FKIE_CVE-2022-50656

Vulnerability from fkie_nvd - Published: 2025-12-09 01:16 - Updated: 2025-12-09 18:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfc_target before being used Fix a slab-out-of-bounds read that occurs in nla_put() called from nfc_genl_send_target() when target->sensb_res_len, which is duplicated from an nfc_target in pn533, is too large as the nfc_target is not properly initialized and retains garbage values. Clear nfc_targets with memset() before they are used. Found by a modified version of syzkaller. BUG: KASAN: slab-out-of-bounds in nla_put Call Trace: memcpy nla_put nfc_genl_dump_targets genl_lock_dumpit netlink_dump __netlink_dump_start genl_family_rcv_msg_dumpit genl_rcv_msg netlink_rcv_skb genl_rcv netlink_unicast netlink_sendmsg sock_sendmsg ____sys_sendmsg ___sys_sendmsg __sys_sendmsg do_syscall_64
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/61a7e15d55fae329a245535c3bac494e401005b8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/755019e37815a66bb0a23893debbd3dd640ccbd3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8bddef54cbe9ede5ac7478f1e1e968fcfe7e6f03
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9da4a0411f3455e3885831d0758bee3e3d565bbc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f28157778ede0d4f183f7ab3b46995bb400abbe
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aea9e64dec2cc6cd742e07ecd4e6236fc76b389b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bef2f478513e7367ef3b05441f6afca981de29be
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e491285b4d08884b622638be8e4961eb43b0af64
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: pn533: Clear nfc_target before being used\n\nFix a slab-out-of-bounds read that occurs in nla_put() called from\nnfc_genl_send_target() when target-\u003esensb_res_len, which is duplicated\nfrom an nfc_target in pn533, is too large as the nfc_target is not\nproperly initialized and retains garbage values. Clear nfc_targets with\nmemset() before they are used.\n\nFound by a modified version of syzkaller.\n\nBUG: KASAN: slab-out-of-bounds in nla_put\nCall Trace:\n memcpy\n nla_put\n nfc_genl_dump_targets\n genl_lock_dumpit\n netlink_dump\n __netlink_dump_start\n genl_family_rcv_msg_dumpit\n genl_rcv_msg\n netlink_rcv_skb\n genl_rcv\n netlink_unicast\n netlink_sendmsg\n sock_sendmsg\n ____sys_sendmsg\n ___sys_sendmsg\n __sys_sendmsg\n do_syscall_64"
    }
  ],
  "id": "CVE-2022-50656",
  "lastModified": "2025-12-09T18:37:13.640",
  "metrics": {},
  "published": "2025-12-09T01:16:48.600",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/61a7e15d55fae329a245535c3bac494e401005b8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/755019e37815a66bb0a23893debbd3dd640ccbd3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8bddef54cbe9ede5ac7478f1e1e968fcfe7e6f03"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9da4a0411f3455e3885831d0758bee3e3d565bbc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9f28157778ede0d4f183f7ab3b46995bb400abbe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aea9e64dec2cc6cd742e07ecd4e6236fc76b389b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bef2f478513e7367ef3b05441f6afca981de29be"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e491285b4d08884b622638be8e4961eb43b0af64"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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