{
  "cveId": "CVE-2026-64550",
  "url": "https://patchblox.com/security/cve/CVE-2026-64550",
  "summary": "CVE-2026-64550 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-64550, released August 1, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: qualcomm: rmnet: validate MAP frame length...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: qualcomm: rmnet: validate MAP frame length before ingress parsing  When ingress deaggregation is disabled, rmnet_map_ingress_handler() passes the skb straight to __rmnet_map_ingress_handler(), skipping the length validation that rmnet_map_deaggregate() performs on the aggregated path. The parser then dereferences the MAP header and csum header/trailer based on the on-wire pkt_len without checking skb-\u003Elen, so a short frame is read out of bounds:    BUG: KASAN: slab-out-of-bounds in rmnet_map_checksum_downlink_packet   Read of size 1 at addr ffff88801118ed00 by task exploit/147   Call Trace:    ...    rmnet_map_checksum_downlink_packet (drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:413)    __rmnet_map_ingress_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:96)    rmnet_rx_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:129)    __netif_receive_skb_core.constprop.0 (net/core/dev.c:6089)    netif_receive_skb (net/core/dev.c:6460)    tun_get_user (drivers/net/tun.c:1955)    tun_chr_write_iter (drivers/net/tun.c:2001)    vfs_write (fs/read_write.c:688)    ksys_write (fs/read_write.c:740)    do_syscall_64 (arch/x86/entry/syscall_64.c:94)    ...  Factor that validation out of rmnet_map_deaggregate() into rmnet_map_validate_packet_len() and run it on the no-aggregation path too. The MAP header is bounds-checked first, since this path can receive a frame shorter than the header.",
  "published": "2026-07-27T21:17:07Z",
  "severity": "high",
  "cvss": 7.3,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
  "epss": 0.00126,
  "epssPercentile": 0.02283,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.180-1",
      "fix": "DEBIAN-CVE-2026-64550",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64550",
      "released": "2026-08-01T14:28:19Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.100-1",
      "fix": "DEBIAN-CVE-2026-64550",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64550",
      "released": "2026-08-01T14:28:19Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-64550",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64550",
      "released": "2026-08-01T14:28:19Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.100-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-64550",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64550",
      "released": "2026-08-01T14:28:19Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}