# ieee802154: hwsim: serialize pib updates to fix double-free

CVE record · `CVE-2026-97599`

- **Identifiers:** `CVE-2026-97599`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Sept 2026, 10:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `f25da51fdc381ca2863248c7060b3662632f0872 to before 8f44a61f816581c35c1974c8c1a3b3c2c49e96be` (git)
  - affected: `f25da51fdc381ca2863248c7060b3662632f0872 to before e3b4681197aa026bd2d79358de5a3d62b76b04b9` (git)
  - affected: `f25da51fdc381ca2863248c7060b3662632f0872 to before 9973b3a67a7592a780ea12b08334539a900deec1` (git)
  - affected: `f25da51fdc381ca2863248c7060b3662632f0872 to before d3b8f264ce09573aededd0a97dc41c8147797d8f` (git)
  - affected: `f25da51fdc381ca2863248c7060b3662632f0872 to before db6442deecb1f13aeaf4f9d77746ea7555630fb3` (git)
  - affected: `f25da51fdc381ca2863248c7060b3662632f0872 to before 979d5b8de8ed4e1f997aef12da5694b99be7b871` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.19`
  - unaffected: `before 4.19` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.7 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Linux, in the ieee802154 hwsim driver, is affected from 4.19 until fixed. A race between PIB updates on the same phy can cause a double-free, which the source says surfaces as a KASAN invalid-free; the source does not describe what access an attacker needs. Upgrade to 6.1.191, 6.6.158, 6.12.111, or 6.18.53, or later in those series.

Written 12 Nov 2026.

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0021, the 10th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 25 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-97599](https://www.cve.org/CVERecord?id=CVE-2026-97599)
- [NVD: CVE-2026-97599](https://nvd.nist.gov/vuln/detail/CVE-2026-97599)

### References from the CNA

- <https://git.kernel.org/stable/c/8f44a61f816581c35c1974c8c1a3b3c2c49e96be>
- <https://git.kernel.org/stable/c/e3b4681197aa026bd2d79358de5a3d62b76b04b9>
- <https://git.kernel.org/stable/c/9973b3a67a7592a780ea12b08334539a900deec1>
- <https://git.kernel.org/stable/c/d3b8f264ce09573aededd0a97dc41c8147797d8f>
- <https://git.kernel.org/stable/c/db6442deecb1f13aeaf4f9d77746ea7555630fb3>
- <https://git.kernel.org/stable/c/979d5b8de8ed4e1f997aef12da5694b99be7b871>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-97599>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97599/>. Everything for agents: <https://agentprime.io/llms.txt>.