# smb: client: fix create context out-of-bounds reads

CVE record · `CVE-2026-98454`

- **Identifiers:** `CVE-2026-98454`
- **State:** Confirmed
- **Severity:** CVSS 8.1 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:15 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: `b8c32dbb0deb287a5fcb78251e4eae6c7275760d to before 34245048d6c1fa6d7be4f0dec1d14b5be02360e1` (git)
  - affected: `b8c32dbb0deb287a5fcb78251e4eae6c7275760d to before 0a8c2a6715c2a67b7abbbf874fccc9f5518146d9` (git)
  - affected: `b8c32dbb0deb287a5fcb78251e4eae6c7275760d to before 43d0ca48bb902d554b6531862248810d2ae3b8ef` (git)
  - affected: `b8c32dbb0deb287a5fcb78251e4eae6c7275760d to before e4c49012708c917eafd9c27054b02d0f8b30fe64` (git)
  - affected: `b8c32dbb0deb287a5fcb78251e4eae6c7275760d to before 28bc9a871799363afa3139e961a8e3684feb8704` (git)
  - affected: `b8c32dbb0deb287a5fcb78251e4eae6c7275760d to before 05a7fd80024ff32b9b40ab1478bb172eeab1c386` (git)
  - affected: `b8c32dbb0deb287a5fcb78251e4eae6c7275760d to before cecc5399987e73a528ce2b662eeb54af69163cbd` (git)
  - affected: `b8c32dbb0deb287a5fcb78251e4eae6c7275760d to before 67f4c1c6a1b51e203d986779299824d1c2c590a6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.7`
  - unaffected: `before 3.7` (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: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.55 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.9 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0039, the 33rd percentile, on 9 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 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98454](https://www.cve.org/CVERecord?id=CVE-2026-98454)
- [NVD: CVE-2026-98454](https://nvd.nist.gov/vuln/detail/CVE-2026-98454)

### References from the CNA

- <https://git.kernel.org/stable/c/34245048d6c1fa6d7be4f0dec1d14b5be02360e1>
- <https://git.kernel.org/stable/c/0a8c2a6715c2a67b7abbbf874fccc9f5518146d9>
- <https://git.kernel.org/stable/c/43d0ca48bb902d554b6531862248810d2ae3b8ef>
- <https://git.kernel.org/stable/c/e4c49012708c917eafd9c27054b02d0f8b30fe64>
- <https://git.kernel.org/stable/c/28bc9a871799363afa3139e961a8e3684feb8704>
- <https://git.kernel.org/stable/c/05a7fd80024ff32b9b40ab1478bb172eeab1c386>
- <https://git.kernel.org/stable/c/cecc5399987e73a528ce2b662eeb54af69163cbd>
- <https://git.kernel.org/stable/c/67f4c1c6a1b51e203d986779299824d1c2c590a6>

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-2026-98454>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98454/>. Everything for agents: <https://agentprime.io/llms.txt>.