CVE-2026-93219

Description

In the Linux kernel, the following vulnerability has been resolved: clocksource/drivers/timer-sun4i: Advertise a real minimum delta sun4i_clkevt_next_event() compensates for the timer stop/start synchronization delay by programming evt - TIMER_SYNC_TICKS into the hardware interval register. The clockevent device currently advertises TIMER_SYNC_TICKS as min_delta_ticks, so the clockevents core is allowed to call set_next_event() with evt == TIMER_SYNC_TICKS. That programs a zero-tick interval. With oneshot/highres/nohz timer operation this can leave the next event stuck, which was observed as a boot hang on Allwinner D1 after the clockevents core started reusing forced minimum-delta events. Advertise one extra tick instead, so the smallest event accepted by the core still programs at least one hardware tick after the synchronization compensation.

Overview

State: PUBLISHED
Assigner (CNA): Linux
CVSS severity: —
CVSS score: —
CVSS vector: —
Effective score: no score available from CNA, NVD, or AI yet
CWE(s): —
Reserved: 2026-09-17
Published: 2026-09-24 15:10 UTC
Last updated: 2026-09-24 15:10 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/93xxx/CVE-2026-93219.json

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European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-85948
Assigner: Linux
Published: Sep 24, 2026, 3:10:42 PM
Updated: Sep 24, 2026, 3:10:42 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.0000
Vendors: Linux
Products: Linux (12e1480bcb4920c1b02b3793cb48756497919a60 <753a220084dfc4d737f2ab9eaddc9a01a397edd7)

Linux (12e1480bcb4920c1b02b3793cb48756497919a60 <151eb52f8712017c8f7b00bb2305e8916cb9e3dc)

Linux (patch: 0)

Linux (12e1480bcb4920c1b02b3793cb48756497919a60 <d21808328225ab8cee46885bf9a0dffcefbe630e)

Linux (patch: 7.3-rc1)

Linux (patch: 6.18.50)

Linux (3.13)

Linux (patch: 6.6.157)

Linux (patch: 6.1.188)

Linux (patch: 5.15.221)

Linux (12e1480bcb4920c1b02b3793cb48756497919a60 <bf38be01d43c4e4ca903aff7236d8486a950a252)

Linux (12e1480bcb4920c1b02b3793cb48756497919a60 <0cc4b14d7401d50e53a01f1554147ee075ee6943)

Linux (patch: 6.12.109)

Linux (patch: 5.10.270)

Linux (12e1480bcb4920c1b02b3793cb48756497919a60 <53a3bc024b8e5d284468cce84957cded5f859f98)

Linux (patch: 7.2.4)

Linux (12e1480bcb4920c1b02b3793cb48756497919a60 <ebba4d0aeba0e8eb3a9676380fc2652de8ab1c44)

Linux (12e1480bcb4920c1b02b3793cb48756497919a60 <f0efafcdf6eec1f3361bfd8c811420198f55c8bb)
Aliases: GHSA-7r67-4hf5-jfm4

ENISA description: In the Linux kernel, the following vulnerability has been resolved: clocksource/drivers/timer-sun4i: Advertise a real minimum delta sun4i_clkevt_next_event() compensates for the timer stop/start synchronization delay by programming evt - TIMER_SYNC_TICKS into the hardware interval register. The clockevent device currently advertises TIMER_SYNC_TICKS as min_delta_ticks, so the clockevents core is allowed to call set_next_event() with evt == TIMER_SYNC_TICKS. That programs a zero-tick interval. With oneshot/highres/nohz timer operation this can leave the next event stuck, which was observed as a boot hang on Allwinner D1 after the clockevents core started reusing forced minimum-delta events. Advertise one extra tick instead, so the smallest event accepted by the core still programs at least one hardware tick after the synchronization compensation.

EUVD references (8)

Affected products (2)

Vendor	Product	Versions	Platforms
Linux	Linux	`12e1480bcb4920c1b02b3793cb48756497919a60` (affected), `12e1480bcb4920c1b02b3793cb48756497919a60` (affected), `12e1480bcb4920c1b02b3793cb48756497919a60` (affected), `12e1480bcb4920c1b02b3793cb48756497919a60` (affected), `12e1480bcb4920c1b02b3793cb48756497919a60` (affected), `12e1480bcb4920c1b02b3793cb48756497919a60` (affected), `12e1480bcb4920c1b02b3793cb48756497919a60` (affected), `12e1480bcb4920c1b02b3793cb48756497919a60` (affected)	—
Linux	Linux	`3.13` (affected), `0` (unaffected), `5.10.270` (unaffected), `5.15.221` (unaffected), `6.1.188` (unaffected), `6.6.157` (unaffected), `6.12.109` (unaffected), `6.18.50` (unaffected), `7.2.4` (unaffected), `7.3-rc1` (unaffected)	—

Vendor references (8)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

Remediations (10)

Oracle Critical Patch Update Advisory - April 2026

web:blogs.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-25 10:45 UTC
September 2026 Patch Tuesday: 9 Critical CVEs — Patch Now

web:byteiota.com

Microsoft's September 2026 Patch Tuesday fixes 9 vulnerabilities — all of them Critical. On paper, that sounds manageable after August's 421- CVE pile-up. In practice, one of these nine was already being exploited in the wild before the patch shipped.

2026-09-25 10:45 UTC
Security Update Guide - Microsoft

web:msrc-ppe.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-09-25 10:45 UTC
2026 Catalog Release History - Patch My PC

web:patchmypc.com

You can find the production release history below for 2026 .

2026-09-25 10:45 UTC
Cisco Advance Notification for Publication of September 16, 2026 ...

web:sec.cloudapps.cisco.com

On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...

2026-09-25 10:45 UTC
CVE-2026-21219: Windows Inbox COM Objects RCE and Patch Guidance

web:windowsforum.com

Microsoft's security advisory listing for CVE - 2026 -21219 identifies a remote code execution risk in the Windows Inbox COM Objects (Global Memory) code paths — a family of memory-safety defects that Microsoft has acknowledged and for which vendor updates are the recommended remediation .

2026-09-25 10:45 UTC
September 2026 Patch Tuesday: CISO Executive Summary

web:www.action1.com

This CISO-focused summary highlights the vulnerabilities and critical infrastructure risks that should take priority for remediation following Microsoft's September 2026 Patch Tuesday release.

2026-09-25 10:45 UTC
Database CVE, CWE, CISA KEV & Vulnerability Intelligence | CVE Find

web:www.cvefind.com

CVE Find is a real-time vulnerability database indexing 397 484 security flaws ( CVE ) from MITRE, NVD, CISA KEV, CWE and CAPEC. 2476 new CVEs were published in the last 7 days. Data aggregated from: MITRE Corporation ( CVE , CWE, CAPEC), National Vulnerability Database - NIST (NVD), CISA Known Exploited Vulnerabilities (KEV), FIRST (EPSS).

2026-09-25 10:45 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-25 10:45 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-25 10:45 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-93219.json.

{
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            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
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            }
          ]
        }
      ],
      "cpeApplicability": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/timer-sun4i: Advertise a real minimum delta\n\nsun4i_clkevt_next_event() compensates for the timer stop/start\nsynchronization delay by programming evt - TIMER_SYNC_TICKS into the\nhardware interval register. The clockevent device currently advertises\nTIMER_SYNC_TICKS as min_delta_ticks, so the clockevents core is allowed\nto call set_next_event() with evt == TIMER_SYNC_TICKS.\n\nThat programs a zero-tick interval. With oneshot/highres/nohz timer\noperation this can leave the next event stuck, which was observed as a\nboot hang on Allwinner D1 after the clockevents core started reusing\nforced minimum-delta events.\n\nAdvertise one extra tick instead, so the smallest event accepted by the\ncore still programs at least one hardware tick after the synchronization\ncompensation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-24T15:10:42.900Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/753a220084dfc4d737f2ab9eaddc9a01a397edd7"
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        },
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        }
      ],
      "title": "clocksource/drivers/timer-sun4i: Advertise a real minimum delta",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93219",
    "datePublished": "2026-09-24T15:10:42.900Z",
    "dateReserved": "2026-09-17T16:02:15.094Z",
    "dateUpdated": "2026-09-24T15:10:42.900Z",
    "state": "PUBLISHED"
  },
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}