# sched/rt: Have RT_PUSH_IPI be default off for non PREEMPT_RT

CVE record · `CVE-2026-64374`

- **Identifiers:** `CVE-2026-64374`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-835](https://cwe.mitre.org/data/definitions/835.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Jul 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Jul 2026, 08:50 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: `b6366f048e0caff28af5335b7af2031266e1b06b to before b99f04ae3d200d2f8844aa29145bd18eccbeecde` (git)
  - affected: `b6366f048e0caff28af5335b7af2031266e1b06b to before d8312a56d9a162e3ec76476aa487e7d20bc602e9` (git)
  - affected: `b6366f048e0caff28af5335b7af2031266e1b06b to before 44aae426dbfd51286f7eb601cfa14bc32164812a` (git)
  - affected: `b6366f048e0caff28af5335b7af2031266e1b06b to before 860aaff72c8446fed5e576249e19952883a18885` (git)
  - affected: `b6366f048e0caff28af5335b7af2031266e1b06b to before 89237c8fc15d8016a194076e648ccb57d75e65ae` (git)
  - affected: `b6366f048e0caff28af5335b7af2031266e1b06b to before 4bd0da48fbc1dbef6774175129107fbbdd353e26` (git)
  - affected: `b6366f048e0caff28af5335b7af2031266e1b06b to before a18f80bf5359238c4f067d691b96af00286fdd89` (git)
  - affected: `b6366f048e0caff28af5335b7af2031266e1b06b to before dd29c017aed628076e915fe4cdfb5392fd4c5cab` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.1`
  - unaffected: `before 4.1` (semver)
  - unaffected: `5.10.261 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.212 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.178 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.145 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.96 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.39 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.4 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0039, the 33rd percentile, on 14 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 Jul 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-64374](https://www.cve.org/CVERecord?id=CVE-2026-64374)
- [NVD: CVE-2026-64374](https://nvd.nist.gov/vuln/detail/CVE-2026-64374)

### References from the CNA

- <https://git.kernel.org/stable/c/b99f04ae3d200d2f8844aa29145bd18eccbeecde>
- <https://git.kernel.org/stable/c/d8312a56d9a162e3ec76476aa487e7d20bc602e9>
- <https://git.kernel.org/stable/c/44aae426dbfd51286f7eb601cfa14bc32164812a>
- <https://git.kernel.org/stable/c/860aaff72c8446fed5e576249e19952883a18885>
- <https://git.kernel.org/stable/c/89237c8fc15d8016a194076e648ccb57d75e65ae>
- <https://git.kernel.org/stable/c/4bd0da48fbc1dbef6774175129107fbbdd353e26>
- <https://git.kernel.org/stable/c/a18f80bf5359238c4f067d691b96af00286fdd89>
- <https://git.kernel.org/stable/c/dd29c017aed628076e915fe4cdfb5392fd4c5cab>

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-2026-64374>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-64374/>. Everything for agents: <https://agentprime.io/llms.txt>.