# af_packet: fix integer overflow in prb_calc_retire_blk_tmo()

CVE record · `CVE-2026-98547`

- **Identifiers:** `CVE-2026-98547`
- **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, 15:18 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: `f6fb8f100b807378fda19e83e5ac6828b638603a to before 02afd75649a4e001031ed82153a5c39312ec0737` (git)
  - affected: `f6fb8f100b807378fda19e83e5ac6828b638603a to before eb5b3838b9200dac04bfe33483db0ee8287456fb` (git)
  - affected: `f6fb8f100b807378fda19e83e5ac6828b638603a to before 297acc571d5813db76b147c745b91031d5f9c960` (git)
  - affected: `f6fb8f100b807378fda19e83e5ac6828b638603a to before be1aacff399d519cc48d6b34354a54dd79041140` (git)
  - affected: `f6fb8f100b807378fda19e83e5ac6828b638603a to before b2bcc6a254d6f27823a56787668ae4ee8cdb6e71` (git)
  - affected: `f6fb8f100b807378fda19e83e5ac6828b638603a to before 6279211e7d2456ecd195d236c9ee5e5c6fa5a17a` (git)
  - affected: `f6fb8f100b807378fda19e83e5ac6828b638603a to before 218a944b9e035d4b47d59c69af6ca13319da15fb` (git)
  - affected: `f6fb8f100b807378fda19e83e5ac6828b638603a to before 56d82862a0a243ac14ba11b6d7b57ddc2d064b95` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.2`
  - unaffected: `before 3.2` (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: `6.18.55 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:** 0.0022, the 12th 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-2026-98547](https://www.cve.org/CVERecord?id=CVE-2026-98547)
- [NVD: CVE-2026-98547](https://nvd.nist.gov/vuln/detail/CVE-2026-98547)

### References from the CNA

- <https://git.kernel.org/stable/c/02afd75649a4e001031ed82153a5c39312ec0737>
- <https://git.kernel.org/stable/c/eb5b3838b9200dac04bfe33483db0ee8287456fb>
- <https://git.kernel.org/stable/c/297acc571d5813db76b147c745b91031d5f9c960>
- <https://git.kernel.org/stable/c/be1aacff399d519cc48d6b34354a54dd79041140>
- <https://git.kernel.org/stable/c/b2bcc6a254d6f27823a56787668ae4ee8cdb6e71>
- <https://git.kernel.org/stable/c/6279211e7d2456ecd195d236c9ee5e5c6fa5a17a>
- <https://git.kernel.org/stable/c/218a944b9e035d4b47d59c69af6ca13319da15fb>
- <https://git.kernel.org/stable/c/56d82862a0a243ac14ba11b6d7b57ddc2d064b95>

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-2026-98547>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98547/>. Everything for agents: <https://agentprime.io/llms.txt>.