FKIE_CVE-2022-50876

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2025-12-30 13:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: musb: Fix musb_gadget.c rxstate overflow bug The usb function device call musb_gadget_queue() adds the passed request to musb_ep::req_list,If the (request->length > musb_ep->packet_sz) and (is_buffer_mapped(req) return false),the rxstate() will copy all data in fifo to request->buf which may cause request->buf out of bounds. Fix it by add the length check : fifocnt = min_t(unsigned, request->length - request->actual, fifocnt);
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c84c7f592c4ba38f54ddaddd0115acc443025db
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/523313881f0aa5cbbdb548ce575b6e58b202bd76
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7c80f3a918ba9aa26fb699ee887064ec3af0396a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/826f84ab04a5cafe484ea9c2c85a3930068e5cb7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a1008c8b9f357691ce6a8fdb8f157aecb2d79167
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/acf0006f2b2b2ca672988875fd154429aafb2a9b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d6afcab1b48f4051211c50145b9e91be3b1b42c9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: musb: Fix musb_gadget.c rxstate overflow bug\n\nThe usb function device call musb_gadget_queue() adds the passed\nrequest to musb_ep::req_list,If the (request-\u003elength \u003e musb_ep-\u003epacket_sz)\nand (is_buffer_mapped(req) return false),the rxstate() will copy all data\nin fifo to request-\u003ebuf which may cause request-\u003ebuf out of bounds.\n\nFix it by add the length check :\nfifocnt = min_t(unsigned, request-\u003elength - request-\u003eactual, fifocnt);"
    }
  ],
  "id": "CVE-2022-50876",
  "lastModified": "2025-12-30T13:16:02.610",
  "metrics": {},
  "published": "2025-12-30T13:16:02.610",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3c84c7f592c4ba38f54ddaddd0115acc443025db"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/523313881f0aa5cbbdb548ce575b6e58b202bd76"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7c80f3a918ba9aa26fb699ee887064ec3af0396a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/826f84ab04a5cafe484ea9c2c85a3930068e5cb7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a1008c8b9f357691ce6a8fdb8f157aecb2d79167"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/acf0006f2b2b2ca672988875fd154429aafb2a9b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d6afcab1b48f4051211c50145b9e91be3b1b42c9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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