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Vulnerability ID

CVE-2026-52933

AI Exploitable

Integer overflow in io_uring/poll

ProductLinux kernel

CVSS 3.1High7.8

EPSS0.15%

Has public PoCNo

AI Exploitability

A working PoC was successfully generated by AI

Working AI PoC: Yes
Cheapest PoC: $30.77
Fastest PoC: 13.9 hr

Model Matrix Capability Breakdown Vulnerability Details Timeline Community

Model Matrix Capability Breakdown Vulnerability Details Timeline Community

Overview

io_uring/poll: fix signed comparison in io_poll_get_ownership() atomic_read() returns int (signed). When IO_POLL_CANCEL_FLAG (BIT(31)) is set in poll_refs, the value becomes negative in signed arithmetic, so the >= 128 comparison always evaluates to false and the slowpath is never taken.

CWE: CWE-835
Weakness: Loop with Unreachable Exit Condition ('Infinite Loop')
Component: io_uring/poll
Impact: Not stated
Published: 2026-06-24
Fixed version: 7.1

Risk factors

In-the-WildNot observed

CISA KEVNot listed

Public ExploitNone known

Ransomware useNone known

Severity

CVSS 3.1Only version published

7.8High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability

Attack VectorLocal

ComplexityLow

Privileges RequiredLow

User InteractionNone

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

EPSS

Chance of exploitation in the next 30 days

0.15%

SSVC

Stakeholder-specific vulnerability categorization

Not scored. CISA publishes an SSVC decision for a subset of CVEs.