Is there a patch available for EUVD-2026-115788?

Yes, a patch is available for EUVD-2026-115788. Update the affected software to the latest version immediately.

Linux EUVD-2026-115788

| CVE-2026-99263

2026-11-03 Linux

GHSA-jcvr-9jrw-gr2r

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Awaiting Data No severity or threat signals available yet. Label will update when CVSS score is published or threat intelligence arrives.

Patch available

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AnalysisCVE.org

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

io_uring/poll: avoid retry wakeup loss when dropping ownership

If a wakeup sets IO_POLL_RETRY_FLAG between the owning task consuming the existing instance of IO_POLL_RETRY_FLAG and the loop check of io_poll_check_events(), then we stall on processing the request until an unrelated wakeup comes along.

Using atomic_cmpxchg instead of atomic_sub_return to guarantee both the count v and poll_refs are 0 and no wake-ups are missed.

Affected VersionsENISA

Linux a26a35e9019fd70bf3cf647dcfdae87abc7bacea <521e8a65e9b45532295ba1082ef12be6e80c173b

Linux patch: 7.2.14

Linux a26a35e9019fd70bf3cf647dcfdae87abc7bacea <eb2a50d8235e4580fea9aa20f3fbe1a002c38cb1

Linux patch: 0

Linux patch: 6.6.161

Linux bc4e6ee16778149811333a969a7a893d4cc110c5

Linux a26a35e9019fd70bf3cf647dcfdae87abc7bacea <afa407c02f3aa0fd872f86c9bf1b34502e0fa8f0

Linux a26a35e9019fd70bf3cf647dcfdae87abc7bacea <4ef685b8505615729d75c875f52822238bf76ca6

Linux patch: 6.18.60

Linux 4b702b7d11ce1b9d26fc6d7c5a7ef4ac1d455048

Linux a26a35e9019fd70bf3cf647dcfdae87abc7bacea <41fae2e9e1fa3bee86aee0a25ba90e59ce5024bf

Linux a26a35e9019fd70bf3cf647dcfdae87abc7bacea <d1f6850086ac6f8b0fa44fb19aa2a468c73ee071

Linux patch: 7.3.1

Linux patch: 6.12.115

Linux 5.15.82 <5.16

Linux patch: 6.1.191

Linux 6.1

Linux 6.0.11 <6.1

Affected Packages

euvd linux fix: 5.16, 6.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Exploit and PoC references, threat intelligence from 22 sources

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Lifecycle Timeline

Patch available

Nov 03, 2026 - 13:16 EUVD

CVE Published

Nov 03, 2026 - 11:48 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

Data Quality

1 sources

Confidence: Low

EUVD

CVE.org

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity Not scored yet

CISA KEV No

Public POC No

EPSS N/A

Patch available Yes

Active threat No

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Awaiting Data No severity or threat signals available yet. Label will update when CVSS score is published or threat intelligence arrives.

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.