# dm-era: fix shadowed superblock leak on take-snap failure

CVE record · `CVE-2026-89576`

- **Identifiers:** `CVE-2026-89576`
- **State:** Confirmed
- **Severity:** No CVSS score
- **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, 19:44 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: `eec40579d84873dfb7021eb24c50360f073237c5 to before 54dd21ca945ecc07885012b9f3e8197f091cfba0` (git)
  - affected: `eec40579d84873dfb7021eb24c50360f073237c5 to before ef00efb6fcaee88f50891279ceced17c614e97f7` (git)
  - affected: `eec40579d84873dfb7021eb24c50360f073237c5 to before e9fa68b89214bc65af0ef963af7ec3cce9f866e0` (git)
  - affected: `eec40579d84873dfb7021eb24c50360f073237c5 to before dc731d7fddfd6149f5e88ea080475d18c36d3c64` (git)
  - affected: `eec40579d84873dfb7021eb24c50360f073237c5 to before d66ceeefb87ddb097b0546bafc581380b816b048` (git)
  - affected: `eec40579d84873dfb7021eb24c50360f073237c5 to before 36ff918637e3517f732188a3c39dbeae5b9cfb1b` (git)
  - affected: `eec40579d84873dfb7021eb24c50360f073237c5 to before 6876ca330e741fb8886d12070cb6a7f9cb67257e` (git)
  - affected: `eec40579d84873dfb7021eb24c50360f073237c5 to before 39c5aa3bd8ec3912d2cd0b3fe092642b0d2b0713` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.15`
  - unaffected: `before 3.15` (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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0022, the 12th 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-2026-89576](https://www.cve.org/CVERecord?id=CVE-2026-89576)
- [NVD: CVE-2026-89576](https://nvd.nist.gov/vuln/detail/CVE-2026-89576)

### References from the CNA

- <https://git.kernel.org/stable/c/54dd21ca945ecc07885012b9f3e8197f091cfba0>
- <https://git.kernel.org/stable/c/ef00efb6fcaee88f50891279ceced17c614e97f7>
- <https://git.kernel.org/stable/c/e9fa68b89214bc65af0ef963af7ec3cce9f866e0>
- <https://git.kernel.org/stable/c/dc731d7fddfd6149f5e88ea080475d18c36d3c64>
- <https://git.kernel.org/stable/c/d66ceeefb87ddb097b0546bafc581380b816b048>
- <https://git.kernel.org/stable/c/36ff918637e3517f732188a3c39dbeae5b9cfb1b>
- <https://git.kernel.org/stable/c/6876ca330e741fb8886d12070cb6a7f9cb67257e>
- <https://git.kernel.org/stable/c/39c5aa3bd8ec3912d2cd0b3fe092642b0d2b0713>

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-2026-89576>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89576/>. Everything for agents: <https://agentprime.io/llms.txt>.