# net: sched: fix 32-bit backlog wrap in gred, bfifo and plug enqueue

CVE record · `CVE-2026-90109`

- **Identifiers:** `CVE-2026-90109`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:06 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: `a3eb95f891d6130b1fc03dd07a8b54cf0a5c8ab8 to before 771a1123570b487765bcf2d4cff3567e66bf1322` (git)
  - affected: `a3eb95f891d6130b1fc03dd07a8b54cf0a5c8ab8 to before c5ca77024812563fe15c4f7aa906791c3683e9fd` (git)
  - affected: `a3eb95f891d6130b1fc03dd07a8b54cf0a5c8ab8 to before 3fb51b3960342bbee563543f8d33710fd0fb5a96` (git)
  - affected: `a3eb95f891d6130b1fc03dd07a8b54cf0a5c8ab8 to before 8b2d8c70b969bf84f9e248bfaf2a7135129f2eb6` (git)
  - affected: `a3eb95f891d6130b1fc03dd07a8b54cf0a5c8ab8 to before d98b92f3d57976ae185238946ec5ea0be32195aa` (git)
  - affected: `a3eb95f891d6130b1fc03dd07a8b54cf0a5c8ab8 to before 4c660ee8c809637909f4f7eb1017f7b9401c75c4` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.2`
  - unaffected: `before 4.2` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 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:** 0.0023, the 13th percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90109](https://www.cve.org/CVERecord?id=CVE-2026-90109)
- [NVD: CVE-2026-90109](https://nvd.nist.gov/vuln/detail/CVE-2026-90109)

### References from the CNA

- <https://git.kernel.org/stable/c/771a1123570b487765bcf2d4cff3567e66bf1322>
- <https://git.kernel.org/stable/c/c5ca77024812563fe15c4f7aa906791c3683e9fd>
- <https://git.kernel.org/stable/c/3fb51b3960342bbee563543f8d33710fd0fb5a96>
- <https://git.kernel.org/stable/c/8b2d8c70b969bf84f9e248bfaf2a7135129f2eb6>
- <https://git.kernel.org/stable/c/d98b92f3d57976ae185238946ec5ea0be32195aa>
- <https://git.kernel.org/stable/c/4c660ee8c809637909f4f7eb1017f7b9401c75c4>

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-2026-90109>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90109/>. Everything for agents: <https://agentprime.io/llms.txt>.