CVE-2025-40083 Affecting kernel-uek-doc package, versions <0:5.15.0-317.197.5.1.el8uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.07% (21st percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELUEKDOC-15250981
  • published9 Feb 2026
  • disclosed29 Oct 2025

Introduced: 29 Oct 2025

CVE-2025-40083  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-uek-doc to version 0:5.15.0-317.197.5.1.el8uek or higher.
This issue was patched in ELSA-2026-50113.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-doc package and not the kernel-uek-doc package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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

net/sched: sch_qfq: Fix null-deref in agg_dequeue

To prevent a potential crash in agg_dequeue (net/sched/sch_qfq.c) when cl->qdisc->ops->peek(cl->qdisc) returns NULL, we check the return value before using it, similar to the existing approach in sch_hfsc.c.

To avoid code duplication, the following changes are made:

  1. Changed qdisc_warn_nonwc(include/net/pkt_sched.h) into a static inline function.

  2. Moved qdisc_peek_len from net/sched/sch_hfsc.c to include/net/pkt_sched.h so that sch_qfq can reuse it.

  3. Applied qdisc_peek_len in agg_dequeue to avoid crashing.

CVSS Base Scores

version 3.1