{
  "cveId": "CVE-2022-49393",
  "url": "https://patchblox.com/security/cve/CVE-2022-49393",
  "summary": "CVE-2022-49393 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49393, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  misc: fastrpc: fix list iterator in fastrpc_req_...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  misc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl  This is another instance of incorrect use of list iterator and checking it for NULL.  The list iterator value \u0027map\u0027 will *always* be set and non-NULL by list_for_each_entry(), so it is incorrect to assume that the iterator value will be NULL if the list is empty (in this case, the check \u0027if (!map) {\u0027 will always be false and never exit as expected).  To fix the bug, use a new variable \u0027iter\u0027 as the list iterator, while use the original variable \u0027map\u0027 as a dedicated pointer to point to the found element.  Without this patch, Kernel crashes with below trace:  Unable to handle kernel access to user memory outside uaccess routines  at virtual address 0000ffff7fb03750 ... Call trace:  fastrpc_map_create\u002B0x70/0x290 [fastrpc]  fastrpc_req_mem_map\u002B0xf0/0x2dc [fastrpc]  fastrpc_device_ioctl\u002B0x138/0xc60 [fastrpc]  __arm64_sys_ioctl\u002B0xa8/0xec  invoke_syscall\u002B0x48/0x114  el0_svc_common.constprop.0\u002B0xd4/0xfc  do_el0_svc\u002B0x28/0x90  el0_svc\u002B0x3c/0x130  el0t_64_sync_handler\u002B0xa4/0x130  el0t_64_sync\u002B0x18c/0x190 Code: 14000016 f94000a5 eb05029f 54000260 (b94018a6) ---[ end trace 0000000000000000 ]---",
  "published": "2025-02-26T07:01:15Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00234,
  "epssPercentile": 0.14431,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49393",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49393",
      "released": "2025-02-26T07:01:15Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49393",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49393",
      "released": "2025-02-26T07:01:15Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49393",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49393",
      "released": "2025-02-26T07:01:15Z"
    }
  ],
  "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"
  }
}