-free in _copy_to_iter+0x48a/0xa20  Write of size 885 at addr ffff888107f92000 by task cifsd/1285  CPU: 2 UID: 0 PID: 1285 Comm: cifsd Not tainted 7.0.0 #6 PREEMPT(lazy)  Call Trace:   dump_stack_lvl+0x5d/0x80   print_report+0x17f/0x4f1   kasan_report+0x100/0x1e0   kasan_check_range+0x10f/0x1e0   __asan_memcpy+0x3c/0x60   _copy_to_iter+0x48a/0xa20   __skb_datagram_iter+0x2c9/0x430   skb_copy_datagram_iter+0x6e/0x160   tcp_recvmsg_locked+0xce0/0x1130   tcp_recvmsg+0xeb/0x300   inet_recvmsg+0xcf/0x3a0   sock_recvmsg+0xea/0x100   cifs_readv_from_socket+0x3a6/0x4d0 [cifs]   cifs_read_iter_from_socket+0xdd/0x130 [cifs]   cifs_readv_receive+0xaad/0xb10 [cifs]   cifs_demultiplex_thread+0x1148/0x1740 [cifs]   kthread+0x1cf/0x210",
  "id": "DEBIAN-CVE-2026-64061",
  "modified": "2026-09-14T16:47:40.534763330Z",
  "published": "2026-07-19T16:17:46.613Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-64061"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-64061"
  ]
}