wifi: p54: require a full exp_if record in PDR_INTERFACE_LIST

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: p54: require a full exp_if record in PDR_INTERFACE_LIST The PDR_INTERFACE_LIST loop only checks that the record start is within the entry before reading an entire struct exp_if from it. A truncated trailing record makes the if_id/variant reads cross the entry boundary into the heap beyond the EEPROM buffer (verified with a KASAN reproducer of the loop). The variant also feeds the synth front-end selection, so this is not only a leak. Advance only while a full record still fits in the entry.

Timeline

1. Oct 6, 2026, 8:44 AM UTCCVE published
2. Oct 19, 2026, 9:15 AM UTCRecord last updated

Affected versions

• Linux Linux

  From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in 162dbe1c285a621eab6a9f2851086b63a0378928; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in 70bf34b425fe549a4f6a8d50a319f8f05d1f91c9; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in 487f966421014de41e835bbce3feb30b35f4f729; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in bc83c04be042f53869c315b8e1eb5f124959d1d7; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in d44c1badc2dcb042985f7e37f4c448c84548b81f; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in d2fb6b588dc5bbab4f603661e41cd60f0d931628; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in d82492fd0a3fb61963c236521852763238ad3898; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in d8efd84f49379ed28624098821f80e992657d935

• Linux Linux

  2.6.24

• KernelLinux

  From 2.6.24 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.54; From 6.19.0 · fixed in 7.2.8

References 8