CVE-2026-74652

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-22. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ

The RS485 trigger hrtimers are embedded in the devm-managed port and can fire after it is freed. The IRQ handler can arm a timer, so free the IRQ first and then cancel both timers.

Complete the RS485 stop without arming a timer, and cancel the timers in remove() for the suspend-then-unbind path, where shutdown is not called.

This issue was found by an in-house static analysis tool.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 22, 2026

Last Modified

August 25, 2026

Advisory Details (3)

Auto-updated Aug 25, 2026
No patch confirmed yet.
generic

serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/36672c8d7d14e9c43287528455d2c97b526ea6ad
generic

serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e57f0aa5c35be37218ba0e4887b241584dd4b2d2
generic

serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/759ead98a39fb625be302f9aa66290985dcaa325

Vendor Advisories for CVE-2026-74652(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 22× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 18:55 UTCGHSA enrichment
  3. 2026-08-29 06:53 UTCEG score recompute
  4. 2026-08-29 06:53 UTCGHSA enrichment
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-28 18:51 UTCGHSA enrichment
  7. 2026-08-28 06:47 UTCGHSA enrichment
  8. 2026-08-27 18:42 UTCEG score recompute
  9. 2026-08-27 18:42 UTCGHSA enrichment
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-27 06:41 UTCGHSA enrichment
  12. 2026-08-26 18:37 UTCGHSA enrichment
  13. 2026-08-26 06:32 UTCGHSA enrichment
  14. 2026-08-25 18:31 UTCEG score recompute
  15. 2026-08-25 18:31 UTCGHSA enrichment
  16. 2026-08-25 13:49 UTCEPSS rescore
  17. 2026-08-25 06:29 UTCEG score recompute
  18. 2026-08-25 06:29 UTCGHSA enrichment
  19. 2026-08-25 05:56 UTCEG score recompute▲ 7.80
  20. 2026-08-25 05:56 UTCGHSA enrichment
  21. 2026-08-25 05:55 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  22. 2026-08-24 14:18 UTCEPSS rescore
  23. 2026-08-22 16:24 UTCNVD update
  24. 2026-08-22 15:41 UTCEG score recompute
  25. 2026-08-22 15:35 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74652?
CVE-2026-74652 is a high vulnerability published on August 22, 2026. In the Linux kernel, the following vulnerability has been resolved: serial: amba-pl011: cancel RS485 hrtimers after freeing IRQ The RS485 trigger hrtimers are embedded in the devm-managed port and can fire after it is freed. The IRQ handler can arm a timer, so free the IRQ first and then cancel…
When was CVE-2026-74652 disclosed?
CVE-2026-74652 was first published in the National Vulnerability Database on August 22, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74652 actively exploited?
CVE-2026-74652 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.3% of all scored CVEs.
What is the CVSS score of CVE-2026-74652?
CVE-2026-74652 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-74652?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74652, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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