# RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()

CVE record · `CVE-2026-90417`

- **Identifiers:** `CVE-2026-90417`
- **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, 16:09 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: `0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 to before 26c6e9bc0b907b880c5d8486291f0452c8227fbe` (git)
  - affected: `0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 to before 68c1d2c085f205e8a5338bc3d3304f897deca4d9` (git)
  - affected: `0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 to before 379cf06e6fe34af980064c6ccaf15d8e26ec4a42` (git)
  - affected: `0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 to before 2fcd26f4680143e9ec477069530548dbe20fce6f` (git)
  - affected: `0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 to before 6b15fc9bc117fb6597fa1c2cc30284aafe71101c` (git)
  - affected: `0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 to before 373f3716a2de7adc739269ebb4d87e5bf4dc180c` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.8`
  - unaffected: `before 4.8` (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

## 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 12th 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-2026-90417](https://www.cve.org/CVERecord?id=CVE-2026-90417)
- [NVD: CVE-2026-90417](https://nvd.nist.gov/vuln/detail/CVE-2026-90417)

### References from the CNA

- <https://git.kernel.org/stable/c/26c6e9bc0b907b880c5d8486291f0452c8227fbe>
- <https://git.kernel.org/stable/c/68c1d2c085f205e8a5338bc3d3304f897deca4d9>
- <https://git.kernel.org/stable/c/379cf06e6fe34af980064c6ccaf15d8e26ec4a42>
- <https://git.kernel.org/stable/c/2fcd26f4680143e9ec477069530548dbe20fce6f>
- <https://git.kernel.org/stable/c/6b15fc9bc117fb6597fa1c2cc30284aafe71101c>
- <https://git.kernel.org/stable/c/373f3716a2de7adc739269ebb4d87e5bf4dc180c>

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-2026-90417>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90417/>. Everything for agents: <https://agentprime.io/llms.txt>.