# KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation

CVE record · `CVE-2026-53277`

- **Identifiers:** `CVE-2026-53277`
- **State:** Confirmed
- **Severity:** CVSS 8.8 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-820](https://cwe.mitre.org/data/definitions/820.html)
- **Tags:** [CWE-820](https://agentprime.io/advisories/tag/cwe-820.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Jun 2026
- **Updated:** 21 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Jun 2026, 08:40 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: `be04cebf3e78874627dc1042991d5d504464a5cc to before 0648b375aa951cc15d9e90f9ac4de71e0b51fa45` (git)
  - affected: `be04cebf3e78874627dc1042991d5d504464a5cc to before 97706097f9b851cfe55c3b00b083dfc2bcf542bc` (git)
  - affected: `be04cebf3e78874627dc1042991d5d504464a5cc to before ec42b4ed1b072ea2d03f086061aa67bad6d8de39` (git)
  - affected: `be04cebf3e78874627dc1042991d5d504464a5cc to before f2ca45b50d4216c9cc7ffabf50d9ad1932209251` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.12`
  - unaffected: `before 6.12` (semver)
  - unaffected: `6.12.114 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

- 8.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`, from CNA (Linux) (used for this record)
- 7.0 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`, from ADP (redhat-SADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0011, the 1st 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-2026-53277](https://www.cve.org/CVERecord?id=CVE-2026-53277)
- [NVD: CVE-2026-53277](https://nvd.nist.gov/vuln/detail/CVE-2026-53277)

### References from the CNA

- <https://git.kernel.org/stable/c/0648b375aa951cc15d9e90f9ac4de71e0b51fa45>
- <https://git.kernel.org/stable/c/97706097f9b851cfe55c3b00b083dfc2bcf542bc>
- <https://git.kernel.org/stable/c/ec42b4ed1b072ea2d03f086061aa67bad6d8de39>
- <https://git.kernel.org/stable/c/f2ca45b50d4216c9cc7ffabf50d9ad1932209251>

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-2026-53277>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-53277/>. Everything for agents: <https://agentprime.io/llms.txt>.