Realtek edimax 52fc10d19 In-Band Ioctl Response Length Confusion Causes Heap Buffer Overflow

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  • Original (extern): Link oeffnen
  • Veroeffentlicht: 2026-08-26 15:30 UTC
  • Importiert: 2026-08-26 18:12 UTC
  • Quelle-ID: full_disc
  • uid_hash: 9823902cd09023eff05bdf97c5847d211f1a16da829b0fae8e6794fec66c4451

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Posted by Ron E on Aug 26 The Realtek in-band ioctl bridge contains a heap-buffer overflow when

processing peer-supplied ioctl response data.

inband_ioctl() receives a response through the Realtek in-band transport

and extracts a 32-bit data_get_len value from that response. For several

wireless "get" operations, this peer-controlled value is subsequently used

directly as the length argument to memcpy().

For SIOCGIWSCAN, the destination is a caller-provided...

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