# erofs: fix interlaced ztailpacking pclusters

CVE record · `CVE-2026-90161`

- **Identifiers:** `CVE-2026-90161`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **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: `fdffc091e6f94602558bba712b51bc16f79fd6d5 to before b634286a8628155557a4f473a9dbab18bb439a7b` (git)
  - affected: `fdffc091e6f94602558bba712b51bc16f79fd6d5 to before 795dca34a41545d377d19bc492b10bc789772410` (git)
  - affected: `fdffc091e6f94602558bba712b51bc16f79fd6d5 to before cd59f91cbc1e715cb5dc65773ee22123d70cb8f2` (git)
  - affected: `fdffc091e6f94602558bba712b51bc16f79fd6d5 to before ddb7ea4fd99bf6c4314d1dfca18aec6945ce8054` (git)
  - affected: `fdffc091e6f94602558bba712b51bc16f79fd6d5 to before 451027c642e752420e1a04237db9ce7b35cee595` (git)
  - affected: `fdffc091e6f94602558bba712b51bc16f79fd6d5 to before 862427ebb81d1f6abbf74d799790e1694b37b187` (git)
  - affected: `7d6ef8277e44c22f894d54d26ddb36c22d60712d` (git)
  - affected: `6.0.16 to before 6.1` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.1`
  - unaffected: `before 6.1` (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: `6.18.52 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

## 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

- 7.1 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 7th 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-2026-90161](https://www.cve.org/CVERecord?id=CVE-2026-90161)
- [NVD: CVE-2026-90161](https://nvd.nist.gov/vuln/detail/CVE-2026-90161)

### References from the CNA

- <https://git.kernel.org/stable/c/b634286a8628155557a4f473a9dbab18bb439a7b>
- <https://git.kernel.org/stable/c/795dca34a41545d377d19bc492b10bc789772410>
- <https://git.kernel.org/stable/c/cd59f91cbc1e715cb5dc65773ee22123d70cb8f2>
- <https://git.kernel.org/stable/c/ddb7ea4fd99bf6c4314d1dfca18aec6945ce8054>
- <https://git.kernel.org/stable/c/451027c642e752420e1a04237db9ce7b35cee595>
- <https://git.kernel.org/stable/c/862427ebb81d1f6abbf74d799790e1694b37b187>

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-2026-90161>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90161/>. Everything for agents: <https://agentprime.io/llms.txt>.