# dmaengine: Fix device kref underflow in dma_chan_put()

CVE record · `CVE-2026-98344`

- **Identifiers:** `CVE-2026-98344`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 6 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 6 Oct 2026, 08:46 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: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 036b527f92570206da4b8c40b38f8d689e29d0f3` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 5fb1797a8c9485e40e5492fa0338ab5c7d1f3fef` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 57f7f1c6827be7d8f80feca48d2125fb91c6f6ed` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 7c3f4ce651d43705f9ec7f778f642a90d5ff4fba` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before de2677e57d3161390d8a508f08cddec6ef7e4b23` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 1a0d9b406febf23054ad595fd47b29325e70fb2d` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 77906ac448d2fa81fa710ae26c0e591ebdc81154` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 44dab659064eb5c10adb0306510eebe848ed592d` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.6`
  - unaffected: `before 5.6` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.54 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.8 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:** 0.0018, the 7th percentile, on 10 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 6 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98344](https://www.cve.org/CVERecord?id=CVE-2026-98344)
- [NVD: CVE-2026-98344](https://nvd.nist.gov/vuln/detail/CVE-2026-98344)

### References from the CNA

- <https://git.kernel.org/stable/c/036b527f92570206da4b8c40b38f8d689e29d0f3>
- <https://git.kernel.org/stable/c/5fb1797a8c9485e40e5492fa0338ab5c7d1f3fef>
- <https://git.kernel.org/stable/c/57f7f1c6827be7d8f80feca48d2125fb91c6f6ed>
- <https://git.kernel.org/stable/c/7c3f4ce651d43705f9ec7f778f642a90d5ff4fba>
- <https://git.kernel.org/stable/c/de2677e57d3161390d8a508f08cddec6ef7e4b23>
- <https://git.kernel.org/stable/c/1a0d9b406febf23054ad595fd47b29325e70fb2d>
- <https://git.kernel.org/stable/c/77906ac448d2fa81fa710ae26c0e591ebdc81154>
- <https://git.kernel.org/stable/c/44dab659064eb5c10adb0306510eebe848ed592d>

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-2026-98344>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98344/>. Everything for agents: <https://agentprime.io/llms.txt>.