# openvswitch: only skb_tx_error() a packet we are about to drop

CVE record · `CVE-2026-89487`

- **Identifiers:** `CVE-2026-89487`
- **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:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:43 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: `36d5fe6a000790f56039afe26834265db0a3ad4c to before 5de5d554141a15b3f1f5c978fd9f7f4fd6d0600a` (git)
  - affected: `36d5fe6a000790f56039afe26834265db0a3ad4c to before 48db11e115d1b232edc5591604adc6eda95cd545` (git)
  - affected: `36d5fe6a000790f56039afe26834265db0a3ad4c to before 4477222e2916a18e273edc139c955ade6bbb7a69` (git)
  - affected: `36d5fe6a000790f56039afe26834265db0a3ad4c to before 4d5c460ef8754be1d43b16dbf02695b008b207d6` (git)
  - affected: `36d5fe6a000790f56039afe26834265db0a3ad4c to before 6767d70cf46f65807a6a4c4406a518e6c12e36ae` (git)
  - affected: `36d5fe6a000790f56039afe26834265db0a3ad4c to before e41a59fc056f63a7a1f42788913c53cc48d744aa` (git)
  - affected: `36d5fe6a000790f56039afe26834265db0a3ad4c to before 5d85eef222cfd28e73deed7402c100229e8b9e6e` (git)
  - affected: `36d5fe6a000790f56039afe26834265db0a3ad4c to before 0dbc2398fca3bb33eda963849f865ddb1b3aa05e` (git)
  - affected: `c5f0c0e7525443add533495e93ba8de6feab2396` (git)
  - affected: `1674b4bf3eea3cac51b70778e89f8025f7cfe695` (git)
  - affected: `3.10.51 to before 3.11` (semver)
  - affected: `3.12.40 to before 3.13` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.14`
  - unaffected: `before 3.14` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 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

## 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:** 0.0013, the 2nd 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-2026-89487](https://www.cve.org/CVERecord?id=CVE-2026-89487)
- [NVD: CVE-2026-89487](https://nvd.nist.gov/vuln/detail/CVE-2026-89487)

### References from the CNA

- <https://git.kernel.org/stable/c/5de5d554141a15b3f1f5c978fd9f7f4fd6d0600a>
- <https://git.kernel.org/stable/c/48db11e115d1b232edc5591604adc6eda95cd545>
- <https://git.kernel.org/stable/c/4477222e2916a18e273edc139c955ade6bbb7a69>
- <https://git.kernel.org/stable/c/4d5c460ef8754be1d43b16dbf02695b008b207d6>
- <https://git.kernel.org/stable/c/6767d70cf46f65807a6a4c4406a518e6c12e36ae>
- <https://git.kernel.org/stable/c/e41a59fc056f63a7a1f42788913c53cc48d744aa>
- <https://git.kernel.org/stable/c/5d85eef222cfd28e73deed7402c100229e8b9e6e>
- <https://git.kernel.org/stable/c/0dbc2398fca3bb33eda963849f865ddb1b3aa05e>

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-2026-89487>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-89487/>. Everything for agents: <https://agentprime.io/llms.txt>.