CVE-2026-98830 PUBLISHED

wifi: wfx: validate MIB read length before copying to caller

Assigner: Linux
Reserved: 25.09.2026 Published: 18.10.2026 Updated: 18.10.2026

In the Linux kernel, the following vulnerability has been resolved:

wifi: wfx: validate MIB read length before copying to caller

wfx_hif_read_mib() copies reply->length bytes from the firmware response into the caller-provided buffer without checking that reply->length does not exceed val_len. A firmware response with a length field larger than expected overruns the caller buffer and reads past the end of the reply allocation.

Replace the dead -ENOMEM check with an active validation that reply->length fits within val_len before the memcpy.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from f95a29d40782f4f0052a692a822de3ba044b19ff to 02886c18a340da59df57365f29009e1258bfe333 (excl.)
  • affected from f95a29d40782f4f0052a692a822de3ba044b19ff to 71d140099165de03128c00dd129f1eab21c6a3c4 (excl.)
  • affected from f95a29d40782f4f0052a692a822de3ba044b19ff to 7acb36fd60a3e7b858f12e69a919c3609b281408 (excl.)
  • affected from f95a29d40782f4f0052a692a822de3ba044b19ff to ce67ebe9d8629776ce38e6995ae72fb903c828db (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.5 is affected
  • unaffected from 0 to 5.5 (excl.)
  • unaffected from 6.12.113 to 6.12.* (incl.)
  • unaffected from 6.18.56 to 6.18.* (incl.)
  • unaffected from 7.2.10 to 7.2.* (incl.)
  • unaffected from 7.3-rc6 to * (incl.)

References