# md/md-llbitmap: prevent create failure bitmap UAF

CVE record · `CVE-2026-90277`

- **Identifiers:** `CVE-2026-90277`
- **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:** 19 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: `5ab829f1971dc99f2aac10846c378e67fc875abc to before 930cc4f1af5a1afcd545a6ba00e38921ff8401e0` (git)
  - affected: `5ab829f1971dc99f2aac10846c378e67fc875abc to before 2f0722435ce3a844dbb66b9bb0a18229dcc8739c` (git)
  - affected: `5ab829f1971dc99f2aac10846c378e67fc875abc to before 2116c2f0a0e547615886900e2ed8c529c016499b` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.18`
  - unaffected: `before 6.18` (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

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-2026-90277](https://www.cve.org/CVERecord?id=CVE-2026-90277)
- [NVD: CVE-2026-90277](https://nvd.nist.gov/vuln/detail/CVE-2026-90277)

### References from the CNA

- <https://git.kernel.org/stable/c/930cc4f1af5a1afcd545a6ba00e38921ff8401e0>
- <https://git.kernel.org/stable/c/2f0722435ce3a844dbb66b9bb0a18229dcc8739c>
- <https://git.kernel.org/stable/c/2116c2f0a0e547615886900e2ed8c529c016499b>

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-2026-90277>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90277/>. Everything for agents: <https://agentprime.io/llms.txt>.