# net/sched: account classifier filter allocations to memcg

CVE record · `CVE-2026-90099`

- **Identifiers:** `CVE-2026-90099`
- **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: `0da974f4f303a6842516b764507e3c0a03f41e5a to before 8a622d5b4d81c1572f42bbf3fb823b6e63d44dae` (git)
  - affected: `0da974f4f303a6842516b764507e3c0a03f41e5a to before 5fbb06d4f3d4c509ffe95572384a498bf319e5bf` (git)
  - affected: `0da974f4f303a6842516b764507e3c0a03f41e5a to before bf6006cea193cf065f7a64fc7974247f8112af33` (git)
  - affected: `0da974f4f303a6842516b764507e3c0a03f41e5a to before 68fb30607169c92de57c5c82b6af8a733af1cc09` (git)
  - affected: `0da974f4f303a6842516b764507e3c0a03f41e5a to before 18c68c8f3d3ff0a4def1391021b439c4333a6c71` (git)
  - affected: `0da974f4f303a6842516b764507e3c0a03f41e5a to before 1beb81947eb486716af80db7a584f9e9fef7e003` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.18`
  - unaffected: `before 2.6.18` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 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

## Machine-written summary

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

> The Linux kernel net/sched traffic classifiers do not charge filter allocations to memory cgroups. An unprivileged local user in a user and network namespace, or root with CAP_NET_ADMIN, can create many filters to pin kernel memory outside memcg limits. Upgrade to 6.1.191, 6.6.160, 6.12.114, 6.18.57 or a later release 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:** 0.0022, the 11th 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-2026-90099](https://www.cve.org/CVERecord?id=CVE-2026-90099)
- [NVD: CVE-2026-90099](https://nvd.nist.gov/vuln/detail/CVE-2026-90099)

### References from the CNA

- <https://git.kernel.org/stable/c/8a622d5b4d81c1572f42bbf3fb823b6e63d44dae>
- <https://git.kernel.org/stable/c/5fbb06d4f3d4c509ffe95572384a498bf319e5bf>
- <https://git.kernel.org/stable/c/bf6006cea193cf065f7a64fc7974247f8112af33>
- <https://git.kernel.org/stable/c/68fb30607169c92de57c5c82b6af8a733af1cc09>
- <https://git.kernel.org/stable/c/18c68c8f3d3ff0a4def1391021b439c4333a6c71>
- <https://git.kernel.org/stable/c/1beb81947eb486716af80db7a584f9e9fef7e003>

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-2026-90099>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90099/>. Everything for agents: <https://agentprime.io/llms.txt>.