CVE-2026-74290 Affecting kernel-uek-debug-modules-extra package, versions <0:6.12.0-206.104.3.3.el10uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELUEKDEBUGMODULESEXTRA-19568752
  • published5 Sept 2026
  • disclosed15 Aug 2026

Introduced: 15 Aug 2026

NewCVE-2026-74290  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-uek-debug-modules-extra to version 0:6.12.0-206.104.3.3.el10uek or higher.
This issue was patched in ELSA-2026-500248.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug-modules-extra package and not the kernel-uek-debug-modules-extra 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:

net/sched: cls_flow: Dont expose folded kernel pointers

The flow classifier falls back to addr_fold() for fields that are missing from packet headers. In map mode, userspace controls mask, xor, rshift, addend and divisor, and can observe the resulting classid through class statistics. This allows a tc classifier in a user/network namespace to recover the 32-bit folded value of skb->sk, skb_dst() or skb_nfct().

Align with standard kernel practices for pointer hashing and replace the XOR folding with a keyed siphash (which is cryptographically secure)

CVSS Base Scores

version 3.1