fkie_cve-2022-50854
Vulnerability from fkie_nvd
Published
2025-12-30 13:16
Modified
2025-12-30 13:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: virtual_ncidev: Fix memory leak in virtual_nci_send() skb should be free in virtual_nci_send(), otherwise kmemleak will report memleak. Steps for reproduction (simulated in qemu): cd tools/testing/selftests/nci make ./nci_dev BUG: memory leak unreferenced object 0xffff888107588000 (size 208): comm "nci_dev", pid 206, jiffies 4294945376 (age 368.248s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000008d94c8fd>] __alloc_skb+0x1da/0x290 [<00000000278bc7f8>] nci_send_cmd+0xa3/0x350 [<0000000081256a22>] nci_reset_req+0x6b/0xa0 [<000000009e721112>] __nci_request+0x90/0x250 [<000000005d556e59>] nci_dev_up+0x217/0x5b0 [<00000000e618ce62>] nfc_dev_up+0x114/0x220 [<00000000981e226b>] nfc_genl_dev_up+0x94/0xe0 [<000000009bb03517>] genl_family_rcv_msg_doit.isra.14+0x228/0x2d0 [<00000000b7f8c101>] genl_rcv_msg+0x35c/0x640 [<00000000c94075ff>] netlink_rcv_skb+0x11e/0x350 [<00000000440cfb1e>] genl_rcv+0x24/0x40 [<0000000062593b40>] netlink_unicast+0x43f/0x640 [<000000001d0b13cc>] netlink_sendmsg+0x73a/0xbf0 [<000000003272487f>] __sys_sendto+0x324/0x370 [<00000000ef9f1747>] __x64_sys_sendto+0xdd/0x1b0 [<000000001e437841>] do_syscall_64+0x3f/0x90
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2c46a9a5f0b1c7341aa67667801079f3ff571678
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88e879c9f59511174ef0ab1a3c9c83e2dbf8a213
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e840d8f4a1b323973052a1af5ad4edafcde8ae3d
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: virtual_ncidev: Fix memory leak in virtual_nci_send()\n\nskb should be free in virtual_nci_send(), otherwise kmemleak will report\nmemleak.\n\nSteps for reproduction (simulated in qemu):\n\tcd tools/testing/selftests/nci\n\tmake\n\t./nci_dev\n\nBUG: memory leak\nunreferenced object 0xffff888107588000 (size 208):\n  comm \"nci_dev\", pid 206, jiffies 4294945376 (age 368.248s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c000000008d94c8fd\u003e] __alloc_skb+0x1da/0x290\n    [\u003c00000000278bc7f8\u003e] nci_send_cmd+0xa3/0x350\n    [\u003c0000000081256a22\u003e] nci_reset_req+0x6b/0xa0\n    [\u003c000000009e721112\u003e] __nci_request+0x90/0x250\n    [\u003c000000005d556e59\u003e] nci_dev_up+0x217/0x5b0\n    [\u003c00000000e618ce62\u003e] nfc_dev_up+0x114/0x220\n    [\u003c00000000981e226b\u003e] nfc_genl_dev_up+0x94/0xe0\n    [\u003c000000009bb03517\u003e] genl_family_rcv_msg_doit.isra.14+0x228/0x2d0\n    [\u003c00000000b7f8c101\u003e] genl_rcv_msg+0x35c/0x640\n    [\u003c00000000c94075ff\u003e] netlink_rcv_skb+0x11e/0x350\n    [\u003c00000000440cfb1e\u003e] genl_rcv+0x24/0x40\n    [\u003c0000000062593b40\u003e] netlink_unicast+0x43f/0x640\n    [\u003c000000001d0b13cc\u003e] netlink_sendmsg+0x73a/0xbf0\n    [\u003c000000003272487f\u003e] __sys_sendto+0x324/0x370\n    [\u003c00000000ef9f1747\u003e] __x64_sys_sendto+0xdd/0x1b0\n    [\u003c000000001e437841\u003e] do_syscall_64+0x3f/0x90"
    }
  ],
  "id": "CVE-2022-50854",
  "lastModified": "2025-12-30T13:16:00.117",
  "metrics": {},
  "published": "2025-12-30T13:16:00.117",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2c46a9a5f0b1c7341aa67667801079f3ff571678"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/88e879c9f59511174ef0ab1a3c9c83e2dbf8a213"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e840d8f4a1b323973052a1af5ad4edafcde8ae3d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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