# io_uring/net: inherit IORING_CQE_F_BUF_MORE across bundle recv retries

CVE record · `CVE-2026-53191`

- **Identifiers:** `CVE-2026-53191`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-682](https://cwe.mitre.org/data/definitions/682.html)
- **Tags:** [CWE-682](https://agentprime.io/advisories/tag/cwe-682.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Jun 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Jun 2026, 08:39 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: `ae98dbf43d755b4e111fcd086e53939bef3e9a1a to before f40570fda3f3a1f96aeaa4aef665ba274b2810b5` (git)
  - affected: `ae98dbf43d755b4e111fcd086e53939bef3e9a1a to before 0bbc9481f970b0b4ddb08cfa464db1cc93b74b56` (git)
  - affected: `ae98dbf43d755b4e111fcd086e53939bef3e9a1a to before 4973232a67e4137ab9399f504f7f2bdd847f96d2` (git)
  - affected: `ae98dbf43d755b4e111fcd086e53939bef3e9a1a to before ed46f39c47eb5530a9c161481a2080d3a869cfaf` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.12`
  - unaffected: `before 6.12` (semver)
  - unaffected: `6.12.94 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.36 to 6.18.*, inclusive` (semver)
  - unaffected: `7.0.13 to 7.0.*, inclusive` (semver)
  - unaffected: `7.1 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0018, the 7th percentile, on 5 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 25 Jun 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-53191](https://www.cve.org/CVERecord?id=CVE-2026-53191)
- [NVD: CVE-2026-53191](https://nvd.nist.gov/vuln/detail/CVE-2026-53191)

### References from the CNA

- <https://git.kernel.org/stable/c/f40570fda3f3a1f96aeaa4aef665ba274b2810b5>
- <https://git.kernel.org/stable/c/0bbc9481f970b0b4ddb08cfa464db1cc93b74b56>
- <https://git.kernel.org/stable/c/4973232a67e4137ab9399f504f7f2bdd847f96d2>
- <https://git.kernel.org/stable/c/ed46f39c47eb5530a9c161481a2080d3a869cfaf>

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-2026-53191>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-53191/>. Everything for agents: <https://agentprime.io/llms.txt>.