wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication The firmware-controlled rsp->count field is used as the loop bound for indexing into the flexible rsp->regs[] array without validation against the message length. A count exceeding the actual data causes out-of- bounds reads from the heap-allocated message buffer. Add a check that count fits within the received message.

Timeline

1. Aug 15, 2026, 5:58 AM UTCCVE published
2. Oct 16, 2026, 6:53 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Oct 16, 2026, 6:55 PM UTCRecord last updated

Affected versions

• Linux Linux

  From 43efa3c0f241e04862be8e6a68ff765d36cde1ba · fixed in 22b0b8572a64362531dd0ed499b75e16282aeb2b; From 43efa3c0f241e04862be8e6a68ff765d36cde1ba · fixed in 3cf92b44c4fb88a5e8de8733a4494c0956606bca; From 43efa3c0f241e04862be8e6a68ff765d36cde1ba · fixed in 0907c06dccae9e3c8d5a68eb9014beec73a36e79; From 43efa3c0f241e04862be8e6a68ff765d36cde1ba · fixed in 64228dfc4247aca178c01e5a37af7d8dcc7a6089; From 43efa3c0f241e04862be8e6a68ff765d36cde1ba · fixed in 23d210877968657bd07e1a517e0b516db20a1d80; From 43efa3c0f241e04862be8e6a68ff765d36cde1ba · fixed in f03782f7f41f2afee5076a1ef08ced5649218771; From 43efa3c0f241e04862be8e6a68ff765d36cde1ba · fixed in f987efff29a5fe45320ea5991c9d5cb98b676953; From 43efa3c0f241e04862be8e6a68ff765d36cde1ba · fixed in df2187acfca6c6cca372c5d35f42394d9c270b09

• Linux Linux

  4.11

• KernelLinux

  From 4.11.0 · fixed in 5.10.261; From 5.11.0 · fixed in 5.15.212; From 5.16.0 · fixed in 6.1.178; From 6.2.0 · fixed in 6.6.145; From 6.7.0 · fixed in 6.12.97; From 6.13.0 · fixed in 6.18.40; From 6.19.0 · fixed in 7.1.5

References 8