Out-of-bounds read in Linux kernel p54 wifi calibration curves
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
The Linux kernel wifi p54 driver is affected from 2.6.24. Its calibration curve converters, p54_convert_rev0() and p54_convert_rev1(), trust the channel and points-per-channel counts in a device-supplied EEPROM entry without checking them against the entry length. An entry that declares more data than it carries makes the driver read past the EEPROM buffer, which is an out-of-bounds read.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.24 and later | 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.24 and later Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3 Patch available CNA
Remediation
Upgrade the Linux kernel to 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8 or 7.3.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-06 Threatist record created from CVE-2026-98188
- 2026-10-06 Alias added: GHSA-4pxx-93w9-mj25
- 2026-10-09 Affected versions changed · Red Hat
- 2026-10-09 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/81084c967c18233b19799a0c3352ebac043f31e2
- https://git.kernel.org/stable/c/41cdf14bf4b52fbe4673a172c2a6ad756cb08111
- https://git.kernel.org/stable/c/03d313e3dfb49a44c10a5c423452967694fb85e2
- https://git.kernel.org/stable/c/42f4b03971f9d6329c4cbd1ea5155210d16ab65b
- https://git.kernel.org/stable/c/4d767d6f8753db22bfc14c2724bd9cee677ffb03
- https://git.kernel.org/stable/c/3bdcc4d61212b001b8752d80036509b4974ce16c
- https://git.kernel.org/stable/c/b0c906107150b16925ee66da09127259864c7f36
- https://git.kernel.org/stable/c/ce858fa6b8a214dee5adb82358885fa024cdd887
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Sources
- CVE-2026-98188 · CVE Program
- CVE-2026-98188 · NVD
- FIRST EPSS
- GHSA-4pxx-93w9-mj25 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98188 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences