wifi: p54: validate curve data length in the calibration curve converters

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: p54: validate curve data length in the calibration curve converters p54_convert_rev0() and p54_convert_rev1() read calibration curve data from the device-supplied EEPROM entry using channel and points-per-channel counts taken verbatim from that same entry, so an entry that declares more data than it carries drives an out-of-bounds read past the EEPROM buffer (verified with a KASAN reproducer of the conversion loop). The sibling converters p54_convert_output_limits() and p54_convert_db() already validate their counts against the entry length; this path was missed. Reject the entry when the counts do not fit in the entry data.

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 81084c967c18233b19799a0c3352ebac043f31e2; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in 41cdf14bf4b52fbe4673a172c2a6ad756cb08111; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in 03d313e3dfb49a44c10a5c423452967694fb85e2; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in 42f4b03971f9d6329c4cbd1ea5155210d16ab65b; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in 4d767d6f8753db22bfc14c2724bd9cee677ffb03; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in 3bdcc4d61212b001b8752d80036509b4974ce16c; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in b0c906107150b16925ee66da09127259864c7f36; From eff1a59c48e3c6a006eb4fe5f2e405a996f2259d · fixed in ce858fa6b8a214dee5adb82358885fa024cdd887

• 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