# net: bridge: remove stale rcu_barrier() in br_multicast_dev_del()

CVE record · `CVE-2026-98881`

- **Identifiers:** `CVE-2026-98881`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 23 Oct 2026
- **Updated:** 26 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 23 Oct 2026, 11:37 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: `19e3a9c90c53479fecaa02307bf2db5ab8b3ffe3 to before 35f9f11740515a10b084adfb1ce691351f2452ab` (git)
  - affected: `19e3a9c90c53479fecaa02307bf2db5ab8b3ffe3 to before 0443f6aac6bf6a91e406273fdda11497cef6ad07` (git)
  - affected: `19e3a9c90c53479fecaa02307bf2db5ab8b3ffe3 to before ac0e823a228f94ad9d7a3d876cc07e59a7afb806` (git)
  - affected: `19e3a9c90c53479fecaa02307bf2db5ab8b3ffe3 to before f0018acf0b66f93a292667c9a9c2a26c570cf270` (git)
  - affected: `19e3a9c90c53479fecaa02307bf2db5ab8b3ffe3 to before 372ee8fbe0f796031c60f676ec90f0788c26523d` (git)
  - affected: `19e3a9c90c53479fecaa02307bf2db5ab8b3ffe3 to before 39679927fa7aaf4601119f7234342d1b5d4f6f84` (git)
  - affected: `19e3a9c90c53479fecaa02307bf2db5ab8b3ffe3 to before 25ae123db10ba9ab890b56bcdb0a4363aee8529a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.0`
  - unaffected: `before 5.0` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 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 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## 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:** 0.0018, the 7th percentile, on 6 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 23 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98881](https://www.cve.org/CVERecord?id=CVE-2026-98881)
- [NVD: CVE-2026-98881](https://nvd.nist.gov/vuln/detail/CVE-2026-98881)

### References from the CNA

- <https://git.kernel.org/stable/c/35f9f11740515a10b084adfb1ce691351f2452ab>
- <https://git.kernel.org/stable/c/0443f6aac6bf6a91e406273fdda11497cef6ad07>
- <https://git.kernel.org/stable/c/ac0e823a228f94ad9d7a3d876cc07e59a7afb806>
- <https://git.kernel.org/stable/c/f0018acf0b66f93a292667c9a9c2a26c570cf270>
- <https://git.kernel.org/stable/c/372ee8fbe0f796031c60f676ec90f0788c26523d>
- <https://git.kernel.org/stable/c/39679927fa7aaf4601119f7234342d1b5d4f6f84>
- <https://git.kernel.org/stable/c/25ae123db10ba9ab890b56bcdb0a4363aee8529a>

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-2026-98881>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-98881/>. Everything for agents: <https://agentprime.io/llms.txt>.