# scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails

CVE record · `CVE-2026-90267`

- **Identifiers:** `CVE-2026-90267`
- **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, 16:08 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: `81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87 to before 05bc68669549bfddfdeef2fd119855cab3e9615a` (git)
  - affected: `81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87 to before 710a2448a06a8215ba8acb4a2791954800f7db0a` (git)
  - affected: `81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87 to before 744a65e113094756e6c1cfba9ff1bf4247cb68d4` (git)
  - affected: `81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87 to before e90f746f4ca3896ca560e820b7b6b0a467026938` (git)
  - affected: `81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87 to before 5d7d1b8b525e5eff33a01d07dfcf7bdd3b6d790d` (git)
  - affected: `81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87 to before bb31844d88b77138b67aa20c3600203baff40140` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.12`
  - unaffected: `before 4.12` (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: `6.18.57 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.

> This is a Linux kernel SCSI disk (sd) driver issue, CVE-2026-90267. When scsi_alloc_sgtables() fails after a special payload page is allocated for UNMAP or WRITE SAME commands, the page is not freed, causing a memory leak. The source gives few details about how an attacker could trigger the failure. Upgrade to a fixed Linux kernel version: 6.1.191 or later in the 6.1 series, 6.6.160 or later in the 6.6 series, 6.12.114 or later in the 6.12 series, or 6.18.57 or later in the 6.18 series. No other 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:** 0.0017, the 6th 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-2026-90267](https://www.cve.org/CVERecord?id=CVE-2026-90267)
- [NVD: CVE-2026-90267](https://nvd.nist.gov/vuln/detail/CVE-2026-90267)

### References from the CNA

- <https://git.kernel.org/stable/c/05bc68669549bfddfdeef2fd119855cab3e9615a>
- <https://git.kernel.org/stable/c/710a2448a06a8215ba8acb4a2791954800f7db0a>
- <https://git.kernel.org/stable/c/744a65e113094756e6c1cfba9ff1bf4247cb68d4>
- <https://git.kernel.org/stable/c/e90f746f4ca3896ca560e820b7b6b0a467026938>
- <https://git.kernel.org/stable/c/5d7d1b8b525e5eff33a01d07dfcf7bdd3b6d790d>
- <https://git.kernel.org/stable/c/bb31844d88b77138b67aa20c3600203baff40140>

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-2026-90267>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90267/>. Everything for agents: <https://agentprime.io/llms.txt>.