# wifi: rtl8xxxu: fix use-after-free from rx_urb_wq on stop

CVE record · `CVE-2026-80947`

- **Identifiers:** `CVE-2026-80947`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:42 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: `26f1fad29ad973b0fb26a9ca3dcb2a73dde781aa to before 75e7e19e9218e3b895e652f04acf08113dc3aa00` (git)
  - affected: `26f1fad29ad973b0fb26a9ca3dcb2a73dde781aa to before da1678cca182567fd84618b689f4424f3f55f712` (git)
  - affected: `26f1fad29ad973b0fb26a9ca3dcb2a73dde781aa to before 06e6bbb0abc2ae22e6e4d184250075e5c9e090d6` (git)
  - affected: `26f1fad29ad973b0fb26a9ca3dcb2a73dde781aa to before 17d5ae58973122eea7625a87cd3d80a8beb23b47` (git)
  - affected: `26f1fad29ad973b0fb26a9ca3dcb2a73dde781aa to before 800d2b490a9af1e7132a3564c2ad5a81292e5b40` (git)
  - affected: `26f1fad29ad973b0fb26a9ca3dcb2a73dde781aa to before 620acb1e8037b73a457dc8ef20fc23fc7adcb405` (git)
  - affected: `26f1fad29ad973b0fb26a9ca3dcb2a73dde781aa to before 972ab8b9c08f3eb3fa535082de2950dd93604dfd` (git)
  - affected: `26f1fad29ad973b0fb26a9ca3dcb2a73dde781aa to before 6c080026ecc17eecb103f8927c64ea73a74bb818` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.4`
  - unaffected: `before 4.4` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 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.

> The rtl8xxxu Wi-Fi driver in the Linux kernel has a use-after-free, where a receive worker can run after the device has been stopped or disconnected. The source gives few details on what an attacker needs or what they could achieve. Upgrade to kernel 5.10.273, 5.15.224, 6.1.191, or 6.6.160 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

- 7.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th percentile, on 14 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80947](https://www.cve.org/CVERecord?id=CVE-2026-80947)
- [NVD: CVE-2026-80947](https://nvd.nist.gov/vuln/detail/CVE-2026-80947)

### References from the CNA

- <https://git.kernel.org/stable/c/75e7e19e9218e3b895e652f04acf08113dc3aa00>
- <https://git.kernel.org/stable/c/da1678cca182567fd84618b689f4424f3f55f712>
- <https://git.kernel.org/stable/c/06e6bbb0abc2ae22e6e4d184250075e5c9e090d6>
- <https://git.kernel.org/stable/c/17d5ae58973122eea7625a87cd3d80a8beb23b47>
- <https://git.kernel.org/stable/c/800d2b490a9af1e7132a3564c2ad5a81292e5b40>
- <https://git.kernel.org/stable/c/620acb1e8037b73a457dc8ef20fc23fc7adcb405>
- <https://git.kernel.org/stable/c/972ab8b9c08f3eb3fa535082de2950dd93604dfd>
- <https://git.kernel.org/stable/c/6c080026ecc17eecb103f8927c64ea73a74bb818>

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-2026-80947>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-80947/>. Everything for agents: <https://agentprime.io/llms.txt>.