# bpf: Fix UAF due to concurrent consumption of ttrace lists in alloc_bulk

CVE record · `CVE-2026-98642`

- **Identifiers:** `CVE-2026-98642`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:20 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: `04fabf00b4d3aff5d010ecb617001814e409e24a to before a0e150a118025a05c8662c536ba2a865da86419c` (git)
  - affected: `04fabf00b4d3aff5d010ecb617001814e409e24a to before 1d6581b544a88cf4348c2fb60dcb50ad63f012da` (git)
  - affected: `04fabf00b4d3aff5d010ecb617001814e409e24a to before f101602415fb39a58941bec444df65634d5a6844` (git)
  - affected: `04fabf00b4d3aff5d010ecb617001814e409e24a to before 1c21452d02eec2f008e2c5535820f85adbd7587a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.6`
  - unaffected: `before 6.6` (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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 6th percentile, on 7 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-2026-98642](https://www.cve.org/CVERecord?id=CVE-2026-98642)
- [NVD: CVE-2026-98642](https://nvd.nist.gov/vuln/detail/CVE-2026-98642)

### References from the CNA

- <https://git.kernel.org/stable/c/a0e150a118025a05c8662c536ba2a865da86419c>
- <https://git.kernel.org/stable/c/1d6581b544a88cf4348c2fb60dcb50ad63f012da>
- <https://git.kernel.org/stable/c/f101602415fb39a58941bec444df65634d5a6844>
- <https://git.kernel.org/stable/c/1c21452d02eec2f008e2c5535820f85adbd7587a>

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-2026-98642>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98642/>. Everything for agents: <https://agentprime.io/llms.txt>.