CVE-2026-98188: Linux kernel · wifi: p54: validate curve data length in the calibration curve converters
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 01:27 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.
References
- ubuntu.com/security/CVE-2026-98188 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98188 (opens in a new tab)
- git.kernel.org/linus/ce858fa6b8a214dee5adb82358885fa024cdd887 (opens in a new tab)
- git.kernel.org/stable/c/03d313e3dfb49a44c10a5c423452967694fb85e2 (opens in a new tab)
- git.kernel.org/stable/c/3bdcc4d61212b001b8752d80036509b4974ce16c (opens in a new tab)
- git.kernel.org/stable/c/41cdf14bf4b52fbe4673a172c2a6ad756cb08111 (opens in a new tab)
- git.kernel.org/stable/c/42f4b03971f9d6329c4cbd1ea5155210d16ab65b (opens in a new tab)
- git.kernel.org/stable/c/4d767d6f8753db22bfc14c2724bd9cee677ffb03 (opens in a new tab)
- git.kernel.org/stable/c/81084c967c18233b19799a0c3352ebac043f31e2 (opens in a new tab)
- git.kernel.org/stable/c/b0c906107150b16925ee66da09127259864c7f36 (opens in a new tab)
- git.kernel.org/stable/c/ce858fa6b8a214dee5adb82358885fa024cdd887 (opens in a new tab)