# scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak

CVE record · `CVE-2026-89859`

- **Identifiers:** `CVE-2026-89859`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:31 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: `ec89146215d124c429bff84b498dccdc4919ffa7 to before eeef4fa993b3f962de9b45999f12ff25a5c79ce7` (git)
  - affected: `ec89146215d124c429bff84b498dccdc4919ffa7 to before 504b177ad58c45be7e1cfa81f9b42f7f040737c5` (git)
  - affected: `ec89146215d124c429bff84b498dccdc4919ffa7 to before c3e4c716909a053391b06a9a816c8588b652e3d2` (git)
  - affected: `ec89146215d124c429bff84b498dccdc4919ffa7 to before 2ecc30066c2284d2ed11bbd576ec97156b384054` (git)
  - affected: `ec89146215d124c429bff84b498dccdc4919ffa7 to before 5dfc77099c7d9fde9520a229794b0154d7ccccc1` (git)
  - affected: `ec89146215d124c429bff84b498dccdc4919ffa7 to before d6e2411516bb95e52cb74c9c56b60ad2548a2730` (git)
  - affected: `ec89146215d124c429bff84b498dccdc4919ffa7 to before 9fc03be982763a131913f84fe73b240ae45bca37` (git)
  - affected: `ec89146215d124c429bff84b498dccdc4919ffa7 to before a152edab3854f01dd2daf3eaf8f32cbabdb3834e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.8`
  - unaffected: `before 4.8` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 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.

> Linux kernel versions from 4.8 before the fixes listed for the scsi: qla2xxx driver are affected. The qla2xxx driver's dport diagnostics path returns uninitialized kernel heap memory to user space through the options and unused fields of its response buffer. A local user who can issue the diagnostics request can read that heap data. Upgrade to a fixed kernel release for your branch, such as 5.10.273, 5.15.224, 6.1.191, or 6.6.160 or later. The source gives few details on the exact fixed version for other branches.

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:** 0.0023, the 14th 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89859](https://www.cve.org/CVERecord?id=CVE-2026-89859)
- [NVD: CVE-2026-89859](https://nvd.nist.gov/vuln/detail/CVE-2026-89859)

### References from the CNA

- <https://git.kernel.org/stable/c/eeef4fa993b3f962de9b45999f12ff25a5c79ce7>
- <https://git.kernel.org/stable/c/504b177ad58c45be7e1cfa81f9b42f7f040737c5>
- <https://git.kernel.org/stable/c/c3e4c716909a053391b06a9a816c8588b652e3d2>
- <https://git.kernel.org/stable/c/2ecc30066c2284d2ed11bbd576ec97156b384054>
- <https://git.kernel.org/stable/c/5dfc77099c7d9fde9520a229794b0154d7ccccc1>
- <https://git.kernel.org/stable/c/d6e2411516bb95e52cb74c9c56b60ad2548a2730>
- <https://git.kernel.org/stable/c/9fc03be982763a131913f84fe73b240ae45bca37>
- <https://git.kernel.org/stable/c/a152edab3854f01dd2daf3eaf8f32cbabdb3834e>

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-2026-89859>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89859/>. Everything for agents: <https://agentprime.io/llms.txt>.