# dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()

CVE record · `CVE-2026-98343`

- **Identifiers:** `CVE-2026-98343`
- **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 b92c502595336a3cc5bb7a060170891366745a5d` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 855187a88bdf762c46b6849307597e3e02bfc1d9` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before c9780b601438137494b407eb4301bb3de2587ac9` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 07eb075b60d565a5e465a1945a80cc62807492ad` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 9319dd64d5cdef851841c091f30424faa2284c31` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 6cf31716b77a71c0d634106f4f3951377b8dc6dc` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before 02bd02c585293634b213b142cba63cbf77891f6b` (git)
  - affected: `8ad342a863590b24ce77681b7e081363fb3333f7 to before e873c74132f0c5f1452816cd9bb26208f0bba1e1` (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-2026-98343](https://www.cve.org/CVERecord?id=CVE-2026-98343)
- [NVD: CVE-2026-98343](https://nvd.nist.gov/vuln/detail/CVE-2026-98343)

### References from the CNA

- <https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d>
- <https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9>
- <https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9>
- <https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad>
- <https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31>
- <https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc>
- <https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b>
- <https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1>

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-2026-98343>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98343/>. Everything for agents: <https://agentprime.io/llms.txt>.