Vulnerability in Linux

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund5 Oct 2026WID-SEC-2026-3743

  Linux Kernel: Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-98221CVE-2026-98181CVE-2026-98248+204 more CVEs

[ References ]References

• git.kernel.org/stable/c/03d313e3dfb49a44c10a5c423452967694fb85e2
• git.kernel.org/stable/c/3bdcc4d61212b001b8752d80036509b4974ce16c
• git.kernel.org/stable/c/41cdf14bf4b52fbe4673a172c2a6ad756cb08111
• git.kernel.org/stable/c/42f4b03971f9d6329c4cbd1ea5155210d16ab65b
• git.kernel.org/stable/c/4d767d6f8753db22bfc14c2724bd9cee677ffb03
• git.kernel.org/stable/c/81084c967c18233b19799a0c3352ebac043f31e2
• git.kernel.org/stable/c/b0c906107150b16925ee66da09127259864c7f36
• git.kernel.org/stable/c/ce858fa6b8a214dee5adb82358885fa024cdd887