# virtio_balloon: quiesce balloon work before device shutdown

CVE record · `CVE-2026-90129`

- **Identifiers:** `CVE-2026-90129`
- **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: `8bd2fa086a04886798b505f28db4002525895203 to before 6dd28e32f4d81a0d57c732b9900de24184e60a7d` (git)
  - affected: `8bd2fa086a04886798b505f28db4002525895203 to before bdef50a8226fc04899ef6815dd08a002247d47d5` (git)
  - affected: `8bd2fa086a04886798b505f28db4002525895203 to before 7e17eef04600c399c7e0f5ce765da5cf9d40d8e1` (git)
  - affected: `0c03e32494dd0bbcc301523e5ae567c2f567a7d9` (git)
  - affected: `acdfe206be6c70ec55dc8bfdb1a22036d10fae26` (git)
  - affected: `1eaa83fd94ed5e40d43139025f5acb7bcfed3b5f` (git)
  - affected: `aee42f3d57bfa37b2716df4584edeecf63b9df4c` (git)
  - affected: `6.1.191 to before 6.2` (semver)
  - affected: `6.6.160 to before 6.7` (semver)
  - affected: `6.12.114 to before 6.13` (semver)
  - affected: `6.14.9 to before 6.15` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.15`
  - unaffected: `before 6.15` (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

## Machine-written summary

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

> The Linux kernel virtio_balloon driver is affected starting with 6.15 and is fixed in 6.18.52, 7.2.6, and 7.3. On a system booted with panic_on_warn, a reboot or kexec can hit a warning during device shutdown, which panics the machine before it reaches the new kernel. Upgrade to a fixed kernel version; no workaround is listed.

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:** 0.0021, the 10th 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-2026-90129](https://www.cve.org/CVERecord?id=CVE-2026-90129)
- [NVD: CVE-2026-90129](https://nvd.nist.gov/vuln/detail/CVE-2026-90129)

### References from the CNA

- <https://git.kernel.org/stable/c/6dd28e32f4d81a0d57c732b9900de24184e60a7d>
- <https://git.kernel.org/stable/c/bdef50a8226fc04899ef6815dd08a002247d47d5>
- <https://git.kernel.org/stable/c/7e17eef04600c399c7e0f5ce765da5cf9d40d8e1>

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-2026-90129>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90129/>. Everything for agents: <https://agentprime.io/llms.txt>.
