# bpf: Free reuseport cBPF prog after RCU grace period.

CVE record · `CVE-2026-52910`

- **Identifiers:** `CVE-2026-52910`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-364](https://cwe.mitre.org/data/definitions/364.html) · [CWE-416](https://cwe.mitre.org/data/definitions/416.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md) · [CWE-364](https://agentprime.io/advisories/tag/cwe-364.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 19 Jun 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 19 Jun 2026, 14:43 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: `538950a1b7527a0a52ccd9337e3fcd304f027f13 to before 08264d5bba0bdd3a79bc2984fee09286aba0c4eb` (git)
  - affected: `538950a1b7527a0a52ccd9337e3fcd304f027f13 to before fec41484e7c2aa7ded44c541bba98872be937754` (git)
  - affected: `538950a1b7527a0a52ccd9337e3fcd304f027f13 to before c3e3fddda6b5d9ba505d218b4055e7d8a282ac57` (git)
  - affected: `538950a1b7527a0a52ccd9337e3fcd304f027f13 to before f8b8f1d4bb76098e87b8269a0631019648330e6d` (git)
  - affected: `538950a1b7527a0a52ccd9337e3fcd304f027f13 to before 298db6167f81e9c470a57cf652e4e47757b4293e` (git)
  - affected: `538950a1b7527a0a52ccd9337e3fcd304f027f13 to before 87dfb977bdb6eaa47e9993a34e18f44970f88b1f` (git)
  - affected: `538950a1b7527a0a52ccd9337e3fcd304f027f13 to before 90e47dc5c572d1c73971ac51c7428803f42b78eb` (git)
  - affected: `538950a1b7527a0a52ccd9337e3fcd304f027f13 to before 18fc650ccd7fe3376eca89203668cfb8268f60df` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.5`
  - unaffected: `before 4.5` (semver)
  - unaffected: `5.10.259 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.210 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.176 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.143 to 6.6.*, inclusive` (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) (used for this record)
- 6.4 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H`, from ADP (redhat-SADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0014, the 3rd 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 19 Jun 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-52910](https://www.cve.org/CVERecord?id=CVE-2026-52910)
- [NVD: CVE-2026-52910](https://nvd.nist.gov/vuln/detail/CVE-2026-52910)

### References from the CNA

- <https://git.kernel.org/stable/c/08264d5bba0bdd3a79bc2984fee09286aba0c4eb>
- <https://git.kernel.org/stable/c/fec41484e7c2aa7ded44c541bba98872be937754>
- <https://git.kernel.org/stable/c/c3e3fddda6b5d9ba505d218b4055e7d8a282ac57>
- <https://git.kernel.org/stable/c/f8b8f1d4bb76098e87b8269a0631019648330e6d>
- <https://git.kernel.org/stable/c/298db6167f81e9c470a57cf652e4e47757b4293e>
- <https://git.kernel.org/stable/c/87dfb977bdb6eaa47e9993a34e18f44970f88b1f>
- <https://git.kernel.org/stable/c/90e47dc5c572d1c73971ac51c7428803f42b78eb>
- <https://git.kernel.org/stable/c/18fc650ccd7fe3376eca89203668cfb8268f60df>

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-2026-52910>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-52910/>. Everything for agents: <https://agentprime.io/llms.txt>.