Loop with Unreachable Exit Condition ('Infinite Loop') Affecting kernel-devel package, versions <0:6.12.0-211.53.1.el10_2


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELDEVEL-19668489
  • published10 Sept 2026
  • disclosed24 Jun 2026

Introduced: 24 Jun 2026

CVE-2026-52933  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-devel to version 0:6.12.0-211.53.1.el10_2 or higher.
This issue was patched in ELSA-2026-64775-0.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-devel package and not the kernel-devel package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

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

io_uring/poll: fix signed comparison in io_poll_get_ownership()

io_poll_get_ownership() uses a signed comparison to check whether poll_refs has reached the threshold for the slowpath:

if (unlikely(atomic_read(&amp;req-&gt;poll_refs) &gt;= IO_POLL_REF_BIAS))

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.

Fix this by casting the atomic_read() result to unsigned int before the comparison, so that the cancel flag is treated as a large positive value and correctly triggers the slowpath.

CVSS Base Scores

version 3.1