CVE-2026-64587

HIGHPre-NVD 7.07.0—
EchelonGraph scoreHIGH confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-08-06. a secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

A fix is available — apply it.

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

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ

Normal RX/TX interrupts are enabled later, in arc_emac_open(), so probe should not see interrupt delivery in the usual case. However, hardware may still present stale or latched interrupt status left by firmware or the bootloader.

If probe later unwinds after devm_request_irq() has installed the handler, such a stale interrupt can still reach arc_emac_intr() during teardown and race with release of the associated net_device.

Avoid that window by putting the device into a known quiescent state before requesting the IRQ: disable all EMAC interrupt sources and clear any pending EMAC interrupt status bits. This keeps the change hardware-focused and minimal, while preventing spurious IRQ delivery from leftover state.

CVSS v3
7.0
EG Score
7.0(high)
EG Risk
36(Track)
EG Risk 36/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 8, 2026

Advisory Details (8)

Auto-updated Aug 8, 2026
No patch confirmed yet.
generic

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d0f2386f529807826e7404d40a245ee428f89f62
generic

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/abd338da658d7faa8e26cfefc8f83f0066707564
generic

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8f9adb3605e36f75639de529bb3d66e94194a388
generic

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8efd5dcd31e22a9308b16b107a052fcd568c0a99
generic

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/81431da777924dddaefa5c9b0ca9da4a93f9df96
generic

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6fc7449773748c7b904235a09a67054d78ab1172
generic

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5f29dd540fe5ea3c826fc8ec759ba488b31f9707
generic

net: ethernet: arc: emac: quiesce interrupts before requesting IRQ - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2503d08f8a2de618e5c3a8183b250ff4a2e2d52c

Vendor Advisories for CVE-2026-64587(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-21ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (53 versions)5.10.257-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (120 versions)6.19.10-1—

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 27× in last 7d / 57× 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. 2026-08-21 01:15 UTCEG score recompute
  2. 2026-08-21 01:15 UTCVendor advisory
  3. 2026-08-21 01:15 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 14:19 UTCGHSA enrichment
  6. 2026-08-20 03:23 UTCEG score recompute
  7. 2026-08-20 03:23 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 16:19 UTCGHSA enrichment
  10. 2026-08-19 05:09 UTCGHSA enrichment
  11. 2026-08-18 18:12 UTCGHSA enrichment
  12. 2026-08-18 06:22 UTCGHSA enrichment
  13. 2026-08-17 19:26 UTCEG score recompute
  14. 2026-08-17 19:26 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 07:04 UTCGHSA enrichment
  17. 2026-08-16 20:09 UTCEG score recompute
  18. 2026-08-16 20:09 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 09:12 UTCEG score recompute
  21. 2026-08-16 09:12 UTCGHSA enrichment
  22. 2026-08-15 22:17 UTCGHSA enrichment
  23. 2026-08-15 11:21 UTCEG score recompute
  24. 2026-08-15 11:21 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 32 more
  1. 2026-08-15 00:24 UTCGHSA enrichment
  2. 2026-08-14 13:28 UTCGHSA enrichment
  3. 2026-08-14 02:31 UTCEG score recompute
  4. 2026-08-14 02:31 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 15:35 UTCGHSA enrichment
  7. 2026-08-13 04:37 UTCGHSA enrichment
  8. 2026-08-12 17:41 UTCEG score recompute
  9. 2026-08-12 17:41 UTCGHSA enrichment
  10. 2026-08-12 13:51 UTCEPSS rescore
  11. 2026-08-12 06:45 UTCGHSA enrichment
  12. 2026-08-11 19:49 UTCEG score recompute
  13. 2026-08-11 19:49 UTCGHSA enrichment
  14. 2026-08-11 08:53 UTCEG score recompute
  15. 2026-08-11 08:53 UTCGHSA enrichment
  16. 2026-08-11 00:00 UTCEPSS rescore
  17. 2026-08-10 21:57 UTCGHSA enrichment
  18. 2026-08-10 11:00 UTCGHSA enrichment
  19. 2026-08-10 00:04 UTCEG score recompute
  20. 2026-08-10 00:04 UTCGHSA enrichment
  21. 2026-08-09 13:47 UTCEPSS rescore
  22. 2026-08-09 13:08 UTCGHSA enrichment
  23. 2026-08-09 02:13 UTCEG score recompute
  24. 2026-08-09 02:13 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-08 15:17 UTCEG score recompute▲ 7.00
  27. 2026-08-08 15:17 UTCGHSA enrichment
  28. 2026-08-08 15:16 UTCMITRE cvelistV5CVSS v3 → 7 · severity → HIGH
  29. 2026-08-06 13:47 UTCEPSS rescore
  30. 2026-08-06 08:21 UTCNVD update
  31. 2026-08-06 07:25 UTCEG score recompute
  32. 2026-08-06 07:25 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-64587?
CVE-2026-64587 is a high vulnerability published on August 6, 2026. In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arcemacopen(), so probe should not see interrupt delivery in the usual case. However, hardware may still present stale…
When was CVE-2026-64587 disclosed?
CVE-2026-64587 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64587 actively exploited?
CVE-2026-64587 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 97.7% of all scored CVEs.
What is the CVSS score of CVE-2026-64587?
CVE-2026-64587 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-64587?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64587, 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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